CrewAI

What it is

CrewAI is a lean multi-agent framework built around the metaphor of a "crew": you define agents with roles and a set of tasks, and CrewAI orchestrates them. It deliberately avoids LangChain dependencies for a lighter footprint.

Why people use it

• Clean role/task abstraction — easy to reason about.
• Standalone (no LangChain), lighter install.
• Strong momentum and community tooling (flows, enterprise features).

Watch-outs

• Younger ecosystem than LangGraph; some advanced patterns need custom work.
• "Crew" autonomy can mask cost blowups if tasks loop.