head to head · open source
langgraph vs CopilotKit
langgraph has 41,863 GitHub stars, 7,069 forks, 786 open issues and last shipped today. CopilotKit has 37,403 stars, 4,640 forks, 295 open issues and last shipped today. langgraph leads on adoption by 12% (41,863 vs 37,403 stars). langgraph is written in Python under MIT; CopilotKit is written in TypeScript under MIT. langgraph has attracted 17% as many forks as stars, CopilotKit 12%. CopilotKit was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (agents, ai), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| langgraph | CopilotKit | |
|---|---|---|
| GitHub stars | ★ 42K | ★ 37K |
| License | MIT | MIT |
| Written in | Python | TypeScript |
| Last push | 2026-09-18 | 2026-09-18 |
| Forks | ⑂ 7.1K | ⑂ 4.6K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick langgraph if
- You weight community size — 42K stars and counting
- You want the MIT license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick CopilotKit if
- You want the CopilotKit feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and CopilotKit fits your workflow better
About langgraph
LangGraph is a low level Python orchestration framework for building stateful, long running agents, aimed at developers and platform teams who need durable execution, human in the loop control, and persistent memory instead of a turnkey agent application.
read the full langgraph overview →
About CopilotKit
CopilotKit is a frontend SDK for building agent native applications and generative UI experiences. It provides tooling and protocols to connect AI agents—regardless of backend framework—to user interfaces across web, mobile, and messaging platforms. It lives in the agentic AI ecosystem, specifically targeting developers who need to embed intelligent assistants into products without rebuilding agent logic for each surface.
read the full CopilotKit overview →
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Frequently asked questions
Is langgraph or CopilotKit more popular?
langgraph has 41,863 GitHub stars and CopilotKit has 37,403. langgraph has the larger community by that measure.
Are langgraph and CopilotKit free?
Both are open source. langgraph is licensed under MIT and CopilotKit under MIT. Neither carries a licence fee.
What is the difference between langgraph and CopilotKit?
langgraph is written in Python and CopilotKit in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, langgraph or CopilotKit?
Choose langgraph if you want the larger community (41,863 stars) or its MIT licence terms. Choose CopilotKit if its feature set, stack or MIT licence fits better. Both are self-hostable.