head to head · open source
langchain vs Suna
langchain has 146,538 GitHub stars, 24,504 forks, 492 open issues and last shipped yesterday. Suna has 20,218 stars, 3,434 forks, 74 open issues and last shipped yesterday. langchain leads on adoption by 625% (146,538 vs 20,218 stars). langchain is written in Python under MIT; Suna is written in TypeScript under a custom or non-standard licence. langchain has attracted 17% as many forks as stars, Suna 17%. langchain was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (ai, ai-agents), 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
| langchain | Suna | |
|---|---|---|
| GitHub stars | ★ 147K | ★ 20K |
| License | MIT | Custom / other |
| Written in | Python | TypeScript |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 25K | ⑂ 3.4K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick langchain if
- You weight community size — 147K stars and counting
- You want the MIT license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick Suna if
- You want the Suna feature set and don't need the biggest community
- You prefer the Custom / other license terms
- Your stack matches TypeScript
- You evaluated both and Suna fits your workflow better
About langchain
LangChain is an open source framework for building agents and LLM powered applications, written in Python and released under the MIT license. It lives in the AI and machine learning ecosystem, specifically among AI development platforms, and it works by chaining together interoperable components and third party integrations so that AI application development becomes simpler. The project describes itself as the agent engineering platform, and its abstractions are designed to keep applications working as the underlying technology evolves.
read the full langchain overview →
About Suna
Suna is an open source AI Management System for autonomous AI agents that complete real world work. It lives in the AI and machine learning ecosystem, specifically AI development platforms, and presents an open source alternative to Claude Cowork and ChatGPT Work. It packages agents, shared skills, company memory, connectors, and runtime configuration into a git repository, so teams can version, diff, audit, and reuse agent logic.
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Frequently asked questions
Is langchain or Suna more popular?
langchain has 146,538 GitHub stars and Suna has 20,218. langchain has the larger community by that measure.
Are langchain and Suna free?
Both are open source. langchain is licensed under MIT, and Suna has no licence declared in this registry. Both are free to self-host.
What is the difference between langchain and Suna?
langchain is written in Python and Suna 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, langchain or Suna?
Choose langchain if you want the larger community (146,538 stars) or its MIT licence terms. Choose Suna if its feature set, stack or Custom / other licence fits better. Both are self-hostable.