A powerful, type-safe AI SDK for building AI-powered applications.

• Provider-agnostic adapters (OpenAI, Anthropic, Gemini, Ollama, etc.)
• Tree-shakeable adapters - Import only what you need for smaller bundles
• Multimodal content support - Send images, audio, video, and documents
• Image generation - Generate images with OpenAI DALL-E/GPT-Image and Gemini Imagen
• Chat completion, streaming, and agent loop strategies
• Headless chat state management with adapters (SSE, HTTP stream, custom)
• Isomorphic type-safe tools with server/client execution
• Enhanced integration with TanStack Start - Share implementations between AI tools and server functions

Import only the functionality you need for smaller bundle sizes:

// Only chat functionality - no summarization code bundled
import { openaiText } from '@tanstack/ai-openai/adapters'
import { generate } from '@tanstack/ai'

const textAdapter = openaiText()

const result = generate({
  adapter: textAdapter,
  model: 'gpt-4o',
  messages: [{ role: 'user', content: [{ type: 'text', content: 'Hello!' }] }],
})

for await (const chunk of result) {
  console.log(chunk)
}

Available adapters: openaiText, openaiEmbed, openaiSummarize, anthropicText, geminiText, ollamaText, and more.

TanStack AI works with any framework (Next.js, Express, Remix, etc.).

With TanStack Start, you get a bonus: share implementations between AI tools and server functions with createServerFnTool:

import { createServerFnTool } from '@tanstack/ai-react'

// Define once, get AI tool AND server function (TanStack Start only)
const getProducts = createServerFnTool({
  name: 'getProducts',
  inputSchema: z.object({ query: z.string() }),
  execute: async ({ query }) => db.products.search(query),
})

// Use in AI chat
chat({ tools: [getProducts.server] })

// Call directly from components (no API endpoint needed!)
const products = await getProducts.serverFn({ query: 'laptop' })

No duplicate logic, full type safety, automatic validation. The serverFn feature requires TanStack Start. See docs for details.

• We welcome issues and pull requests!
• Participate in GitHub discussions
• Chat with the community on Discord
• See CONTRIBUTING.md for setup instructions

We're looking for TanStack AI Partners to join our mission! Partner with us to push the boundaries of TanStack AI and build amazing things together.

LET'S CHAT

• TanStack Config – Tooling for JS/TS packages
• TanStack DB – Reactive sync client store
• TanStack Devtools – Unified devtools panel
• TanStack Form – Type‑safe form state
• TanStack Pacer – Debouncing, throttling, batching
• TanStack Query – Async state & caching
• TanStack Ranger – Range & slider primitives
• TanStack Router – Type‑safe routing, caching & URL state
• TanStack Start – Full‑stack SSR & streaming
• TanStack Store – Reactive data store
• TanStack Table – Headless datagrids
• TanStack Virtual – Virtualized rendering

… and more at TanStack.com »