CrewAI

CrewAI is a Python framework for orchestrating multiple AI agents working together on a shared goal. You define each agent's role, goal, and tools; the framework handles the planning, the hand-offs between agents, and the result aggregation. It's the most ergonomic multi-agent abstraction in the Python ecosystem right now.

Adoption has been fast among enterprise PoC teams — the role/goal/tools mental model is intuitive for non-AI-specialists to reason about, which makes it easier to demo and easier to staff. CrewAI's hosted platform layers observability, eval, and deployment on top of the open-source core.

The trade-offs come in production. Debugging multi-agent flows is genuinely hard, and observability is still maturing relative to LangGraph's. For experiments and rapid prototyping it's the obvious choice; for hardened production agents under SLA, LangGraph is often the safer pick.