head to head · open source
langchain vs Upsonic
langchain has 148,892 GitHub stars, 25,031 forks, 492 open issues and last shipped yesterday. Upsonic has 7,969 stars, 744 forks, 33 open issues and last shipped 5 months ago. langchain leads on adoption by 1,768% (148,892 vs 7,969 stars). langchain is written in Python under MIT; Upsonic is written in Python under MIT. langchain has attracted 17% as many forks as stars, Upsonic 9%. langchain was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
← all 20902 open source comparisons
Side by side
| langchain | Upsonic | |
|---|---|---|
| GitHub stars | ★ 149K | ★ 8.0K |
| License | MIT | MIT |
| Written in | Python | Python |
| Last push | 2026-11-02 | 2026-06-18 |
| Forks | ⑂ 25K | ⑂ 744 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick langchain if
- You weight community size — 149K stars and counting
- You want the MIT license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick Upsonic if
- You want the Upsonic feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Python
- You evaluated both and Upsonic fits your workflow better
About langchain
The agent engineering platform. LangChain is a framework for building agents and LLM powered applications. It helps you chain together interoperable components and third party integrations to simplify AI application development — all while future proofing decisions as the underlying technology evolves. [!TIP] Just getting started? Check out Deep Agents — a higher level package built on LangChain for agents that have built in capabilities for common usage patterns such as planning, subagents, file system usage, and more. Quickstart If you're looking for more advanced customization or agent orchestration, check…
read the full langchain overview →
About Upsonic
Upsonic Build Autonomous AI Agents in Python Documentation • Quickstart • Examples • Discord Overview Upsonic is a Python framework for building autonomous agents like OpenClaw and Claude Cowork, as well as more traditional agent systems. Quick Start Installation IDE Integration Add Upsonic docs as a source in your coding tools: Cursor: Settings → Indexing & Docs → Add Also works with VSCode, Windsurf, and similar tools. Create Autonomous Agent Build Your Own All file and shell operations are restricted to workspace . Path traversal and dangerous commands are blocked. Use Our Prebuilt Ones Prebuilt autonomous…
read the full Upsonic overview →
More in AI & Machine Learning
Related comparisons
More AI Development Platforms projects
Compare either of these against the rest of the AI Development Platforms field.
Frequently asked questions
Is langchain or Upsonic more popular?
langchain has 148,892 GitHub stars and Upsonic has 7,969. langchain has the larger community by that measure.
Are langchain and Upsonic free?
Both are open source. langchain is licensed under MIT and Upsonic under MIT. Neither carries a licence fee.
What is the difference between langchain and Upsonic?
langchain is written in Python and Upsonic in Python. 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 Upsonic?
Choose langchain if you want the larger community (148,892 stars) or its MIT licence terms. Choose Upsonic if its feature set, stack or MIT licence fits better. Both are self-hostable.