mem0ai/mem0
★ 67,459 stars
Covered in week 2026-W27 · the 2026-07 report
The Memory Layer for AI Agents - Drop-in memory infrastructure for AI agents and apps. Context that persists. Built for production.
What mem0 is
All benchmarks run on the same production-representative model stack. Single-pass retrieval (one call, no agentic loops) at a top200 retrieval budget. Scores reflect Mem0's managed platform, which includes proprietary optimizations not available in the open-source SDK; open-source users should expect directionally similar gains but not identical numbers.
From the repository README · read it on GitHub →
Transcript
Build your own AI memory layer with mem0 — free and open source. ChatGPT Plus charges $20/mo for memory that stays trapped inside one chat window. Mem0 gives your AI agents persistent, cross-session recall — it extracts user preferences, facts, and context, stores them in a graph, and surfaces them automatically on every new query. So assistants finally remember your users. Backed by over 25,000 GitHub stars and millions of downloads. Worth it, or overhyped? Tell me below.