CrewAI
Multi-agent orchestration framework with role-based agent definitions.
- License
- MIT
- Install
- pip package
- Website
- https://www.crewai.com
- GitHub
- https://github.com/crewAIInc/crewAI
pip install crewai
LangChain
Most-adopted framework for chaining LLM calls, tools, and agents. Python and JS/TS.
- License
- MIT
- Install
- pip package
- Website
- https://www.langchain.com
- GitHub
- https://github.com/langchain-ai/langchain
pip install langchain
When to reach for which
CrewAI — Multi-agent orchestration framework with role-based agent definitions.
LangChain — Most-adopted framework for chaining LLM calls, tools, and agents. Python and JS/TS.
Both sit in the Agent Frameworks category — they're substitutes, not complements. Pick by your install constraint (MCP-native, license, hosting model) and which tag overlap matters most to your stack.