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Zep

by Zep AI

System Card

OrganizationZep AI
Released2024-06
Architecturegraph-rag / Temporal knowledge graph
DetailsBuilds a bi-temporal property graph of entities, facts, and episodes from chat history. Combines graph traversal with vector search and explicit fact invalidation as new information arrives.
Parameters—
Domainagent-memorypersonalizationknowledge-graphepisodic-session
Open SourcePartial
PaperView Paper
WebsiteVisit
CodeRepository
temporal-graphbi-temporalknowledge-graphagent

Capability Profile

Benchmark Scores

3 of 14 benchmarks
Data Transparency:3 self-reported
Long-Context Retrieval
0/5
RULER
no data
NIAH
no data
LooGLE
no data
LongBench
no data
∞Bench
no data
Multi-Turn Recall
1/2
LoCoMo
71.327pSelf-Reported
MemoryBank
no data
Cross-Session Memory
1/1
LongMemEval
71.227pSelf-Reported
Multi-Hop QA
1/3
BABILong
no data
MultiHop-RAG
64.822pSelf-Reported
HotpotQA
no data
Agent Task Memory
0/1
AgentBench-Mem
no data
Personalization
0/1
PerLTQA
no data
Factuality / Grounding
0/1
RAGAS
no data
Sources:Zep paper (arXiv:2501.13956) — 71.2% on LongMemEvalDisputed: Zep claims 75.14, Mem0 independent reeval reports 65.99. Shown value from original Arena entryZep evals