head to head · open source
graphify vs Letta
graphify has 118,991 GitHub stars, 11,505 forks, 1,350 open issues and last shipped 2 days ago. Letta has 3,366 stars, 411 forks, 347 open issues and last shipped yesterday. graphify leads on adoption by 3,435% (118,991 vs 3,366 stars). graphify is written in Python under Apache-2.0; Letta is written in TypeScript under Apache-2.0. graphify has attracted 10% as many forks as stars, Letta 12%. Letta was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (codex), so they are genuine substitutes rather than adjacent tools.
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
| graphify | Letta | |
|---|---|---|
| GitHub stars | ★ 119K | ★ 3.4K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Python | TypeScript |
| Last push | 2026-09-16 | 2026-09-17 |
| Forks | ⑂ 12K | ⑂ 411 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick graphify if
- You weight community size — 119K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick Letta if
- You want the Letta feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches TypeScript
- You evaluated both and Letta fits your workflow better
About graphify
graphify is an Apache 2.0 Python CLI and /graphify skill that turns a whole project — code, docs, SQL schemas, configs, PDFs, images, and video — into a queryable knowledge graph, built for developers and AI agent users in Claude Code, Cursor, Codex, and Gemini CLI who want to query a codebase instead of grepping through files.
read the full graphify overview →
About Letta
Letta Code is an open source TypeScript harness under Apache 2.0 for stateful AI agents. It lives in the AI & Machine Learning / AI Development Platforms ecosystem. It gives agents memory, identity, and a sense of experience over time. It targets agents that behave more like people than tools.
read the full Letta overview →
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Frequently asked questions
Is graphify or Letta more popular?
graphify has 118,991 GitHub stars and Letta has 3,366. graphify has the larger community by that measure.
Are graphify and Letta free?
Both are open source. graphify is licensed under Apache-2.0 and Letta under Apache-2.0. Neither carries a licence fee.
What is the difference between graphify and Letta?
graphify is written in Python and Letta 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, graphify or Letta?
Choose graphify if you want the larger community (118,991 stars) or its Apache-2.0 licence terms. Choose Letta if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.