diff --git a/.github/workflows/aigateway-prices-refresh.yaml b/.github/workflows/aigateway-prices-refresh.yaml
new file mode 100644
index 00000000000..53e9234403d
--- /dev/null
+++ b/.github/workflows/aigateway-prices-refresh.yaml
@@ -0,0 +1,177 @@
+# Refreshes the AI Gateway price book from live upstream data (models.dev)
+# once a week and opens a pull request when the generated artifacts change.
+#
+# The price book seeds customer-visible cost numbers, so the refresh is never
+# merged automatically. The workflow only ever proposes a change; a human
+# reviews and merges it.
+#
+# Behavior:
+#   - Runs every Monday. If regeneration produces no diff, the run ends
+#     without opening anything.
+#   - Reuses a single branch and pull request, force-pushing each week, so at
+#     most one refresh PR is open and it always carries the newest snapshot.
+#   - Fails loudly when the generator refuses to run, which it does by design
+#     when upstream drops a model pinned in overrides.jq or curated in
+#     curation.json. Failures are announced in Slack.
+name: aigateway-prices-refresh
+
+on:
+  schedule:
+    # 09:00 UTC every Monday, so the PR is waiting when EU and US start the week.
+    - cron: "0 9 * * 1"
+  workflow_dispatch: # allows manual runs for testing
+  # TEMPORARY: schedule and workflow_dispatch only fire from the default
+  # branch, so this trigger is the only way to exercise the workflow before
+  # it merges. Drop this commit once the run has been verified.
+  push:
+    branches:
+      - yevhenii/aigov-578-automate-updates-to-the-shipped-ai-model-price-book
+
+permissions: {}
+
+concurrency:
+  group: aigateway-prices-refresh
+
+env:
+  REFRESH_BRANCH: bot/aigateway-prices-refresh
+  PRICES_FILE: coderd/aibridge/prices/data/prices.json
+  CATALOG_FILE: site/src/pages/AgentsPage/components/ChatModelAdminPanel/knownModels/knownModelsGenerated.json
+
+jobs:
+  refresh:
+    name: Refresh price book
+    runs-on: ubuntu-latest
+    permissions: {}
+    steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@b09bb98e06d4d774595224525879c09bc6e98c40 # v2.20.1
+        with:
+          egress-policy: audit
+
+      - name: Checkout
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          persist-credentials: false
+
+      - name: Set up mise tools
+        uses: ./.github/actions/setup-mise
+        with:
+          install-args: "go node pnpm"
+
+      # Needed by catalog generation, which formats its output with biome.
+      - name: Install pnpm dependencies
+        uses: ./.github/actions/pnpm-install
+
+      - name: Snapshot the current price book
+        run: cp "${PRICES_FILE}" "${RUNNER_TEMP}/prices-before.json"
+
+      - name: Regenerate price book and model catalog
+        run: make gen/aibridge-prices
+
+      - name: Detect changes
+        id: detect
+        run: |
+          set -euo pipefail
+          if git diff --quiet -- "${PRICES_FILE}" "${CATALOG_FILE}"; then
+            # exit 0  => NO differences => nothing to propose
+            echo "Price book already matches upstream; nothing to propose."
+            echo "changed=false" >> "$GITHUB_OUTPUT"
+          else
+            # exit 1  => differences found
+            git diff --stat -- "${PRICES_FILE}" "${CATALOG_FILE}"
+            echo "changed=true" >> "$GITHUB_OUTPUT"
+          fi
+
+      - name: Build pull request body
+        if: steps.detect.outputs.changed == 'true'
+        run: |
+          set -euo pipefail
+          go run ./scripts/aibridgepricesdiff \
+            -old "${RUNNER_TEMP}/prices-before.json" \
+            -new "${PRICES_FILE}" > "${RUNNER_TEMP}/summary.md"
+
+          {
+            cat "${RUNNER_TEMP}/summary.md"
+            echo
+            echo "## Review notes"
+            echo
+            echo "Regenerated by \`make gen/aibridge-prices\` from the live"
+            echo "[models.dev](https://models.dev) catalog. Both artifacts come from one"
+            echo "snapshot, so they ship together:"
+            echo
+            echo "- \`${PRICES_FILE}\`"
+            echo "- \`${CATALOG_FILE}\`"
+            echo
+            echo "These are customer-visible cost numbers taken from upstream data, so this"
+            echo "PR is never merged automatically. The summary above lists what moved; check"
+            echo "the diff for exact figures before approving."
+            echo
+            echo "Opened automatically by the [aigateway-prices-refresh workflow](${RUN_URL})."
+          } > "${RUNNER_TEMP}/body.md"
+
+          cat "${RUNNER_TEMP}/body.md"
+        env:
+          RUN_URL: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}
+
+      - name: Open or update the refresh pull request
+        if: steps.detect.outputs.changed == 'true'
+        env:
+          # Use cdrci's token instead of the default GITHUB_TOKEN: PRs opened
+          # with GITHUB_TOKEN do not trigger workflow runs, so the refresh
+          # would arrive without CI signal.
+          GH_TOKEN: ${{ secrets.CDRCI_GITHUB_TOKEN }}
+          PR_TITLE: "chore: refresh AI model price book"
+        run: |
+          set -euo pipefail
+
+          # persist-credentials is disabled on checkout, so authenticate the
+          # push explicitly.
+          git remote set-url origin "https://x-access-token:${GH_TOKEN}@github.com/${GITHUB_REPOSITORY}.git"
+          git config user.name "github-actions[bot]"
+          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
+
+          git checkout -b "${REFRESH_BRANCH}"
+          git add -- "${PRICES_FILE}" "${CATALOG_FILE}"
+          git commit -m "${PR_TITLE}"
+
+          # Force-push: the branch is regenerated from the newest upstream
+          # snapshot each week, so the previous contents are always stale.
+          git push --force origin "refs/heads/${REFRESH_BRANCH}"
+
+          # REST, not `gh pr`: those go through GraphQL, which needs a read:org
+          # scope that cdrci's token lacks.
+          owner="${GITHUB_REPOSITORY%%/*}"
+          pr_number="$(gh api "repos/${GITHUB_REPOSITORY}/pulls?state=open&base=main&head=${owner}:${REFRESH_BRANCH}" --jq '.[0].number // empty')"
+          if [ -n "${pr_number}" ]; then
+            gh api --method PATCH "repos/${GITHUB_REPOSITORY}/pulls/${pr_number}" \
+              -f title="${PR_TITLE}" \
+              -f body="$(cat "${RUNNER_TEMP}/body.md")" \
+              --silent
+            echo "Updated existing PR #${pr_number}."
+          else
+            gh api --method POST "repos/${GITHUB_REPOSITORY}/pulls" \
+              -f title="${PR_TITLE}" \
+              -f head="${REFRESH_BRANCH}" \
+              -f base=main \
+              -f body="$(cat "${RUNNER_TEMP}/body.md")" \
+              --jq '.html_url'
+          fi
+
+      - name: Send Slack notification on failure
+        if: failure()
+        env:
+          SLACK_WEBHOOK: ${{ secrets.AIGATEWAY_PRICES_SLACK_WEBHOOK }}
+          RUN_URL: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}
+        run: |
+          set -euo pipefail
+          if [ -z "${SLACK_WEBHOOK}" ]; then
+            echo "::error::AIGATEWAY_PRICES_SLACK_WEBHOOK is not set; the failure alert could not be sent."
+            exit 1
+          fi
+          # printf, not a double-quoted literal: bash leaves \n as two
+          # characters, and jq --arg then escapes the backslash, so Slack
+          # would print \n as text instead of breaking the line.
+          text="$(printf ':warning: *AI model price book refresh failed.*\nThe generator fails by design when upstream drops a model pinned in scripts/aibridgepricesgen/overrides.jq or curated in curation.json. Logs: %s' "${RUN_URL}")"
+          payload="$(jq -nc --arg text "${text}" '{text: $text}')"
+          curl -fsSL -X POST -H 'Content-type: application/json' -d "${payload}" "${SLACK_WEBHOOK}"
+          echo "Sent Slack notification"
diff --git a/CODEOWNERS b/CODEOWNERS
index 513013605a2..cfbfb004893 100644
--- a/CODEOWNERS
+++ b/CODEOWNERS
@@ -40,3 +40,10 @@ coderd/database/queries/ai_provider_keys.sql @ibetitsmike @johnstcn
 coderd/database/queries/aicostcontrol.sql @ibetitsmike @johnstcn
 codersdk/aiproviders.go @ibetitsmike @johnstcn
 codersdk/aiproviders_bedrock.go @ibetitsmike @johnstcn
+
+# Generated price book and frontend model catalog. The
+# aigateway-prices-refresh workflow proposes updates to both from live
+# models.dev data, and they carry customer-visible cost numbers, so every
+# refresh needs a review from someone who owns them.
+coderd/aibridge/prices/data/prices.json @evgeniy-scherbina
+site/src/pages/AgentsPage/components/ChatModelAdminPanel/knownModels/knownModelsGenerated.json @evgeniy-scherbina
diff --git a/coderd/aibridge/prices/data/prices.json b/coderd/aibridge/prices/data/prices.json
index 7570561b618..75bf170f0e9 100644
--- a/coderd/aibridge/prices/data/prices.json
+++ b/coderd/aibridge/prices/data/prices.json
@@ -31,22 +31,6 @@
     "cache_read_price": 1000000,
     "cache_write_price": 12500000
   },
-  {
-    "provider": "anthropic",
-    "model": "claude-opus-4-1",
-    "input_price": 15000000,
-    "output_price": 75000000,
-    "cache_read_price": 1500000,
-    "cache_write_price": 18750000
-  },
-  {
-    "provider": "anthropic",
-    "model": "claude-opus-4-1-20250805",
-    "input_price": 15000000,
-    "output_price": 75000000,
-    "cache_read_price": 1500000,
-    "cache_write_price": 18750000
-  },
   {
     "provider": "anthropic",
     "model": "claude-opus-4-5",
@@ -143,6 +127,14 @@
     "cache_read_price": 100000,
     "cache_write_price": 1250000
   },
+  {
+    "provider": "azure",
+    "model": "claude-mythos-5",
+    "input_price": 10000000,
+    "output_price": 50000000,
+    "cache_read_price": 1000000,
+    "cache_write_price": 12500000
+  },
   {
     "provider": "azure",
     "model": "claude-opus-4-1",
@@ -514,10 +506,10 @@
   {
     "provider": "azure",
     "model": "gpt-5.6-luna",
-    "input_price": 1000000,
-    "output_price": 6000000,
-    "cache_read_price": 100000,
-    "cache_write_price": 1250000
+    "input_price": 200000,
+    "output_price": 1200000,
+    "cache_read_price": 20000,
+    "cache_write_price": 250000
   },
   {
     "provider": "azure",
@@ -525,15 +517,15 @@
     "input_price": 5000000,
     "output_price": 30000000,
     "cache_read_price": 500000,
-    "cache_write_price": null
+    "cache_write_price": 6250000
   },
   {
     "provider": "azure",
     "model": "gpt-5.6-terra",
-    "input_price": 2500000,
-    "output_price": 15000000,
-    "cache_read_price": 250000,
-    "cache_write_price": 3125000
+    "input_price": 2000000,
+    "output_price": 12000000,
+    "cache_read_price": 200000,
+    "cache_write_price": 2500000
   },
   {
     "provider": "azure",
@@ -615,6 +607,14 @@
     "cache_read_price": null,
     "cache_write_price": null
   },
+  {
+    "provider": "azure",
+    "model": "kimi-k2.7-code",
+    "input_price": 950000,
+    "output_price": 4000000,
+    "cache_read_price": 190000,
+    "cache_write_price": null
+  },
   {
     "provider": "azure",
     "model": "llama-3.3-70b-instruct",
@@ -1135,6 +1135,30 @@
     "cache_read_price": 200000,
     "cache_write_price": 2500000
   },
+  {
+    "provider": "bedrock",
+    "model": "global.openai.gpt-5.6-luna",
+    "input_price": 220000,
+    "output_price": 1320000,
+    "cache_read_price": 22000,
+    "cache_write_price": 275000
+  },
+  {
+    "provider": "bedrock",
+    "model": "global.openai.gpt-5.6-sol",
+    "input_price": 5500000,
+    "output_price": 33000000,
+    "cache_read_price": 550000,
+    "cache_write_price": 6875000
+  },
+  {
+    "provider": "bedrock",
+    "model": "global.openai.gpt-5.6-terra",
+    "input_price": 2200000,
+    "output_price": 13200000,
+    "cache_read_price": 220000,
+    "cache_write_price": 2750000
+  },
   {
     "provider": "bedrock",
     "model": "google.gemma-3-12b-it",
@@ -1429,7 +1453,7 @@
     "input_price": 5500000,
     "output_price": 33000000,
     "cache_read_price": 550000,
-    "cache_write_price": 6880000
+    "cache_write_price": 6875000
   },
   {
     "provider": "bedrock",
@@ -1815,6 +1839,14 @@
     "cache_read_price": 150000,
     "cache_write_price": null
   },
+  {
+    "provider": "copilot",
+    "model": "gemini-3.7-flash",
+    "input_price": 750000,
+    "output_price": 3750000,
+    "cache_read_price": 75000,
+    "cache_write_price": null
+  },
   {
     "provider": "copilot",
     "model": "gpt-4.1",
@@ -1919,6 +1951,14 @@
     "cache_read_price": 500000,
     "cache_write_price": null
   },
+  {
+    "provider": "copilot",
+    "model": "grok-4.6",
+    "input_price": 2000000,
+    "output_price": 6000000,
+    "cache_read_price": 500000,
+    "cache_write_price": null
+  },
   {
     "provider": "copilot",
     "model": "kimi-k2.7-code",
@@ -1927,6 +1967,14 @@
     "cache_read_price": 190000,
     "cache_write_price": null
   },
+  {
+    "provider": "copilot",
+    "model": "kimi-k3",
+    "input_price": 3000000,
+    "output_price": 15000000,
+    "cache_read_price": 300000,
+    "cache_write_price": null
+  },
   {
     "provider": "copilot",
     "model": "mai-code-1-flash-picker",
@@ -1935,6 +1983,14 @@
     "cache_read_price": 75000,
     "cache_write_price": null
   },
+  {
+    "provider": "copilot",
+    "model": "mai-code-1.1-flash",
+    "input_price": 200000,
+    "output_price": 1200000,
+    "cache_read_price": 20000,
+    "cache_write_price": null
+  },
   {
     "provider": "google",
     "model": "deep-research-max-preview-04-2026",
@@ -1951,22 +2007,6 @@
     "cache_read_price": 200000,
     "cache_write_price": null
   },
-  {
-    "provider": "google",
-    "model": "gemini-2.0-flash",
-    "input_price": 100000,
-    "output_price": 400000,
-    "cache_read_price": 25000,
-    "cache_write_price": null
-  },
-  {
-    "provider": "google",
-    "model": "gemini-2.0-flash-lite",
-    "input_price": 75000,
-    "output_price": 300000,
-    "cache_read_price": null,
-    "cache_write_price": null
-  },
   {
     "provider": "google",
     "model": "gemini-2.5-computer-use-preview-10-2025",
@@ -2047,14 +2087,6 @@
     "cache_read_price": null,
     "cache_write_price": null
   },
-  {
-    "provider": "google",
-    "model": "gemini-3-pro-preview",
-    "input_price": 2000000,
-    "output_price": 12000000,
-    "cache_read_price": 200000,
-    "cache_write_price": null
-  },
   {
     "provider": "google",
     "model": "gemini-3.1-flash-image",
@@ -2159,6 +2191,14 @@
     "cache_read_price": 150000,
     "cache_write_price": null
   },
+  {
+    "provider": "google",
+    "model": "gemini-3.7-flash",
+    "input_price": 750000,
+    "output_price": 3750000,
+    "cache_read_price": 75000,
+    "cache_write_price": null
+  },
   {
     "provider": "google",
     "model": "gemini-embedding-001",
@@ -2839,6 +2879,22 @@
     "cache_read_price": null,
     "cache_write_price": null
   },
+  {
+    "provider": "openrouter",
+    "model": "bytedance-seed/seed-2-1-turbo",
+    "input_price": 500000,
+    "output_price": 2500000,
+    "cache_read_price": null,
+    "cache_write_price": null
+  },
+  {
+    "provider": "openrouter",
+    "model": "bytedance-seed/seed-2.0-code",
+    "input_price": 500000,
+    "output_price": 3000000,
+    "cache_read_price": null,
+    "cache_write_price": null
+  },
   {
     "provider": "openrouter",
     "model": "bytedance-seed/seed-2.0-lite",
@@ -2972,7 +3028,7 @@
     "model": "deepseek/deepseek-v3.1-terminus",
     "input_price": 270000,
     "output_price": 1000000,
-    "cache_read_price": 135000,
+    "cache_read_price": null,
     "cache_write_price": null
   },
   {
@@ -2994,6 +3050,14 @@
   {
     "provider": "openrouter",
     "model": "deepseek/deepseek-v4-flash",
+    "input_price": 79800,
+    "output_price": 159600,
+    "cache_read_price": 15960,
+    "cache_write_price": null
+  },
+  {
+    "provider": "openrouter",
+    "model": "deepseek/deepseek-v4-flash-0731",
     "input_price": 140000,
     "output_price": 280000,
     "cache_read_price": 28000,
@@ -3001,18 +3065,26 @@
   },
   {
     "provider": "openrouter",
-    "model": "deepseek/deepseek-v4-flash-0731",
-    "input_price": 90000,
-    "output_price": 180000,
-    "cache_read_price": 18000,
+    "model": "deepseek/deepseek-v4-pro",
+    "input_price": 660000,
+    "output_price": 1980000,
+    "cache_read_price": 22000,
     "cache_write_price": null
   },
   {
     "provider": "openrouter",
-    "model": "deepseek/deepseek-v4-pro",
-    "input_price": 435000,
-    "output_price": 870000,
-    "cache_read_price": 3625,
+    "model": "deepseek/deepseek-v4-pro-0813",
+    "input_price": 660000,
+    "output_price": 1980000,
+    "cache_read_price": 22000,
+    "cache_write_price": null
+  },
+  {
+    "provider": "openrouter",
+    "model": "dots-studio/dots-3-note-preview:free",
+    "input_price": 0,
+    "output_price": 0,
+    "cache_read_price": null,
     "cache_write_price": null
   },
   {
@@ -3162,10 +3234,18 @@
   {
     "provider": "openrouter",
     "model": "google/gemini-3.6-flash",
-    "input_price": 1500000,
-    "output_price": 7500000,
-    "cache_read_price": 150000,
-    "cache_write_price": 83333
+    "input_price": 750000,
+    "output_price": 3750000,
+    "cache_read_price": 75000,
+    "cache_write_price": 41667
+  },
+  {
+    "provider": "openrouter",
+    "model": "google/gemini-3.7-flash",
+    "input_price": 375000,
+    "output_price": 1875000,
+    "cache_read_price": 37500,
+    "cache_write_price": 20833
   },
   {
     "provider": "openrouter",
@@ -3258,8 +3338,8 @@
   {
     "provider": "openrouter",
     "model": "gryphe/mythomax-l2-13b",
-    "input_price": 80000,
-    "output_price": 110000,
+    "input_price": 60000,
+    "output_price": 60000,
     "cache_read_price": null,
     "cache_write_price": null
   },
@@ -3305,10 +3385,10 @@
   },
   {
     "provider": "openrouter",
-    "model": "inclusionai/ling-3.0-flash:free",
-    "input_price": 0,
-    "output_price": 0,
-    "cache_read_price": null,
+    "model": "inclusionai/ling-3.0-flash",
+    "input_price": 21000,
+    "output_price": 63000,
+    "cache_read_price": 4200,
     "cache_write_price": null
   },
   {
@@ -3343,6 +3423,14 @@
     "cache_read_price": 150000,
     "cache_write_price": null
   },
+  {
+    "provider": "openrouter",
+    "model": "liquid/lfm-2.5-2.6b:free",
+    "input_price": 0,
+    "output_price": 0,
+    "cache_read_price": null,
+    "cache_write_price": null
+  },
   {
     "provider": "openrouter",
     "model": "mancer/weaver",
@@ -3423,6 +3511,14 @@
     "cache_read_price": null,
     "cache_write_price": null
   },
+  {
+    "provider": "openrouter",
+    "model": "meta/muse-glimmer-30b",
+    "input_price": 350000,
+    "output_price": 1500000,
+    "cache_read_price": 40000,
+    "cache_write_price": null
+  },
   {
     "provider": "openrouter",
     "model": "meta/muse-spark-1.1",
@@ -3431,6 +3527,14 @@
     "cache_read_price": 150000,
     "cache_write_price": null
   },
+  {
+    "provider": "openrouter",
+    "model": "meta/muse-spark-1.2",
+    "input_price": 1250000,
+    "output_price": 4250000,
+    "cache_read_price": 150000,
+    "cache_write_price": null
+  },
   {
     "provider": "openrouter",
     "model": "microsoft/phi-4",
@@ -3490,7 +3594,7 @@
   {
     "provider": "openrouter",
     "model": "minimax/minimax-m2.5",
-    "input_price": 150000,
+    "input_price": 220000,
     "output_price": 900000,
     "cache_read_price": 50000,
     "cache_write_price": null
@@ -3498,9 +3602,9 @@
   {
     "provider": "openrouter",
     "model": "minimax/minimax-m2.7",
-    "input_price": 250000,
-    "output_price": 1000000,
-    "cache_read_price": 50000,
+    "input_price": 300000,
+    "output_price": 1200000,
+    "cache_read_price": 60000,
     "cache_write_price": null
   },
   {
@@ -3634,8 +3738,8 @@
   {
     "provider": "openrouter",
     "model": "mistralai/mistral-small-3.2-24b-instruct",
-    "input_price": 75000,
-    "output_price": 200000,
+    "input_price": 93750,
+    "output_price": 250000,
     "cache_read_price": null,
     "cache_write_price": null
   },
@@ -3690,15 +3794,15 @@
   {
     "provider": "openrouter",
     "model": "moonshotai/kimi-k2.6",
-    "input_price": 589000,
-    "output_price": 2480000,
-    "cache_read_price": 99200,
+    "input_price": 560500,
+    "output_price": 2360000,
+    "cache_read_price": 94400,
     "cache_write_price": null
   },
   {
     "provider": "openrouter",
     "model": "moonshotai/kimi-k2.7-code",
-    "input_price": 730000,
+    "input_price": 710000,
     "output_price": 3500000,
     "cache_read_price": 150000,
     "cache_write_price": null
@@ -3839,6 +3943,22 @@
     "cache_read_price": null,
     "cache_write_price": null
   },
+  {
+    "provider": "openrouter",
+    "model": "nvidia/nemotron-3.5-lightning",
+    "input_price": 80000,
+    "output_price": 200000,
+    "cache_read_price": 40000,
+    "cache_write_price": null
+  },
+  {
+    "provider": "openrouter",
+    "model": "nvidia/nemotron-3.5-lightning:free",
+    "input_price": 0,
+    "output_price": 0,
+    "cache_read_price": null,
+    "cache_write_price": null
+  },
   {
     "provider": "openrouter",
     "model": "nvidia/nemotron-nano-12b-v2-vl:free",
@@ -4095,14 +4215,6 @@
     "cache_read_price": null,
     "cache_write_price": null
   },
-  {
-    "provider": "openrouter",
-    "model": "openai/gpt-5.3-chat",
-    "input_price": 1750000,
-    "output_price": 14000000,
-    "cache_read_price": 175000,
-    "cache_write_price": null
-  },
   {
     "provider": "openrouter",
     "model": "openai/gpt-5.3-codex",
@@ -4170,50 +4282,50 @@
   {
     "provider": "openrouter",
     "model": "openai/gpt-5.6-luna",
-    "input_price": 100000,
-    "output_price": 600000,
-    "cache_read_price": 10000,
-    "cache_write_price": 125000
+    "input_price": 200000,
+    "output_price": 1200000,
+    "cache_read_price": 20000,
+    "cache_write_price": 250000
   },
   {
     "provider": "openrouter",
     "model": "openai/gpt-5.6-luna-pro",
-    "input_price": 100000,
-    "output_price": 600000,
-    "cache_read_price": 10000,
-    "cache_write_price": 125000
+    "input_price": 200000,
+    "output_price": 1200000,
+    "cache_read_price": 20000,
+    "cache_write_price": 250000
   },
   {
     "provider": "openrouter",
     "model": "openai/gpt-5.6-sol",
-    "input_price": 5000000,
-    "output_price": 30000000,
-    "cache_read_price": 500000,
-    "cache_write_price": 6250000
+    "input_price": 2500000,
+    "output_price": 15000000,
+    "cache_read_price": 250000,
+    "cache_write_price": 3125000
   },
   {
     "provider": "openrouter",
     "model": "openai/gpt-5.6-sol-pro",
-    "input_price": 5000000,
-    "output_price": 30000000,
-    "cache_read_price": 500000,
-    "cache_write_price": 6250000
+    "input_price": 2500000,
+    "output_price": 15000000,
+    "cache_read_price": 250000,
+    "cache_write_price": 3125000
   },
   {
     "provider": "openrouter",
     "model": "openai/gpt-5.6-terra",
-    "input_price": 1000000,
-    "output_price": 6000000,
-    "cache_read_price": 100000,
-    "cache_write_price": 1250000
+    "input_price": 2000000,
+    "output_price": 12000000,
+    "cache_read_price": 200000,
+    "cache_write_price": 2500000
   },
   {
     "provider": "openrouter",
     "model": "openai/gpt-5.6-terra-pro",
-    "input_price": 1000000,
-    "output_price": 6000000,
-    "cache_read_price": 100000,
-    "cache_write_price": 1250000
+    "input_price": 2000000,
+    "output_price": 12000000,
+    "cache_read_price": 200000,
+    "cache_write_price": 2500000
   },
   {
     "provider": "openrouter",
@@ -4242,9 +4354,9 @@
   {
     "provider": "openrouter",
     "model": "openai/gpt-oss-120b",
-    "input_price": 37000,
+    "input_price": 30000,
     "output_price": 170000,
-    "cache_read_price": null,
+    "cache_read_price": 30000,
     "cache_write_price": null
   },
   {
@@ -4466,24 +4578,24 @@
   {
     "provider": "openrouter",
     "model": "qwen/qwen-plus-2025-07-28:thinking",
-    "input_price": 400000,
-    "output_price": 1200000,
+    "input_price": 260000,
+    "output_price": 780000,
     "cache_read_price": null,
-    "cache_write_price": 500000
+    "cache_write_price": null
   },
   {
     "provider": "openrouter",
     "model": "qwen/qwen2.5-vl-72b-instruct",
-    "input_price": 250000,
-    "output_price": 750000,
-    "cache_read_price": null,
+    "input_price": 800000,
+    "output_price": 1000000,
+    "cache_read_price": 400000,
     "cache_write_price": null
   },
   {
     "provider": "openrouter",
     "model": "qwen/qwen3-14b",
-    "input_price": 227500,
-    "output_price": 910000,
+    "input_price": 120000,
+    "output_price": 240000,
     "cache_read_price": null,
     "cache_write_price": null
   },
@@ -4498,8 +4610,8 @@
   {
     "provider": "openrouter",
     "model": "qwen/qwen3-235b-a22b-2507",
-    "input_price": 149500,
-    "output_price": 598000,
+    "input_price": 90000,
+    "output_price": 550000,
     "cache_read_price": null,
     "cache_write_price": null
   },
@@ -4514,8 +4626,8 @@
   {
     "provider": "openrouter",
     "model": "qwen/qwen3-30b-a3b",
-    "input_price": 120000,
-    "output_price": 500000,
+    "input_price": 130000,
+    "output_price": 520000,
     "cache_read_price": null,
     "cache_write_price": null
   },
@@ -4563,7 +4675,7 @@
     "provider": "openrouter",
     "model": "qwen/qwen3-coder-30b-a3b-instruct",
     "input_price": 70000,
-    "output_price": 270000,
+    "output_price": 280000,
     "cache_read_price": null,
     "cache_write_price": null
   },
@@ -4610,9 +4722,9 @@
   {
     "provider": "openrouter",
     "model": "qwen/qwen3-next-80b-a3b-instruct",
-    "input_price": 90000,
+    "input_price": 100000,
     "output_price": 1100000,
-    "cache_read_price": null,
+    "cache_read_price": 70000,
     "cache_write_price": null
   },
   {
@@ -4634,16 +4746,16 @@
   {
     "provider": "openrouter",
     "model": "qwen/qwen3-vl-235b-a22b-thinking",
-    "input_price": 980000,
-    "output_price": 3950000,
+    "input_price": 400000,
+    "output_price": 4000000,
     "cache_read_price": null,
     "cache_write_price": null
   },
   {
     "provider": "openrouter",
     "model": "qwen/qwen3-vl-30b-a3b-instruct",
-    "input_price": 150000,
-    "output_price": 600000,
+    "input_price": 130000,
+    "output_price": 520000,
     "cache_read_price": null,
     "cache_write_price": null
   },
@@ -4682,8 +4794,8 @@
   {
     "provider": "openrouter",
     "model": "qwen/qwen3.5-122b-a10b",
-    "input_price": 260000,
-    "output_price": 2080000,
+    "input_price": 290000,
+    "output_price": 2400000,
     "cache_read_price": null,
     "cache_write_price": null
   },
@@ -4698,9 +4810,9 @@
   {
     "provider": "openrouter",
     "model": "qwen/qwen3.5-35b-a3b",
-    "input_price": 140000,
-    "output_price": 1000000,
-    "cache_read_price": null,
+    "input_price": 225000,
+    "output_price": 1800000,
+    "cache_read_price": 225000,
     "cache_write_price": null
   },
   {
@@ -4756,7 +4868,7 @@
     "model": "qwen/qwen3.6-35b-a3b",
     "input_price": 140000,
     "output_price": 1000000,
-    "cache_read_price": null,
+    "cache_read_price": 50000,
     "cache_write_price": null
   },
   {
@@ -4807,6 +4919,22 @@
     "cache_read_price": 64000,
     "cache_write_price": 400000
   },
+  {
+    "provider": "openrouter",
+    "model": "qwen/qwen3.8-2.4t-a95b",
+    "input_price": 2000000,
+    "output_price": 6000000,
+    "cache_read_price": 250000,
+    "cache_write_price": null
+  },
+  {
+    "provider": "openrouter",
+    "model": "qwen/qwen3.8-27b",
+    "input_price": 450000,
+    "output_price": 3200000,
+    "cache_read_price": 50000,
+    "cache_write_price": null
+  },
   {
     "provider": "openrouter",
     "model": "qwen/qwen3.8-max",
@@ -4855,6 +4983,14 @@
     "cache_read_price": 500000,
     "cache_write_price": null
   },
+  {
+    "provider": "openrouter",
+    "model": "sakana/sakana-namazu",
+    "input_price": 950000,
+    "output_price": 4000000,
+    "cache_read_price": 150000,
+    "cache_write_price": null
+  },
   {
     "provider": "openrouter",
     "model": "sao10k/l3-lunaris-8b",
@@ -4914,9 +5050,9 @@
   {
     "provider": "openrouter",
     "model": "tencent/hy3-preview",
-    "input_price": 63000,
-    "output_price": 210000,
-    "cache_read_price": 21000,
+    "input_price": 180000,
+    "output_price": 600000,
+    "cache_read_price": 60000,
     "cache_write_price": null
   },
   {
@@ -4954,15 +5090,15 @@
   {
     "provider": "openrouter",
     "model": "thinkingmachines/inkling",
-    "input_price": 1000000,
+    "input_price": 950000,
     "output_price": 4050000,
-    "cache_read_price": 170000,
+    "cache_read_price": 160000,
     "cache_write_price": null
   },
   {
     "provider": "openrouter",
     "model": "thinkingmachines/inkling-small",
-    "input_price": 500000,
+    "input_price": 450000,
     "output_price": 1200000,
     "cache_read_price": 100000,
     "cache_write_price": null
@@ -4983,6 +5119,14 @@
     "cache_read_price": 15000,
     "cache_write_price": null
   },
+  {
+    "provider": "openrouter",
+    "model": "upstage/solar-pro4",
+    "input_price": 30000,
+    "output_price": 120000,
+    "cache_read_price": 6000,
+    "cache_write_price": null
+  },
   {
     "provider": "openrouter",
     "model": "writer/palmyra-x5",
@@ -5023,6 +5167,14 @@
     "cache_read_price": 300000,
     "cache_write_price": null
   },
+  {
+    "provider": "openrouter",
+    "model": "x-ai/grok-4.6",
+    "input_price": 2000000,
+    "output_price": 6000000,
+    "cache_read_price": 500000,
+    "cache_write_price": null
+  },
   {
     "provider": "openrouter",
     "model": "x-ai/grok-build-0.1",
@@ -5106,9 +5258,9 @@
   {
     "provider": "openrouter",
     "model": "z-ai/glm-5",
-    "input_price": 950000,
-    "output_price": 2550000,
-    "cache_read_price": 200000,
+    "input_price": 600000,
+    "output_price": 1920000,
+    "cache_read_price": 120000,
     "cache_write_price": null
   },
   {
@@ -5130,9 +5282,17 @@
   {
     "provider": "openrouter",
     "model": "z-ai/glm-5.2",
-    "input_price": 760000,
-    "output_price": 2420000,
-    "cache_read_price": 140000,
+    "input_price": 490000,
+    "output_price": 1540000,
+    "cache_read_price": 91000,
+    "cache_write_price": null
+  },
+  {
+    "provider": "openrouter",
+    "model": "z-ai/glm-5.2:free",
+    "input_price": 0,
+    "output_price": 0,
+    "cache_read_price": null,
     "cache_write_price": null
   },
   {
@@ -5178,18 +5338,18 @@
   {
     "provider": "openrouter",
     "model": "~deepseek/deepseek-v4-flash-latest",
-    "input_price": 90000,
-    "output_price": 180000,
-    "cache_read_price": 18000,
+    "input_price": 78596,
+    "output_price": 157192,
+    "cache_read_price": 15719,
     "cache_write_price": null
   },
   {
     "provider": "openrouter",
     "model": "~google/gemini-flash-latest",
-    "input_price": 1500000,
-    "output_price": 7500000,
-    "cache_read_price": 150000,
-    "cache_write_price": 83333
+    "input_price": 375000,
+    "output_price": 1875000,
+    "cache_read_price": 37500,
+    "cache_write_price": 20833
   },
   {
     "provider": "openrouter",
@@ -5202,18 +5362,18 @@
   {
     "provider": "openrouter",
     "model": "~moonshotai/kimi-latest",
-    "input_price": 2900000,
-    "output_price": 14000000,
+    "input_price": 2600000,
+    "output_price": 13000000,
     "cache_read_price": 290000,
     "cache_write_price": null
   },
   {
     "provider": "openrouter",
     "model": "~openai/gpt-latest",
-    "input_price": 5000000,
-    "output_price": 30000000,
-    "cache_read_price": 500000,
-    "cache_write_price": 6250000
+    "input_price": 2500000,
+    "output_price": 15000000,
+    "cache_read_price": 250000,
+    "cache_write_price": 3125000
   },
   {
     "provider": "openrouter",
@@ -5228,7 +5388,7 @@
     "model": "~x-ai/grok-latest",
     "input_price": 2000000,
     "output_price": 6000000,
-    "cache_read_price": 300000,
+    "cache_read_price": 500000,
     "cache_write_price": null
   },
   {
@@ -5431,6 +5591,14 @@
     "cache_read_price": 80000,
     "cache_write_price": 500000
   },
+  {
+    "provider": "vercel",
+    "model": "alibaba/qwen3.8-2.4t-a95b",
+    "input_price": 2000000,
+    "output_price": 6000000,
+    "cache_read_price": 200000,
+    "cache_write_price": null
+  },
   {
     "provider": "vercel",
     "model": "alibaba/qwen3.8-max",
@@ -5503,14 +5671,6 @@
     "cache_read_price": 1500000,
     "cache_write_price": 18750000
   },
-  {
-    "provider": "vercel",
-    "model": "anthropic/claude-opus-4.1",
-    "input_price": 15000000,
-    "output_price": 75000000,
-    "cache_read_price": 1500000,
-    "cache_write_price": 18750000
-  },
   {
     "provider": "vercel",
     "model": "anthropic/claude-opus-4.5",
@@ -5690,9 +5850,9 @@
   {
     "provider": "vercel",
     "model": "deepseek/deepseek-v4-flash",
-    "input_price": 200000,
-    "output_price": 400000,
-    "cache_read_price": 40000,
+    "input_price": 130000,
+    "output_price": 260000,
+    "cache_read_price": 28000,
     "cache_write_price": null
   },
   {
@@ -5706,9 +5866,17 @@
   {
     "provider": "vercel",
     "model": "deepseek/deepseek-v4-pro",
-    "input_price": 435000,
-    "output_price": 870000,
-    "cache_read_price": 3600,
+    "input_price": 1740000,
+    "output_price": 3480000,
+    "cache_read_price": 140000,
+    "cache_write_price": null
+  },
+  {
+    "provider": "vercel",
+    "model": "deepseek/deepseek-v4-pro-0813",
+    "input_price": 1320000,
+    "output_price": 3960000,
+    "cache_read_price": 132000,
     "cache_write_price": null
   },
   {
@@ -5823,6 +5991,14 @@
     "cache_read_price": 150000,
     "cache_write_price": null
   },
+  {
+    "provider": "vercel",
+    "model": "google/gemini-3.7-flash",
+    "input_price": 750000,
+    "output_price": 3750000,
+    "cache_read_price": 75000,
+    "cache_write_price": null
+  },
   {
     "provider": "vercel",
     "model": "google/gemini-omni-flash-preview",
@@ -5865,10 +6041,10 @@
   },
   {
     "provider": "vercel",
-    "model": "inclusionai/ling-3.0-flash-free",
-    "input_price": 0,
-    "output_price": 0,
-    "cache_read_price": null,
+    "model": "inclusionai/ling-3.0-flash",
+    "input_price": 60000,
+    "output_price": 180000,
+    "cache_read_price": 12000,
     "cache_write_price": null
   },
   {
@@ -5951,6 +6127,14 @@
     "cache_read_price": null,
     "cache_write_price": null
   },
+  {
+    "provider": "vercel",
+    "model": "meta/muse-glimmer-30b",
+    "input_price": 350000,
+    "output_price": 1500000,
+    "cache_read_price": 40000,
+    "cache_write_price": null
+  },
   {
     "provider": "vercel",
     "model": "meta/muse-spark-1.1",
@@ -5959,6 +6143,22 @@
     "cache_read_price": 150000,
     "cache_write_price": null
   },
+  {
+    "provider": "vercel",
+    "model": "meta/muse-spark-1.2",
+    "input_price": 1250000,
+    "output_price": 4250000,
+    "cache_read_price": 150000,
+    "cache_write_price": null
+  },
+  {
+    "provider": "vercel",
+    "model": "meta/muse-spark-1.2-contributor",
+    "input_price": 100000,
+    "output_price": 200000,
+    "cache_read_price": 2000,
+    "cache_write_price": null
+  },
   {
     "provider": "vercel",
     "model": "minimax/minimax-m2",
@@ -6399,14 +6599,6 @@
     "cache_read_price": 30000,
     "cache_write_price": null
   },
-  {
-    "provider": "vercel",
-    "model": "openai/gpt-5.1-instant",
-    "input_price": 1250000,
-    "output_price": 10000000,
-    "cache_read_price": 130000,
-    "cache_write_price": null
-  },
   {
     "provider": "vercel",
     "model": "openai/gpt-5.1-thinking",
@@ -6439,14 +6631,6 @@
     "cache_read_price": null,
     "cache_write_price": null
   },
-  {
-    "provider": "vercel",
-    "model": "openai/gpt-5.3-chat",
-    "input_price": 1750000,
-    "output_price": 14000000,
-    "cache_read_price": 175000,
-    "cache_write_price": null
-  },
   {
     "provider": "vercel",
     "model": "openai/gpt-5.3-codex",
@@ -6514,10 +6698,10 @@
   {
     "provider": "vercel",
     "model": "openai/gpt-5.6-sol",
-    "input_price": 5000000,
-    "output_price": 30000000,
-    "cache_read_price": 500000,
-    "cache_write_price": 6250000
+    "input_price": 2500000,
+    "output_price": 15000000,
+    "cache_read_price": 250000,
+    "cache_write_price": 3125000
   },
   {
     "provider": "vercel",
@@ -6687,6 +6871,14 @@
     "cache_read_price": 500000,
     "cache_write_price": null
   },
+  {
+    "provider": "vercel",
+    "model": "sakana/namazu",
+    "input_price": 950000,
+    "output_price": 4000000,
+    "cache_read_price": 150000,
+    "cache_write_price": null
+  },
   {
     "provider": "vercel",
     "model": "stepfun/step-3.5-flash",
@@ -6807,6 +6999,14 @@
     "cache_read_price": 300000,
     "cache_write_price": null
   },
+  {
+    "provider": "vercel",
+    "model": "xai/grok-4.6",
+    "input_price": 2000000,
+    "output_price": 6000000,
+    "cache_read_price": 500000,
+    "cache_write_price": null
+  },
   {
     "provider": "vercel",
     "model": "xai/grok-build-0.1",
diff --git a/scripts/aibridgepricesdiff/main.go b/scripts/aibridgepricesdiff/main.go
new file mode 100644
index 00000000000..95d45f94e12
--- /dev/null
+++ b/scripts/aibridgepricesdiff/main.go
@@ -0,0 +1,197 @@
+// aibridgepricesdiff renders a human-readable Markdown summary of the
+// difference between two AI Gateway price seed files (the prices.json produced
+// by aibridgepricesgen).
+//
+// The price refresh workflow uses it to fill the pull request body, so
+// a reviewer sees at a glance which models appeared, which disappeared, and
+// which repriced. Exact figures are deliberately left to the pull request
+// diff, which is the source of truth.
+//
+// Usage:
+//
+//	aibridgepricesdiff -old <path> -new <path>
+package main
+
+import (
+	"encoding/json"
+	"flag"
+	"fmt"
+	"io"
+	"os"
+	"sort"
+	"strings"
+
+	"golang.org/x/xerrors"
+)
+
+// priceRow mirrors the seed file schema written by aibridgepricesgen. Pointer
+// fields preserve the distinction between "not populated by upstream" (null)
+// and "explicitly zero" (0).
+type priceRow struct {
+	Provider        string `json:"provider"`
+	Model           string `json:"model"`
+	InputPrice      *int64 `json:"input_price"`
+	OutputPrice     *int64 `json:"output_price"`
+	CacheReadPrice  *int64 `json:"cache_read_price"`
+	CacheWritePrice *int64 `json:"cache_write_price"`
+}
+
+// modelKey identifies a model across the two snapshots.
+type modelKey struct {
+	provider string
+	model    string
+}
+
+func (r priceRow) key() modelKey {
+	return modelKey{provider: r.Provider, model: r.Model}
+}
+
+func (k modelKey) String() string {
+	return k.provider + "/" + k.model
+}
+
+func less(a, b modelKey) bool {
+	if a.provider != b.provider {
+		return a.provider < b.provider
+	}
+	return a.model < b.model
+}
+
+// diff is the full comparison between two snapshots
+type diff struct {
+	added   []modelKey
+	removed []modelKey
+	changed []modelKey
+}
+
+func (d diff) empty() bool {
+	return len(d.added) == 0 && len(d.removed) == 0 && len(d.changed) == 0
+}
+
+func main() {
+	oldPath := flag.String("old", "", "path to the previous prices.json (required)")
+	newPath := flag.String("new", "", "path to the refreshed prices.json (required)")
+	flag.Parse()
+	if err := run(*oldPath, *newPath, os.Stdout); err != nil {
+		_, _ = fmt.Fprintf(os.Stderr, "aibridgepricesdiff: %v\n", err)
+		os.Exit(1)
+	}
+}
+
+func run(oldPath, newPath string, w io.Writer) error {
+	if oldPath == "" || newPath == "" {
+		return xerrors.New("-old and -new are both required")
+	}
+	oldRows, err := readRows(oldPath)
+	if err != nil {
+		return xerrors.Errorf("read %s: %w", oldPath, err)
+	}
+	newRows, err := readRows(newPath)
+	if err != nil {
+		return xerrors.Errorf("read %s: %w", newPath, err)
+	}
+	_, err = io.WriteString(w, render(compare(oldRows, newRows)))
+	return err
+}
+
+func readRows(path string) ([]priceRow, error) {
+	data, err := os.ReadFile(path)
+	if err != nil {
+		return nil, err
+	}
+	var rows []priceRow
+	if err := json.Unmarshal(data, &rows); err != nil {
+		return nil, xerrors.Errorf("parse: %w", err)
+	}
+	return rows, nil
+}
+
+// compare classifies every model as added, removed, or changed.
+func compare(oldRows, newRows []priceRow) diff {
+	oldByKey := make(map[modelKey]priceRow, len(oldRows))
+	for _, r := range oldRows {
+		oldByKey[r.key()] = r
+	}
+
+	var d diff
+	seen := make(map[modelKey]struct{}, len(newRows))
+	for _, r := range newRows {
+		seen[r.key()] = struct{}{}
+		prev, ok := oldByKey[r.key()]
+		switch {
+		case !ok:
+			d.added = append(d.added, r.key())
+		case !samePrices(prev, r):
+			d.changed = append(d.changed, r.key())
+		}
+	}
+	for _, r := range oldRows {
+		if _, ok := seen[r.key()]; !ok {
+			d.removed = append(d.removed, r.key())
+		}
+	}
+
+	for _, keys := range [][]modelKey{d.added, d.removed, d.changed} {
+		sort.Slice(keys, func(i, j int) bool { return less(keys[i], keys[j]) })
+	}
+	return d
+}
+
+// samePrices reports whether two rows for the same model carry identical
+// prices. A price moving to or from null counts as a change.
+func samePrices(a, b priceRow) bool {
+	return equalPrice(a.InputPrice, b.InputPrice) &&
+		equalPrice(a.OutputPrice, b.OutputPrice) &&
+		equalPrice(a.CacheReadPrice, b.CacheReadPrice) &&
+		equalPrice(a.CacheWritePrice, b.CacheWritePrice)
+}
+
+func equalPrice(a, b *int64) bool {
+	if a == nil || b == nil {
+		return a == nil && b == nil
+	}
+	return *a == *b
+}
+
+// render writes the Markdown summary: counts, then the models in each
+// category. Empty categories are omitted.
+func render(d diff) string {
+	var b strings.Builder
+	write := func(format string, args ...any) {
+		_, _ = fmt.Fprintf(&b, format, args...)
+	}
+
+	write("## Price book changes\n\n")
+	if d.empty() {
+		write("No price changes.\n")
+		return b.String()
+	}
+
+	write("%s added, %s removed, %s changed.\n",
+		plural(len(d.added), "model"),
+		plural(len(d.removed), "model"),
+		plural(len(d.changed), "model"),
+	)
+
+	renderList := func(heading string, keys []modelKey) {
+		if len(keys) == 0 {
+			return
+		}
+		write("\n### %s\n\n", heading)
+		for _, k := range keys {
+			write("- %s\n", k)
+		}
+	}
+	renderList("Added", d.added)
+	renderList("Removed", d.removed)
+	renderList("Changed", d.changed)
+
+	return b.String()
+}
+
+func plural(n int, noun string) string {
+	if n == 1 {
+		return fmt.Sprintf("%d %s", n, noun)
+	}
+	return fmt.Sprintf("%d %ss", n, noun)
+}
diff --git a/scripts/aibridgepricesdiff/main_test.go b/scripts/aibridgepricesdiff/main_test.go
new file mode 100644
index 00000000000..b79e187c640
--- /dev/null
+++ b/scripts/aibridgepricesdiff/main_test.go
@@ -0,0 +1,279 @@
+package main
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestCompare(t *testing.T) {
+	t.Parallel()
+
+	cases := []struct {
+		name        string
+		old         []priceRow
+		new         []priceRow
+		wantAdded   []string
+		wantRemoved []string
+		wantChanged []string
+	}{
+		{
+			name: "identical",
+			old:  []priceRow{row("anthropic", "claude", 1, 2)},
+			new:  []priceRow{row("anthropic", "claude", 1, 2)},
+		},
+		{
+			name: "added",
+			old: []priceRow{
+				row("anthropic", "claude", 1, 2),
+			},
+			new: []priceRow{
+				row("anthropic", "claude", 1, 2),
+				row("openai", "gpt", 3, 4),
+			},
+			wantAdded: []string{"openai/gpt"},
+		},
+		{
+			name: "removed",
+			old: []priceRow{
+				row("anthropic", "claude", 1, 2),
+				row("openai", "gpt", 3, 4),
+			},
+			new: []priceRow{
+				row("anthropic", "claude", 1, 2),
+			},
+			wantRemoved: []string{"openai/gpt"},
+		},
+		{
+			name:        "changed",
+			old:         []priceRow{row("anthropic", "claude", 1, 2)},
+			new:         []priceRow{row("anthropic", "claude", 1, 5)},
+			wantChanged: []string{"anthropic/claude"},
+		},
+		{
+			// Every price field participates, not just input and output.
+			name: "cache price changed",
+			old: []priceRow{{
+				Provider:       "anthropic",
+				Model:          "claude",
+				CacheReadPrice: int64Ptr(1),
+			}},
+			new: []priceRow{{
+				Provider:       "anthropic",
+				Model:          "claude",
+				CacheReadPrice: int64Ptr(2),
+			}},
+			wantChanged: []string{"anthropic/claude"},
+		},
+		{
+			// A model whose price becomes null is a change, not a removal.
+			name: "price unset",
+			old: []priceRow{
+				row("anthropic", "claude", 1, 2),
+			},
+			new: []priceRow{{
+				Provider:   "anthropic",
+				Model:      "claude",
+				InputPrice: int64Ptr(1),
+			}},
+			wantChanged: []string{"anthropic/claude"},
+		},
+		{
+			// Zero is a real price, distinct from an absent one.
+			name: "zero is not null",
+			old: []priceRow{{
+				Provider:   "openai",
+				Model:      "gpt",
+				InputPrice: int64Ptr(0),
+			}},
+			new: []priceRow{{
+				Provider: "openai",
+				Model:    "gpt",
+			}},
+			wantChanged: []string{"openai/gpt"},
+		},
+		{
+			// Same model identifier under two providers must not collide.
+			name: "same model different providers",
+			old: []priceRow{
+				row("anthropic", "shared", 1, 2),
+				row("openai", "shared", 1, 2),
+			},
+			new: []priceRow{
+				row("anthropic", "shared", 1, 2),
+				row("openai", "shared", 9, 2),
+			},
+			wantChanged: []string{"openai/shared"},
+		},
+		{
+			name: "added removed and changed together",
+			old: []priceRow{
+				row("anthropic", "old-model", 1, 2),
+				row("openai", "gpt", 3, 4),
+			},
+			new: []priceRow{
+				row("anthropic", "new-model", 5, 6),
+				row("openai", "gpt", 3, 7),
+			},
+			wantAdded:   []string{"anthropic/new-model"},
+			wantRemoved: []string{"anthropic/old-model"},
+			wantChanged: []string{"openai/gpt"},
+		},
+	}
+
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			t.Parallel()
+
+			got := compare(tc.old, tc.new)
+			require.Equal(t, tc.wantAdded, names(got.added))
+			require.Equal(t, tc.wantRemoved, names(got.removed))
+			require.Equal(t, tc.wantChanged, names(got.changed))
+		})
+	}
+}
+
+func TestCompareSortsDeterministically(t *testing.T) {
+	t.Parallel()
+
+	newRows := []priceRow{
+		row("openai", "b", 1, 1),
+		row("anthropic", "z", 1, 1),
+		row("anthropic", "a", 1, 1),
+	}
+
+	got := compare(nil, newRows)
+	require.Equal(t, []string{"anthropic/a", "anthropic/z", "openai/b"}, names(got.added))
+}
+
+func TestRender(t *testing.T) {
+	t.Parallel()
+
+	t.Run("no changes", func(t *testing.T) {
+		t.Parallel()
+
+		out := render(compare(
+			[]priceRow{row("anthropic", "claude", 1, 2)},
+			[]priceRow{row("anthropic", "claude", 1, 2)},
+		))
+		require.Equal(t, `## Price book changes
+
+No price changes.
+`, out)
+	})
+
+	t.Run("full summary", func(t *testing.T) {
+		t.Parallel()
+
+		out := render(compare(
+			[]priceRow{
+				row("anthropic", "gone", 1, 2),
+				row("openai", "gpt", 1, 2),
+			},
+			[]priceRow{
+				row("anthropic", "fresh", 3, 4),
+				row("openai", "gpt", 2, 3),
+			},
+		))
+
+		// Asserted whole rather than by substring so section order, spacing,
+		// and the absence of stray content are covered too.
+		require.Equal(t, `## Price book changes
+
+1 model added, 1 model removed, 1 model changed.
+
+### Added
+
+- anthropic/fresh
+
+### Removed
+
+- anthropic/gone
+
+### Changed
+
+- openai/gpt
+`, out)
+	})
+}
+
+func TestRun(t *testing.T) {
+	t.Parallel()
+
+	t.Run("missing flags", func(t *testing.T) {
+		t.Parallel()
+
+		var out strings.Builder
+		require.ErrorContains(t, run("", "", &out), "-old and -new are both required")
+	})
+
+	t.Run("reads files", func(t *testing.T) {
+		t.Parallel()
+
+		dir := t.TempDir()
+		oldPath := filepath.Join(dir, "old.json")
+		newPath := filepath.Join(dir, "new.json")
+		writeFile(t, oldPath, `[{"provider":"openai","model":"gpt","input_price":1000000,"output_price":2000000,"cache_read_price":null,"cache_write_price":null}]`)
+		writeFile(t, newPath, `[{"provider":"openai","model":"gpt","input_price":1500000,"output_price":2000000,"cache_read_price":null,"cache_write_price":null}]`)
+
+		var out strings.Builder
+		require.NoError(t, run(oldPath, newPath, &out))
+		require.Contains(t, out.String(), "### Changed\n\n- openai/gpt\n")
+	})
+
+	t.Run("invalid json", func(t *testing.T) {
+		t.Parallel()
+
+		dir := t.TempDir()
+		path := filepath.Join(dir, "bad.json")
+		writeFile(t, path, "{")
+
+		var out strings.Builder
+		err := run(path, path, &out)
+		// The path is part of the message so a failed refresh names the file
+		// that could not be read.
+		require.ErrorContains(t, err, path)
+		require.ErrorContains(t, err, "parse:")
+	})
+
+	t.Run("missing file", func(t *testing.T) {
+		t.Parallel()
+
+		path := filepath.Join(t.TempDir(), "absent.json")
+
+		var out strings.Builder
+		err := run(path, path, &out)
+		require.ErrorIs(t, err, os.ErrNotExist)
+		require.ErrorContains(t, err, path)
+	})
+}
+
+func row(provider, model string, input, output int64) priceRow {
+	return priceRow{
+		Provider:    provider,
+		Model:       model,
+		InputPrice:  int64Ptr(input),
+		OutputPrice: int64Ptr(output),
+	}
+}
+
+func names(keys []modelKey) []string {
+	if len(keys) == 0 {
+		return nil
+	}
+	out := make([]string, 0, len(keys))
+	for _, k := range keys {
+		out = append(out, k.String())
+	}
+	return out
+}
+
+func writeFile(t *testing.T, path, content string) {
+	t.Helper()
+	require.NoError(t, os.WriteFile(path, []byte(content), 0o600))
+}
+
+func int64Ptr(v int64) *int64 { return &v }
diff --git a/site/src/pages/AgentsPage/components/ChatModelAdminPanel/knownModels/knownModelsGenerated.json b/site/src/pages/AgentsPage/components/ChatModelAdminPanel/knownModels/knownModelsGenerated.json
index 5ae75467a28..d851ef2feca 100644
--- a/site/src/pages/AgentsPage/components/ChatModelAdminPanel/knownModels/knownModelsGenerated.json
+++ b/site/src/pages/AgentsPage/components/ChatModelAdminPanel/knownModels/knownModelsGenerated.json
@@ -200,7 +200,8 @@
 			"maxOutputTokens": 128000,
 			"inputCost": 5,
 			"outputCost": 30,
-			"cacheReadCost": 0.5
+			"cacheReadCost": 0.5,
+			"cacheWriteCost": 6.25
 		},
 		{
 			"provider": "azure",
@@ -209,10 +210,10 @@
 			"aliases": [],
 			"contextLimit": 1050000,
 			"maxOutputTokens": 128000,
-			"inputCost": 2.5,
-			"outputCost": 15,
-			"cacheReadCost": 0.25,
-			"cacheWriteCost": 3.125
+			"inputCost": 2,
+			"outputCost": 12,
+			"cacheReadCost": 0.2,
+			"cacheWriteCost": 2.5
 		},
 		{
 			"provider": "azure",
@@ -221,10 +222,10 @@
 			"aliases": [],
 			"contextLimit": 1050000,
 			"maxOutputTokens": 128000,
-			"inputCost": 1,
-			"outputCost": 6,
-			"cacheReadCost": 0.1,
-			"cacheWriteCost": 1.25
+			"inputCost": 0.2,
+			"outputCost": 1.2,
+			"cacheReadCost": 0.02,
+			"cacheWriteCost": 0.25
 		},
 		{
 			"provider": "azure",
@@ -464,10 +465,10 @@
 			"aliases": [],
 			"contextLimit": 1050000,
 			"maxOutputTokens": 128000,
-			"inputCost": 5,
-			"outputCost": 30,
-			"cacheReadCost": 0.5,
-			"cacheWriteCost": 6.25
+			"inputCost": 2.5,
+			"outputCost": 15,
+			"cacheReadCost": 0.25,
+			"cacheWriteCost": 3.125
 		},
 		{
 			"provider": "openrouter",
@@ -476,10 +477,10 @@
 			"aliases": [],
 			"contextLimit": 1050000,
 			"maxOutputTokens": 128000,
-			"inputCost": 1,
-			"outputCost": 6,
-			"cacheReadCost": 0.1,
-			"cacheWriteCost": 1.25
+			"inputCost": 2,
+			"outputCost": 12,
+			"cacheReadCost": 0.2,
+			"cacheWriteCost": 2.5
 		},
 		{
 			"provider": "openrouter",
@@ -488,10 +489,10 @@
 			"aliases": [],
 			"contextLimit": 1050000,
 			"maxOutputTokens": 128000,
-			"inputCost": 0.1,
-			"outputCost": 0.6,
-			"cacheReadCost": 0.01,
-			"cacheWriteCost": 0.125
+			"inputCost": 0.2,
+			"outputCost": 1.2,
+			"cacheReadCost": 0.02,
+			"cacheWriteCost": 0.25
 		},
 		{
 			"provider": "openrouter",
@@ -500,8 +501,9 @@
 			"aliases": [],
 			"contextLimit": 131072,
 			"maxOutputTokens": 131072,
-			"inputCost": 0.037,
-			"outputCost": 0.17
+			"inputCost": 0.03,
+			"outputCost": 0.17,
+			"cacheReadCost": 0.03
 		},
 		{
 			"provider": "openrouter",
@@ -520,10 +522,10 @@
 			"displayName": "GLM-5.2",
 			"aliases": [],
 			"contextLimit": 1048576,
-			"maxOutputTokens": 262144,
-			"inputCost": 0.76,
-			"outputCost": 2.42,
-			"cacheReadCost": 0.14
+			"maxOutputTokens": 131072,
+			"inputCost": 0.49,
+			"outputCost": 1.54,
+			"cacheReadCost": 0.091
 		},
 		{
 			"provider": "openrouter",
@@ -603,10 +605,10 @@
 			"displayName": "DeepSeek V4 Flash",
 			"aliases": [],
 			"contextLimit": 1048576,
-			"maxOutputTokens": 393216,
-			"inputCost": 0.14,
-			"outputCost": 0.28,
-			"cacheReadCost": 0.028
+			"maxOutputTokens": 384000,
+			"inputCost": 0.0798,
+			"outputCost": 0.1596,
+			"cacheReadCost": 0.01596
 		},
 		{
 			"provider": "openrouter",
@@ -615,9 +617,9 @@
 			"aliases": [],
 			"contextLimit": 1048576,
 			"maxOutputTokens": 384000,
-			"inputCost": 0.435,
-			"outputCost": 0.87,
-			"cacheReadCost": 0.003625
+			"inputCost": 0.66,
+			"outputCost": 1.98,
+			"cacheReadCost": 0.022
 		},
 		{
 			"provider": "openrouter",
@@ -651,10 +653,10 @@
 			"aliases": [],
 			"contextLimit": 1050000,
 			"maxOutputTokens": 128000,
-			"inputCost": 5,
-			"outputCost": 30,
-			"cacheReadCost": 0.5,
-			"cacheWriteCost": 6.25
+			"inputCost": 2.5,
+			"outputCost": 15,
+			"cacheReadCost": 0.25,
+			"cacheWriteCost": 3.125
 		},
 		{
 			"provider": "vercel",
@@ -791,20 +793,20 @@
 			"aliases": [],
 			"contextLimit": 1000000,
 			"maxOutputTokens": 384000,
-			"inputCost": 0.2,
-			"outputCost": 0.4,
-			"cacheReadCost": 0.04
+			"inputCost": 0.13,
+			"outputCost": 0.26,
+			"cacheReadCost": 0.028
 		},
 		{
 			"provider": "vercel",
 			"modelIdentifier": "deepseek/deepseek-v4-pro",
 			"displayName": "DeepSeek V4 Pro",
 			"aliases": [],
-			"contextLimit": 1000000,
-			"maxOutputTokens": 384000,
-			"inputCost": 0.435,
-			"outputCost": 0.87,
-			"cacheReadCost": 0.0036
+			"contextLimit": 1048600,
+			"maxOutputTokens": 1048600,
+			"inputCost": 1.74,
+			"outputCost": 3.48,
+			"cacheReadCost": 0.14
 		}
 	]
 }