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AI Memory

Memory layers and engines for giving AI agents persistent, long-term memory

AI Memory — comparison of mem0, mempalace, supermemory, letta, cognee
Universal memory layer for AI Agents
mem0
The best-benchmarked open-source AI memory system. And it's free.
mempalace
Memory and context engine + app that is extremely fast, scalable, and can be run fully locally. The Memory API for the AI era.
supermemory
Platform for stateful agents: AI with advanced memory that can learn and self-improve over time.
letta
Cognee is the open-source AI memory platform for agents. Give your AI agents persistent long-term memory across sessions with a self-hosted knowledge graph engine.
cognee
Popularity
Stars59,02156,08027,33423,43918,366
Global Rank#339#375#1304#1693#2388
Weekly Activity(Jun 16 – Jun 22)
New Stars+10+10+6+1+25
Pushes281941048
Issues Closed22008
Community
Forks6,8107,2622,3782,4941,955
Contributors34610987153185
Open Issues388580266699
Project Info
Ownermem0aiMemPalacesupermemoryailetta-aitopoteretes
LicenseApache-2.0MITMITApache-2.0Apache-2.0
LanguagePythonPythonTypeScriptPythonPython
CreatedJun 2023Apr 2026Feb 2024Oct 2023Aug 2023