Atomic Agents vs CrewAI

Atomic Agents and CrewAI are both agent frameworks for Python. Atomic Agents is published by Eigenwise and CrewAI by CrewAI. On GitHub, CrewAI has 60,066 stars and Atomic Agents has 6,304. Both were last active in Oct 2026. The table lines up where they differ (publisher, GitHub stars and weekly downloads) and has the install commands for both. Everything here comes from the listings' public sources and is refreshed daily. Atomic Agents describes itself as: Lightweight Python framework for composing AI agents and tools as small, typed pieces built on Instructor and Pydantic. CrewAI: Open-source Python framework for multi-agent workflows, with role-based Crews and event-driven Flows. Licenses: Atomic Agents MIT, CrewAI MIT.