A agentindex
Comparison

Mem0 vs Zep

A like-for-like, spec-level comparison. Both entries are verified against their docs and repo.

Mem0

Universal memory layer for AI agents.

  • + Provider-agnostic memory that persists across sessions
  • + Extracts entities and relationships automatically
  • + Self-hostable with multiple backend options
  • − Adds infrastructure (vector store) to your stack
  • − Memory quality depends on extraction accuracy

Zep

Long-term memory service for AI assistants and agents.

  • + Temporal knowledge graph for time-aware recall
  • + Summarizes and extracts facts from session history
  • + Self-hostable or managed cloud
  • − Smaller community than Mem0
  • − Requires a running service (not just a library)
Spec Mem0 Zep
Role Agent memory Agent memory
Tags memory, library memory, library
License Apache-2.0 Apache-2.0
Open source Yes Yes
Self-hostable Yes Yes
MCP support No No
Pricing freemium freemium
Price Free tier Free tier
Usage cost No model cost No model cost
Models multi multi
Languages python python, go
GitHub stars 60.0k 4.7k
Last activity 2026-07-03 2026-07-03