coder · DanielleMaywood · Jul 9, 2026 · Jul 8, 2026 · Jul 9, 2026 · Jul 9, 2026
diff --git a/coderd/apidoc/docs.go b/coderd/apidoc/docs.go
diff --git a/coderd/apidoc/swagger.json b/coderd/apidoc/swagger.json
diff --git a/coderd/database/db2sdk/db2sdk.go b/coderd/database/db2sdk/db2sdk.go
@@ -1702,6 +1702,10 @@ func Chat(c database.Chat, diffStatus *database.ChatDiffStatus, files []database
 	if c.LastTurnSummary.Valid {
 		chat.LastTurnSummary = &c.LastTurnSummary.String
 	}
+	if c.LastReasoningEffort.Valid {
+		lastReasoningEffort := string(c.LastReasoningEffort.ChatReasoningEffort)
+		chat.LastReasoningEffort = &lastReasoningEffort
+	}
 	if c.PlanMode.Valid {
 		chat.PlanMode = codersdk.ChatPlanMode(c.PlanMode.ChatPlanMode)
 	}

diff --git a/coderd/database/db2sdk/db2sdk_test.go b/coderd/database/db2sdk/db2sdk_test.go
@@ -696,30 +696,31 @@ func TestChat_AllFieldsPopulated(t *testing.T) {
 	require.NoError(t, err)
 
 	input := database.Chat{
-		ID:                uuid.New(),
-		OwnerID:           uuid.New(),
-		OwnerUsername:     "owner-username",
-		OwnerName:         "Owner Name",
-		OrganizationID:    uuid.New(),
-		WorkspaceID:       uuid.NullUUID{UUID: uuid.New(), Valid: true},
-		BuildID:           uuid.NullUUID{UUID: uuid.New(), Valid: true},
-		AgentID:           uuid.NullUUID{UUID: uuid.New(), Valid: true},
-		ParentChatID:      uuid.NullUUID{UUID: uuid.New(), Valid: true},
-		RootChatID:        uuid.NullUUID{UUID: uuid.New(), Valid: true},
-		LastModelConfigID: uuid.New(),
-		Title:             "all-fields-test",
-		Status:            database.ChatStatusRunning,
-		ClientType:        database.ChatClientTypeUi,
-		LastError:         pqtype.NullRawMessage{RawMessage: lastErrorRaw, Valid: true},
-		LastTurnSummary:   sql.NullString{String: "turn completed", Valid: true},
-		CreatedAt:         now,
-		UpdatedAt:         now,
-		Archived:          true,
-		UserACL:           database.ChatACL{uuid.NewString(): database.ChatACLEntry{}},
-		PinOrder:          1,
-		PlanMode:          database.NullChatPlanMode{ChatPlanMode: database.ChatPlanModePlan, Valid: true},
-		MCPServerIDs:      []uuid.UUID{uuid.New()},
-		Labels:            database.StringMap{"env": "prod"},
+		ID:                  uuid.New(),
+		OwnerID:             uuid.New(),
+		OwnerUsername:       "owner-username",
+		OwnerName:           "Owner Name",
+		OrganizationID:      uuid.New(),
+		WorkspaceID:         uuid.NullUUID{UUID: uuid.New(), Valid: true},
+		BuildID:             uuid.NullUUID{UUID: uuid.New(), Valid: true},
+		AgentID:             uuid.NullUUID{UUID: uuid.New(), Valid: true},
+		ParentChatID:        uuid.NullUUID{UUID: uuid.New(), Valid: true},
+		RootChatID:          uuid.NullUUID{UUID: uuid.New(), Valid: true},
+		LastModelConfigID:   uuid.New(),
+		LastReasoningEffort: database.NullChatReasoningEffort{ChatReasoningEffort: database.ChatReasoningEffortHigh, Valid: true},
+		Title:               "all-fields-test",
+		Status:              database.ChatStatusRunning,
+		ClientType:          database.ChatClientTypeUi,
+		LastError:           pqtype.NullRawMessage{RawMessage: lastErrorRaw, Valid: true},
+		LastTurnSummary:     sql.NullString{String: "turn completed", Valid: true},
+		CreatedAt:           now,
+		UpdatedAt:           now,
+		Archived:            true,
+		UserACL:             database.ChatACL{uuid.NewString(): database.ChatACLEntry{}},
+		PinOrder:            1,
+		PlanMode:            database.NullChatPlanMode{ChatPlanMode: database.ChatPlanModePlan, Valid: true},
+		MCPServerIDs:        []uuid.UUID{uuid.New()},
+		Labels:              database.StringMap{"env": "prod"},
 		DynamicTools: pqtype.NullRawMessage{
 			RawMessage: json.RawMessage(`[{"name":"tool1","description":"test tool","inputSchema":{"type":"object"}}]`),
 			Valid:      true,

diff --git a/coderd/database/dbgen/dbgen.go b/coderd/database/dbgen/dbgen.go
@@ -131,6 +131,7 @@ func ChatMessage(t testing.TB, db database.Store, seed database.ChatMessage) dat
 		CreatedBy:           []uuid.UUID{seed.CreatedBy.UUID},
 		APIKeyID:            []string{apiKeyID},
 		ModelConfigID:       []uuid.UUID{seed.ModelConfigID.UUID},
+		ReasoningEffort:     []string{string(seed.ReasoningEffort.ChatReasoningEffort)},
 		Role:                []database.ChatMessageRole{role},
 		Content:             []string{content},
 		ContentVersion:      []int16{takeFirst(seed.ContentVersion, chatprompt.CurrentContentVersion)},

diff --git a/coderd/database/dump.sql b/coderd/database/dump.sql
diff --git a/coderd/database/migrations/000541_chat_reasoning_effort.down.sql b/coderd/database/migrations/000541_chat_reasoning_effort.down.sql
@@ -10,6 +10,7 @@ WHERE options ? 'reasoning_effort';
 ALTER TABLE chats DROP COLUMN last_reasoning_effort;
 ALTER TABLE chat_messages DROP COLUMN reasoning_effort;
 ALTER TABLE chat_queued_messages DROP COLUMN reasoning_effort;
+DROP TYPE chat_reasoning_effort;
 
 CREATE VIEW chats_expanded AS
  SELECT c.id,

diff --git a/coderd/database/migrations/000541_chat_reasoning_effort.up.sql b/coderd/database/migrations/000541_chat_reasoning_effort.up.sql
@@ -2,11 +2,12 @@
 -- and recreated so the new chats column can appear in its column list.
 DROP VIEW IF EXISTS chats_expanded;
 
-ALTER TABLE chats ADD COLUMN last_reasoning_effort text;
-ALTER TABLE chat_messages ADD COLUMN reasoning_effort text;
-ALTER TABLE chat_queued_messages ADD COLUMN reasoning_effort text;
+CREATE TYPE chat_reasoning_effort AS ENUM ('none', 'minimal', 'low', 'medium', 'high', 'xhigh', 'max');
+
+ALTER TABLE chats ADD COLUMN last_reasoning_effort chat_reasoning_effort;
+ALTER TABLE chat_messages ADD COLUMN reasoning_effort chat_reasoning_effort;
+ALTER TABLE chat_queued_messages ADD COLUMN reasoning_effort chat_reasoning_effort;
 
--- Reserved for follow-up per-turn reasoning effort support.
 COMMENT ON COLUMN chats.last_reasoning_effort IS 'Stores the most recent message effort once per-turn selection is wired.';
 COMMENT ON COLUMN chat_messages.reasoning_effort IS 'Stores the selected effort for the turn triggered by this message.';
 COMMENT ON COLUMN chat_queued_messages.reasoning_effort IS 'Stores the selected effort until the queued row is promoted.';