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Tool Comparison
LangChain
The framework for building LLM apps — chains, agents, RAG, and 600+ integrations.
VS
At a Glance
| Attribute | LangChain | CrewAI |
|---|---|---|
| License / Pricing | Free | Open Source |
| Type | ai | ai |
| GitHub Stars | — | — |
| Rating | 4.6/5 | 4.4/5 |
| Key Features | 6 listed | 6 listed |
| Integrations | 6 listed | 4 listed |
| Categories | AI AgentsRAG Frameworks | AI Agents |
Key Features
LangChain
- LCEL (LangChain Expression Language) for composing chains
- LangGraph for stateful, multi-actor agent workflows
- 600+ integrations with LLMs, vector stores, tools
- RAG primitives: document loaders, splitters, retrievers
- Memory and conversation history management
- LangSmith for tracing, debugging, and evaluation
CrewAI
- Role-based agent design with goals and backstory
- Sequential and hierarchical task execution
- Built-in tools: web search, file read/write, code execution
- Agent memory for long-running workflows
- Human-in-the-loop support
- CrewAI Flows for deterministic agent pipelines
Real-World Use Cases
LangChain
Build a document Q&A bot with RAG
Load documents using LangChain document loaders (PDF, web, S3)
Build a ReAct agent with tools
Define tools (web search, calculator, database query)
CrewAI
Automated research and content pipeline
Define a Researcher agent with web search tools
Integrations
LangChain
openaianthropicpineconechromalangsmithweaviate
CrewAI
openaianthropiclangchainllamaindex
🏆 Which should you choose?
Choose LangChain if…
- → you want a managed or commercial offering with enterprise support and SLAs
Choose CrewAI if…
- → you need a fully open-source, self-hosted solution with no vendor lock-in