head to head · open source
claude-mem vs promptfoo
claude-mem has 110,572 GitHub stars, 9,645 forks, 186 open issues and last shipped yesterday. promptfoo has 26,753 stars, 2,633 forks, 651 open issues and last shipped yesterday. claude-mem leads on adoption by 313% (110,572 vs 26,753 stars). claude-mem is written in TypeScript under Apache-2.0; promptfoo is written in TypeScript under MIT. claude-mem has attracted 9% as many forks as stars, promptfoo 10%. promptfoo 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
| claude-mem | promptfoo | |
|---|---|---|
| GitHub stars | ★ 111K | ★ 27K |
| License | Apache-2.0 | MIT |
| Written in | TypeScript | TypeScript |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 9.6K | ⑂ 2.6K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick claude-mem if
- You weight community size — 111K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick promptfoo if
- You want the promptfoo feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and promptfoo fits your workflow better
About claude-mem
Claude Mem is now Grok Mem. The package is still claude mem . 🇨🇳 中文 • 🇹🇼 繁體中文 • 🇯🇵 日本語 • 🇵🇹 Português • 🇧🇷 Português • 🇰🇷 한국어 • 🇪🇸 Español • 🇩🇪 Deutsch • 🇫🇷 Français • 🇮🇱 עברית • 🇸🇦 العربية • 🇷🇺 Русский • 🇵🇱 Polski • 🇨🇿 Čeština • 🇳🇱 Nederlands • 🇹🇷 Türkçe • 🇺🇦 Українська • 🇻🇳 Tiếng Việt • 🇵🇭 Tagalog • 🇮🇩 Indonesia • 🇹🇭 ไทย • 🇮🇳 हिन्दी • 🇧🇩 বাংলা • 🇵🇰 اردو • 🇷🇴 Română • 🇸🇪 Svenska • 🇮🇹 Italiano • 🇬🇷 Ελληνικά • 🇭🇺 Magyar • 🇫🇮 Suomi • 🇩🇰 Dansk • 🇳🇴 Norsk Grok Mem is how Grok Bots remember. Sits next to Grok's own memory. Does not replace it. Quick…
read the full claude-mem overview →
About promptfoo
Promptfoo: LLM evals & red teaming promptfoo is a CLI and library for evaluating and red teaming LLM apps. Stop the trial and error approach start shipping secure, reliable AI apps. Website · Getting Started · Red Teaming · Documentation · Discord Promptfoo is now part of OpenAI. Promptfoo remains open source and MIT licensed. Read the company update. Quick Start Requires Node.js =22.22.0 for npm and npx usage. Node.js 24 LTS is recommended; see the runtime support guide. Also available via brew install promptfoo and pip install promptfoo . You can also use npx promptfoo@latest to run any command without…
read the full promptfoo overview →
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Frequently asked questions
Is claude-mem or promptfoo more popular?
claude-mem has 110,572 GitHub stars and promptfoo has 26,753. claude-mem has the larger community by that measure.
Are claude-mem and promptfoo free?
Both are open source. claude-mem is licensed under Apache-2.0 and promptfoo under MIT. Neither carries a licence fee.
What is the difference between claude-mem and promptfoo?
claude-mem is written in TypeScript and promptfoo 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, claude-mem or promptfoo?
Choose claude-mem if you want the larger community (110,572 stars) or its Apache-2.0 licence terms. Choose promptfoo if its feature set, stack or MIT licence fits better. Both are self-hostable.