head to head · open source
eliza vs vellum-assistant
eliza has 19,770 GitHub stars, 5,875 forks, 1,069 open issues and last shipped yesterday. vellum-assistant has 1,477 stars, 232 forks, 179 open issues and last shipped yesterday. eliza leads on adoption by 1,239% (19,770 vs 1,477 stars). eliza is written in TypeScript under MIT; vellum-assistant is written in TypeScript under MIT. eliza has attracted 30% as many forks as stars, vellum-assistant 16%. eliza was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (agent), 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
| eliza | vellum-assistant | |
|---|---|---|
| GitHub stars | ★ 20K | ★ 1.5K |
| License | MIT | MIT |
| Written in | TypeScript | TypeScript |
| Last push | 2026-11-04 | 2026-11-04 |
| Forks | ⑂ 5.9K | ⑂ 232 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick eliza if
- You weight community size — 20K stars and counting
- You want the MIT license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick vellum-assistant if
- You want the vellum-assistant feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and vellum-assistant fits your workflow better
About eliza
elizaOS Your agentic operating system. Eliza · Eliza Cloud · elizaOS downloads · Documentation · App catalog elizaOS is an open source TypeScript framework and product stack for autonomous AI agents. This monorepo contains the core runtime, the Eliza app, the CLI, cloud services, native bridges, and first party plugins. The bootable Linux and Android distributions live in the separate elizaOS/os repository. Choose a starting point Run Eliza from source The repository pins Bun and Node versions in package.json . Install those versions, then: bun install also prepares submodules and patches, provisions supported…
read the full eliza overview →
About vellum-assistant
A personal AI assistant that evolves with you. 8 different types of memory (episodic, semantic, procedural, emotional, prospective, behavioral, narrative, shared) make it truly yours. It learns how you work, remembers what matters, and takes action across your apps. What It Does If you've set up a Personal AI on OpenClaw, Hermes Agent, or Claude Code, you know how long it takes, and how many times you have to hatch a new one to get it right. Vellum gets you the result you're looking for out of the box, one download away. Get Started 1. Sign up or download the app The desktop app is available for macOS and…
read the full vellum-assistant overview →
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Frequently asked questions
Is eliza or vellum-assistant more popular?
eliza has 19,770 GitHub stars and vellum-assistant has 1,477. eliza has the larger community by that measure.
Are eliza and vellum-assistant free?
Both are open source. eliza is licensed under MIT and vellum-assistant under MIT. Neither carries a licence fee.
What is the difference between eliza and vellum-assistant?
eliza is written in TypeScript and vellum-assistant 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, eliza or vellum-assistant?
Choose eliza if you want the larger community (19,770 stars) or its MIT licence terms. Choose vellum-assistant if its feature set, stack or MIT licence fits better. Both are self-hostable.