Hermes Agent vs Letta
A side-by-side comparison of two self-hosted self-hosted ai options — licensing, setup difficulty, resource needs, and what each one replaces.
Not the right match-up?
Hermes Agent
The AI agent that grows with you
VS
Letta
Build stateful LLM agents with long-term memory
| Feature | Hermes Agent | Letta |
|---|---|---|
| Category | Self-Hosted AI | Self-Hosted AI |
| License | free | Apache-2.0 |
| Language | Python | Python |
| Setup difficulty | Easy | Medium |
| Min. RAM | 512 MB | 2,048 MB |
| Deployment | docker, one-click | docker, source |
| GitHub stars | ★ 227,143 | ★ 24,149 |
| First released | 2022 | 2023 |
| Replaces | — | OpenAI Assistants |
Why pick each one
Choose Hermes Agent if…
- Easy to set up — beginner-friendly
- First-class Docker support for quick deployment
- One-click install on common self-host platforms
- Mature project with 227.1k GitHub stars
Choose Letta if…
- Released under the Apache-2.0 license
- First-class Docker support for quick deployment
- Mature project with 24.1k GitHub stars
- Written in Python
Frequently asked questions
Is Hermes Agent or Letta better?
Hermes Agent is the stronger all-round pick: it has both the larger community and the simpler easy setup. Consider Letta if its specific feature set fits your needs better.
Are Hermes Agent and Letta free and open-source?
Yes. Hermes Agent is licensed under free and Letta under Apache-2.0. Both can be self-hosted at no software cost.
Can I run Hermes Agent and Letta with Docker?
Hermes Agent: yes. Letta: yes.