head to head · open source
langchain vs prompt-master
langchain has 146,538 GitHub stars, 24,504 forks, 492 open issues and last shipped yesterday. prompt-master has 13,233 stars, 1,540 forks, 33 open issues and last shipped 25 days ago. langchain leads on adoption by 1,007% (146,538 vs 13,233 stars). langchain is written in Python under MIT; prompt-master is written in various languages under MIT. langchain has attracted 17% as many forks as stars, prompt-master 12%. 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.
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Side by side
| langchain | prompt-master | |
|---|---|---|
| GitHub stars | ★ 147K | ★ 13K |
| License | MIT | MIT |
| Written in | Python | — |
| Last push | 2026-09-17 | 2026-08-24 |
| Forks | ⑂ 25K | ⑂ 1.5K |
| 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 prompt-master if
- You want the prompt-master feature set and don't need the biggest community
- You prefer the MIT license terms
- You evaluated both and prompt-master 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 prompt-master
Prompt Master is a Claude skill that writes prompts for other AI tools. It lives in the Claude skills ecosystem: a downloadable repository that is uploaded into Claude.ai through the Customize → Skills interface, or cloned into the Claude Code skills directory. The project carries an MIT license and the topics claude ai, claude skills, llm, and prompt engineering, placing it squarely in AI development tooling rather than in application software.
read the full prompt-master overview →
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Frequently asked questions
Is langchain or prompt-master more popular?
langchain has 146,538 GitHub stars and prompt-master has 13,233. langchain has the larger community by that measure.
Are langchain and prompt-master free?
Both are open source. langchain is licensed under MIT and prompt-master under MIT. Neither carries a licence fee.
What is the difference between langchain and prompt-master?
langchain is written in Python and prompt-master in various languages. 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 prompt-master?
Choose langchain if you want the larger community (146,538 stars) or its MIT licence terms. Choose prompt-master if its feature set, stack or MIT licence fits better. Both are self-hostable.