CrewAI vs LangChain

CrewAI and LangChain are both free, MIT-licensed Python frameworks for building AI agents, and the tiebreaker between them is not their code: it is that LangChain publishes a price for everything above its free tier and CrewAI publishes none. CrewAI organises agents into a “crew”: each one gets a role, a goal and tools, and the framework handles the hand-offs, plus an event-driven Flows layer when you need more deterministic control. LangChain provides lower-level building blocks (model, tool and retrieval abstractions) and, through LangGraph, an explicit graph of nodes and edges. You decide exactly what state each step sees and where it goes next.

Checked live on 2026-08-17: LangChain's root repository has 144,375 stars and 24,034 forks, reflecting its head start (created October 2022) and use well beyond agents. CrewAI (created October 2023) has 57,200 stars and 8,165 forks. The fairer one-to-one comparison is CrewAI against LangGraph specifically (LangChain's own agent-orchestration engine, at 39,850 stars), and on that comparison CrewAI leads by about 17,000 stars, meaning its crew abstraction has out-starred the part of LangChain built to do the same job.

Pricing is free-versus-free at the framework level, and the paid layers above them are where this decision is actually made. Read live on 2026-08-17, LangSmith publishes a complete self-serve ladder: Developer at $0/seat for one seat and 5,000 base traces a month, Plus at $39/seat/month for 10,000 base traces with unlimited seats and one free serverless deployment, and Enterprise at custom pricing, with the metered rates underneath printed on the same page, $1.50 per LangChain Compute Unit and $1.00 per LangChain Storage Unit. CrewAI's public pricing page, read the same day, shows exactly two plans: Basic, free, capped at 50 workflow executions a month, and Enterprise at custom pricing. There is no published number anywhere between them.

Third-party guides still circulate an old gated CrewAI price ladder, but none of those tiers appears on CrewAI's current public pricing page. The only terms a buyer can verify before signing in are the free Basic allowance and custom Enterprise pricing. This comparison therefore excludes the old figures instead of presenting an unverified historical ladder as a current option.

The two paid layers have also converged in shape, which narrows an axis this comparison used to turn on. LangSmith is no longer only tracing and evals: its own pricing page now meters agent deployment, sandboxes, an LLM gateway and a company-wide Fleet product in the same units as the traces. CrewAI AMP bundled a managed runtime, real-time execution tracing and a no-code Crew Studio from the start. Both vendors now sell the runtime as well as the framework; what still separates them is that one of them tells you what the runtime costs.

One difference is not a preference at all. LangChain ships an official JavaScript/TypeScript SDK (langchain-ai/langchainjs, 18,112 stars, last pushed 2026-08-14) and CrewAI ships no JavaScript or TypeScript framework: its GitHub organisation, read on 2026-08-17, carries the Python framework, a Python tools package, examples and deployment templates, and no JS/TS SDK among them. A team standardised on Node.js is not really choosing between these two.