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AI Memory

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

AI Memory — comparison of mem0, mempalace, cognee, supermemory, letta
Universal memory layer for AI Agents
mem0
The best-benchmarked open-source AI memory system. And it's free.
mempalace
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
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
Popularity
Stars63,74358,51530,16528,97724,327
Global Rank#315#379#1154#1248#1679
Weekly Activity(Aug 14 – Aug 20)
New Stars+5+200+1
Pushes601862
Issues Closed00010
Community
Forks7,4477,5042,9442,5232,584
Contributors397140279105154
Open Issues68370735918141
Project Info
Ownermem0aiMemPalacetopoteretessupermemoryailetta-ai
LicenseApache-2.0MITApache-2.0MITApache-2.0
LanguagePythonPythonPythonTypeScript—
CreatedJun 2023Apr 2026Aug 2023Feb 2024Oct 2023