LangChain vs CrewAI
Side-by-side from the Top 11 rankings of LangChain vs LlamaIndex vs Haystack: 11 Best RAG Frameworks 2026 and LangChain vs LlamaIndex vs CrewAI: 11 Best AI Agent Builder Platforms 2026. Last verified May 31, 2026.
The short answer
LangChain ranks higher on Top 11 (#1 vs #3) for Developers shipping RAG pipelines into production / Developers building autonomous AI agents and workflows. The most versatile framework with the largest ecosystem for building any type of LLM application, including advanced RAG.
At a glance
| LangChain | CrewAI | |
|---|---|---|
| Top 11 rank | #1 / LangChain vs LlamaIndex vs Haystack: 11 Best RAG Frameworks 2026 | #3 / LangChain vs LlamaIndex vs CrewAI: 11 Best AI Agent Builder Platforms 2026 |
| Score (out of 9.4) | 9.3 | 8.9 |
| Best for | Most versatile & integrated | Best for multi-agent collaboration |
| Pricing | Free (Open Source) | Free (Open Source) |
| HQ | San Francisco, USA | San Francisco, USA |
| Founded | 2022 | 2023 |
LangChain
The most versatile framework with the largest ecosystem for building any type of LLM application, including advanced RAG.
www.langchain.com/See full entry in LangChain vs LlamaIndex vs Haystack: 11 Best RAG Frameworks 2026
CrewAI
An intuitive, powerful framework for orchestrating teams of collaborating AI agents.
www.crewai.com/See full entry in LangChain vs LlamaIndex vs CrewAI: 11 Best AI Agent Builder Platforms 2026
Methodology and scoring weights live at /methodology. No vendor pays for placement — see about.