Best AI Agent Frameworks

Code-first SDKs for building your own agents.

  1. #1S

    LangGraph

    92

    The most battle-tested choice for stateful production agents.

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  2. #2A

    OpenAI Agents SDK

    88

    Minimal, clean primitives with tracing built in.

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  3. #3A

    CrewAI

    85

    Easiest mental model for role-based multi-agent teams.

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  4. #4A

    Mastra

    84

    Top pick for TypeScript and Next.js builders.

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  5. #5B

    Pydantic AI

    80

    Type safety and structured outputs in Python.

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  6. #6B

    Google Agent Development Kit

    80

    Strong multi-agent tooling for the Gemini ecosystem.

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  7. #7B

    Microsoft Agent Framework

    79

    Natural fit for .NET and Azure teams.

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