# Zep

> Zep is an open-core agent memory platform whose open-source core is Graphiti, an Apache-2.0 temporal knowledge graph engine that tracks both when an event happened and when a fact became invalid; the architecture is described in arXiv:2501.13956, which reports 94.8% on Deep Memory Retrieval versus 93.4% for MemGPT.

Agent memory platform built on Graphiti, a temporal knowledge graph engine.

- **Category:** Memory & State
- **License:** Apache-2.0 (Graphiti core); Zep Cloud proprietary
- **Language:** Python
- **Self-hosted:** Yes
- **Repository:** https://github.com/getzep/graphiti
- **Last verified:** 2026-10-04

> Caveat: Only Graphiti (the graph engine) is Apache-2.0; the managed Zep Cloud platform is proprietary. Benchmark figures are the vendor's own published results and have not been independently reproduced here.

Source: https://agent.c8.fit/tools/zep/