head to head · open source
Hermes Agent vs koishi
Hermes Agent has 246,618 GitHub stars, 51,659 forks, 41,784 open issues and last shipped today. koishi has 6,208 stars, 348 forks, 107 open issues and last shipped 21 days ago. Hermes Agent leads on adoption by 3,873% (246,618 vs 6,208 stars). Hermes Agent is written in Python under MIT; koishi is written in TypeScript under MIT. Hermes Agent has attracted 21% as many forks as stars, koishi 6%. Hermes Agent 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
| Hermes Agent | koishi | |
|---|---|---|
| GitHub stars | ★ 247K | ★ 6.2K |
| License | MIT | MIT |
| Written in | Python | TypeScript |
| Last push | 2026-09-18 | 2026-08-28 |
| Forks | ⑂ 52K | ⑂ 348 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Hermes Agent if
- You weight community size — 247K stars and counting
- You want the MIT license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick koishi if
- You want the koishi feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and koishi fits your workflow better
About Hermes Agent
Hermes Agent is a desktop AI agent developed by Nous Research that maintains persistent memory and self improving capabilities across sessions and platforms. It operates as a local first, cross platform interface for LLMs, integrating with multiple model providers and deployment environments without vendor lock in. The agent implements a closed learning loop where it curates its own memory, creates and refines skills from experience, and supports cross session recall via full text search and summarization.
read the full Hermes Agent overview →
About koishi
Koishi is a cross platform, extensible, high performance chatbot framework written in TypeScript, aimed at anyone who wants to build and run bots across QQ, Telegram, Discord, Feishu, Matrix, LINE, mail and OneBot from one codebase.
read the full koishi overview →
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Frequently asked questions
Is Hermes Agent or koishi more popular?
Hermes Agent has 246,618 GitHub stars and koishi has 6,208. Hermes Agent has the larger community by that measure.
Are Hermes Agent and koishi free?
Both are open source. Hermes Agent is licensed under MIT and koishi under MIT. Neither carries a licence fee.
What is the difference between Hermes Agent and koishi?
Hermes Agent is written in Python and koishi 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, Hermes Agent or koishi?
Choose Hermes Agent if you want the larger community (246,618 stars) or its MIT licence terms. Choose koishi if its feature set, stack or MIT licence fits better. Both are self-hostable.