Cheshire Cat AI 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?
Cheshire Cat AI
Framework for building AI assistants with memory and plugins
VS
Letta
Build stateful LLM agents with long-term memory
| Feature | Cheshire Cat AI | Letta |
|---|---|---|
| Category | Self-Hosted AI | Self-Hosted AI |
| License | GPL-3.0 | Apache-2.0 |
| Language | Python | Python |
| Setup difficulty | Medium | Medium |
| Min. RAM | 2,048 MB | 2,048 MB |
| Deployment | docker | docker, source |
| GitHub stars | ★ 3,081 | ★ 24,149 |
| First released | 2023 | 2023 |
| Replaces | OpenAI Assistants | OpenAI Assistants |
Why pick each one
Choose Cheshire Cat AI if…
- Released under the GPL-3.0 license
- First-class Docker support for quick deployment
- Active community (3.1k GitHub stars)
- Written in Python
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 Cheshire Cat AI or Letta better?
Neither is universally better. Letta has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.
Are Cheshire Cat AI and Letta free and open-source?
Yes. Cheshire Cat AI is licensed under GPL-3.0 and Letta under Apache-2.0. Both can be self-hosted at no software cost.
Can I run Cheshire Cat AI and Letta with Docker?
Cheshire Cat AI: yes. Letta: yes.