# CrewAI — A popular open-source framework for role-based, collaborating multi-agent teams.

> Source: The Agents Index — https://theagentsindex.com/crewai (structured, researched, re-verified)
> Facts last verified: 2026-07-13

CrewAI is an open-source Python framework for orchestrating multiple AI agents as a collaborating "crew" — each agent given a role, goal and tools — plus flows for more deterministic control. It has become one of the most popular ways to stand up multi-agent systems quickly.

| Fact | Value |
| --- | --- |
| Website | https://www.crewai.com |
| API | Yes |

## Strengths and weaknesses

- ✓ Clean, approachable abstraction for role-based multi-agent systems.
- ✓ Fast to prototype; large and active community.
- ✗ Younger and less battle-tested than lower-level frameworks for complex, long-running control.
- ✗ Deterministic control needs Flows — the crew model alone can be hard to constrain.

## Key features

- **Role-based crews** — Compose agents with roles, goals and tools that collaborate on tasks.
- **Flows** — Event-driven, more deterministic orchestration for production control.
- **Open-source core** — Self-hostable Python framework with a growing community.

## Use cases

- **Multi-agent workflow** — Model a research-then-write pipeline as a small crew of specialised agents.
- **Prototype fast** — Stand up a working multi-agent system quickly with minimal boilerplate.