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AI Memory

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

AI Memory — comparison of mem0, mempalace, letta, supermemory, cognee
Universal memory layer for AI Agents
mem0
The best-benchmarked open-source AI memory system. And it's free.
mempalace
Letta is the platform for building stateful agents: AI with advanced memory that can learn and self-improve over time.
letta
Memory engine and app that is extremely fast, scalable. The Memory API for the AI era.
supermemory
Knowledge Engine for AI Agent Memory in 6 lines of code
cognee
Popularity
Stars53,67247,66522,23722,19216,293
Global Rank#365#447#1749#1759#2725
Weekly Activity(Apr 18 – Apr 24)
New Stars+104+313+35+46+92
Pushes323109385
Issues Closed13400
Community
Forks6,0116,2282,3522,0351,668
Contributors3055515375146
Open Issues230395791178
Project Info
Ownermem0aiMemPalaceletta-aisupermemoryaitopoteretes
LicenseApache-2.0MITApache-2.0MITApache-2.0
LanguagePythonPythonPythonTypeScriptPython
CreatedJun 2023Apr 2026Oct 2023Feb 2024Aug 2023