Best Open-Source Agent Framework AI Agents (2026)
As of October 2026, the top open-source agent framework AI agent is langchain by langchain-ai, with an overall score of 86.3 / 100. 21 agent framework agents are tracked in this category on The Agentic Leaderboard.
| Rank | Agent | Score |
|---|---|---|
| #13 | langchain by langchain-ai | 86.3 |
| #14 | ai by vercel | 86.2 |
| #16 | crewAI by crewAIInc | 86.1 |
| #23 | autogen by microsoft | 85.6 |
| #31 | agentic-awesome-skills by sickn33 | 85.4 |
| #35 | learn-claude-code by shareAI-lab | 85.0 |
| #41 | langgraph by langchain-ai | 84.9 |
| #42 | dspy by stanfordnlp | 84.9 |
| #43 | semantic-kernel by microsoft | 84.9 |
| #48 | deepagents by langchain-ai | 84.8 |
| #52 | pydantic-ai by pydantic | 84.8 |
| #54 | cognee by topoteretes | 84.7 |
| #55 | SkillOpt by microsoft | 84.7 |
| #56 | ruflo by ruvnet | 84.6 |
| #74 | composio by ComposioHQ | 84.1 |
| #76 | openhuman by tinyhumansai | 84.0 |
| #78 | openai-agents-python by openai | 84.0 |
| #81 | zeroclaw by zeroclaw-labs | 83.9 |
| #87 | claude-mem by thedotmack | 83.8 |
| #88 | adk-python by google | 83.8 |
| #93 | eliza by elizaOS | 83.6 |