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Python AI agent frameworks (2026)

Agent frameworks and SDKs whose listings say they are built for Python. Here are all 15 from the AgentScout directory.

Updated

15 matching tools15 open source15 free or with a free tierMost starred: Agno (★ 42,769)

How we picked and ranked: tools are matched by category, the pricing each maker states and what each tool says it does. They are ranked by GitHub stars as recorded on each listing (link checks 2026-10-21); tools without a tracked repo follow, by listing maturity. No paid placements.

  1. Agno logo

    1. Agno

    frameworksOpen source + cloud★ 42,769 GitHub stars

    Python framework and runtime for building, running and managing multi-agent systems with memory, knowledge and tools.

    Pricing (as stated): Open source + cloud · Mature

  2. OpenAI Agents SDK (Python) logo

    2. OpenAI Agents SDK (Python)

    frameworksOpen source★ 30,023 GitHub stars

    OpenAI's Python SDK for building multi-agent workflows; v0.23.0/0.23.1 released Oct 1-2.

    Pricing (as stated): Open source · Mature, official SDK

  3. Pydantic AI logo

    3. Pydantic AI

    frameworksOpen source★ 20,604 GitHub stars

    Type-safe Python agent framework from the Pydantic team.

    Pricing (as stated): Open source · Mature

  4. RocketRide logo

    4. RocketRide

    frameworksOpen source★ 17,753 GitHub stars

    AI pipeline engine with a C++ core and 50+ Python nodes for building, debugging and deploying LLM workflows and agents from VS Code or the CLI.

    Pricing (as stated): Open source · Mature

  5. Microsoft Agent Framework logo

    5. Microsoft Agent Framework

    frameworksOpen source★ 14,169 GitHub stars

    Microsoft's framework for building and orchestrating agents and multi-agent workflows in Python and .NET.

    Pricing (as stated): Open source · Mature

  6. Strands Agents logo

    6. Strands Agents

    frameworksOpen source★ 8,841 GitHub stars

    Strands open-source SDK for building production agent harnesses in Python and TypeScript.

    Pricing (as stated): Open source · Mature

  7. Claude Agent SDK (Python) logo

    7. Claude Agent SDK (Python)

    frameworksOpen source★ 8,293 GitHub stars

    Anthropic's Python SDK for building agents on Claude Code's agent loop, with the CLI bundled, custom tools and hooks.

    Pricing (as stated): Open source · Mature

  8. Upsonic logo

    8. Upsonic

    frameworksOpen source★ 7,957 GitHub stars

    Python framework for building autonomous AI agents.

    Pricing (as stated): Open source · Mature

  9. Genkit logo

    9. Genkit

    frameworksOpen source★ 6,525 GitHub stars

    Google's open-source framework for building agentic apps in JavaScript, Go, Dart and Python.

    Pricing (as stated): Open source · Mature

  10. Marvin logo

    10. Marvin

    frameworksOpen source★ 6,206 GitHub stars

    Python library from Prefect for building AI agents and structured LLM workflows.

    Pricing (as stated): Open source · Mature

  11. Langroid logo

    11. Langroid

    frameworksOpen source★ 4,117 GitHub stars

    Python framework for multi-agent programming with LLMs.

    Pricing (as stated): Open source · Active

  12. Antigravity SDK logo

    12. Antigravity SDK

    frameworksOpen source★ 3,768 GitHub stars

    Google's Python SDK for building stateful AI agents powered by Antigravity and Gemini, abstracting the agent loop and runtime.

    Pricing (as stated): Open source · Active

  13. BeeAI Framework logo

    13. BeeAI Framework

    frameworksOpen source★ 3,436 GitHub stars

    Framework for building production-ready agents and multi-agent systems in Python or TypeScript.

    Pricing (as stated): Open source · Active

  14. Mirascope logo

    14. Mirascope

    frameworksOpen source★ 1,533 GitHub stars

    Lightweight Python library for calling any LLM with typed outputs and tools through one interface, without a heavy framework.

    Pricing (as stated): Open source · Active

  15. Dynamiq logo

    15. Dynamiq

    frameworksOpen source★ 1,071 GitHub stars

    Python orchestration framework for building agentic and RAG applications from reusable nodes and workflows.

    Pricing (as stated): Open source · Active

FAQ

What are the best Python AI agent frameworks?

Ranked by tracked GitHub stars, the top Python AI agent frameworks in our directory are Agno, OpenAI Agents SDK (Python), Pydantic AI, RocketRide, Microsoft Agent Framework. Stars measure popularity, not fit, so compare a few against your own task.

How many Python AI agent frameworks does AgentScout list?

15 tools match. This page shows the top 15. Pricing mix on this page: Open source (14), Open source + cloud (1).

How much do these tools cost?

Pricing is what each maker states on their site. Open-source tools are free to self-host but may need a paid model API key or offer paid cloud plans; freemium tools have a free plan with limits. Check each official site.

Where can I see every tool for building AI agents?

Our task page lists all 247 tools we match to building AI agents.

Related: All tools for building AI agents · Best AI Agent Frameworks · frameworks (15)

Similar searches: Open-source AI agent frameworks · TypeScript and JavaScript AI agent frameworks · Multi-agent frameworks

By role: For AI engineers

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Related categories: Frameworks

Facts come from our directory listings; pricing is as each maker states it and can change. Check official sites before you choose.

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