Best agent frameworks

Build your own AI agents. Last updated 2026-10-13.

  1. 1

    Vercel AI SDK

    Agent frameworks ★ 27k

    The standard for AI features in TypeScript/Next.js apps.

    90.4
  2. 2

    LangGraph

    Agent frameworks ★ 43k

    Most control over long-running, stateful agents.

    88.6
  3. 3

    OpenAI Agents SDK

    Agent frameworks ★ 30k

    Minimal, well-designed primitives from OpenAI.

    85.5
  4. 4

    CrewAI

    Agent frameworks ★ 60k

    Simplest mental model for multi-agent teams.

    84.8
  5. 5

    Mastra

    Agent frameworks ★ 29k

    Best batteries-included agent framework for TS devs.

    83.5
  6. 6

    Pydantic AI

    Agent frameworks ★ 21k

    Typed, testable agents for Python builders.

    81.3
  7. 7

    LangChain

    Agent frameworks ★ 148k

    Huge ecosystem of integrations.

    81.2
  8. 8

    AutoGen

    Agent frameworks ★ 61k

    Research-grade multi-agent patterns.

    74.8

FAQ

What is the best tool for building AI agents?

Our current #1 pick is Vercel AI SDK (score 90.4). The standard for AI features in TypeScript/Next.js apps.

How are these tools ranked?

Each tool gets an editor's score out of 100 for usefulness to builders, plus a bonus of up to 5 points from GitHub stars for open-source tools. See the About page for details.

Are any of these placements paid?

No. None of the tools on this page are sponsored.

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