Bi-temporal knowledge graph — every fact carries validity windows; stale facts are auto-superseded.
- Storage
- Cloud, or Graphiti + Neo4j/FalkorDB/Kuzu
- Retrieval
- Temporal graph traversal + semantic search over fact nodes.
- Self-host
- Self-host: heavy
- License
- Apache-2.0
- Pricing
- Credit-based cloud; OSS engine free · Free + paid
- GitHub stars
- 28,082
- Last release
- 2026-06-08
- Last commit
- 2026-06-27
- First catalogued
- 2026-06-28
Strengths
- Best 'current state + history'
- Beats Mem0 on neutral temporal tests
- 20k+ stars
Watch out
- Self-host got harder after Community Edition deprecation; needs a graph DB
Best for
- Facts that change over time
Benchmark results
| Benchmark | Value | Backbone | Trust | Source |
|---|---|---|---|---|
| longmemeval | 63.8 accuracy | GPT-4o | Self-reported | Zep ↗ |
| longmemeval | 90.2 accuracy | gpt-5.4 (reasoning=medium) | Self-reported | Zep ↗ |
| longmemeval | 71.2 accuracy | GPT-4o | Independent | Hindsight/Vectorize (competitor re-run) ↗ |
| longmemeval | 58.6 accuracy | gpt-4o-mini | Independent | LiCoMemory (Huang et al., HKUST et al.) — competitor re-run ↗ |
| locomo | 44.76 accuracy | gpt-4o-mini | Independent | LiCoMemory (Huang et al., HKUST et al.) — competitor re-run ↗ |
Sources
- https://www.getzep.com/ (vendor)
- https://github.com/getzep/graphiti (vendor)
Last verified 2026-06-28 · updated by manual-refresh