Best AI SDK for TypeScript

Combined ranking

1. 1
   VVercel AI SDK—15 pts

   GPT #1Claude #1Gemini #1

   Best TypeScript-first developer experience, excellent streaming and structured-output primitives, broad model-provider support, strong React/Next.js integration, and increasingly capable agent workflows

   To stay #1 Reduce major-version API churn and provide longer-lived compatibility guarantees

2. 2
   LLangChain.js—6 pts

   GPT #3Claude —Gemini #3

   Unmatched integration breadth, a huge community, powerful retrieval tooling, and LangGraph.js for durable, controllable agent workflows

   To rank higher Radically simplify its abstractions and documentation while eliminating JavaScript parity gaps

3. 3
   Mastra—6 pts

   GPT #2Claude #4Gemini —

   The strongest TypeScript-native full-stack agent framework, combining agents, workflows, RAG, memory, evaluations, observability, and deployment tooling with clean abstractions

   To rank higher Stabilize its APIs and ecosystem enough to match Vercel AI SDK’s maturity

4. 4
   OOpenAI SDK—4 pts

   GPT —Claude —Gemini #2

   Highly optimized client with direct support for new OpenAI models, zero dependencies, and robust structured output typings.

   To rank higher Offer a standard adapter layer to facilitate fallback providers without rewriting codebase logic.

5. 5
   OOpenAI TypeScript SDK—4 pts

   GPT —Claude #2Gemini —

   Extremely polished official SDK with strict types, Responses API, structured outputs, Realtime/voice support and the Agents SDK layered on top; the widest feature surface of any first-party client and excellent docs

   To rank higher It's single-provider by design — without an escape hatch to other models, teams wanting portability wrap it in something like the AI SDK anyway

6. 6
   AAnthropic TypeScript SDK—3 pts

   GPT —Claude #3Gemini —

   Clean, well-typed client with first-rate tool use, prompt caching and batch support, and the Claude Agent SDK gives TypeScript devs a genuinely production-grade agent harness (subagents, hooks, MCP) that no other provider matches

   To rank higher Broaden beyond the Claude-only ecosystem — provider lock-in plus a smaller third-party integration surface keeps it a specialist choice rather than the default

7. 7
   LLlamaIndex.TS—2 pts

   GPT —Claude —Gemini #4

   The premier TypeScript toolset for document parsing, indexing, and executing complex RAG pipelines.

   To rank higher Accelerate documentation updates and feature parity relative to its Python counterpart.

8. 8
   OpenAI Agents SDKincumbent—2 pts

   GPT #4Claude —Gemini —

   Lightweight, polished agent primitives with excellent TypeScript inference, first-class handoffs, guardrails, tracing, MCP support, and strong voice-agent capabilities

   To rank higher Become genuinely provider-neutral instead of remaining optimized around OpenAI models and infrastructure

9. 9
   CCloudflare Agents SDK—1 pts

   GPT #5Claude —Gemini —

   Excellent for production stateful agents, durable execution, WebSockets, scheduling, workflows, and globally distributed deployment through Workers and Durable Objects

   To rank higher Decouple more of the framework from Cloudflare-specific runtime and infrastructure

10. 10
    Google Gen AI SDK—1 pts

    GPT —Claude —Gemini #5

    Seamless direct integration with Gemini's native multimodal capabilities, context caching, and large context windows.

    To rank higher Provide official UI hooks and stream parsers similar to Vercel's useChat to ease frontend adoption.

11. 11
    LLangChain.js / LangGraph.js—1 pts

    GPT —Claude #5Gemini —

    LangGraph's explicit state-machine model is still the most battle-tested way to build complex, controllable agents in JS, with a massive integration catalog and LangSmith observability

    To rank higher Cut the abstraction tax — layers of indirection, uneven TypeScript ergonomics and docs that trail the Python version push developers to lighter alternatives

By model

Tracked by ModelsAgree · rank 1 = 5 pts … rank 5 = 1 pt · re-polled continuously