CrewAI

CrewAI is an open-source Python framework for building multi-agent workflows that go from prototype to production. It combines two ideas: Crews, teams of role-based agents with goals, tools and tasks that collaborate and delegate autonomously, and Flows, event-driven workflows with state, branching and routing that give you precise control. You can use either on its own or combine them, keeping application logic in regular Python.

It suits developers who need more than a single prompt or chatbot: multi-step work with specialised agents, tool use, structured outputs, human review steps, or workflows that mix autonomous reasoning with explicit business logic. Examples in the repository include writing job descriptions, trip planning and stock analysis. Agents can use tools, memory, knowledge sources, checkpointing, async execution and MCP or A2A integrations, and local models are supported through tools such as Ollama and LM Studio.

Getting started: CrewAI requires Python 3.10 to 3.13 and uses uv for dependency management. Install uv, run `uv tool install crewai`, then `crewai create crew` to scaffold a project and `crewai run` to execute it. CrewAI is standalone and does not depend on LangChain.