head to head · open source
Hermes Agent vs assistant-ui
Hermes Agent has 246,492 GitHub stars, 51,615 forks, 41,784 open issues and last shipped yesterday. assistant-ui has 12,192 stars, 1,183 forks, 207 open issues and last shipped yesterday. Hermes Agent leads on adoption by 1,922% (246,492 vs 12,192 stars). Hermes Agent is written in Python under MIT; assistant-ui is written in TypeScript under MIT. Hermes Agent has attracted 21% as many forks as stars, assistant-ui 10%. assistant-ui 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 | assistant-ui | |
|---|---|---|
| GitHub stars | ★ 246K | ★ 12K |
| License | MIT | MIT |
| Written in | Python | TypeScript |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 52K | ⑂ 1.2K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Hermes Agent if
- You weight community size — 246K stars and counting
- You want the MIT license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick assistant-ui if
- You want the assistant-ui feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and assistant-ui 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 assistant-ui
assistant ui is an open source TypeScript and React library, released under the MIT licence, for building production grade AI chat experiences quickly, and it is aimed at frontend and full stack developers who need the user experience of ChatGPT inside their own React application.
read the full assistant-ui overview →
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Frequently asked questions
Is Hermes Agent or assistant-ui more popular?
Hermes Agent has 246,492 GitHub stars and assistant-ui has 12,192. Hermes Agent has the larger community by that measure.
Are Hermes Agent and assistant-ui free?
Both are open source. Hermes Agent is licensed under MIT and assistant-ui under MIT. Neither carries a licence fee.
What is the difference between Hermes Agent and assistant-ui?
Hermes Agent is written in Python and assistant-ui 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 assistant-ui?
Choose Hermes Agent if you want the larger community (246,492 stars) or its MIT licence terms. Choose assistant-ui if its feature set, stack or MIT licence fits better. Both are self-hostable.