B'
Bench'd
langchain-memory 0.0 on LongMemEvalcognee 0.0 on LongMemEvalmem0-local 0.0 on LongMemEvalllamaindex-memory 0.0 on LongMemEvalllm-baseline 0.0 on LongMemEvalverifiedstate 0.0 on LongMemEvallangchain-memory 0.0 on LongMemEvalLetta 88.4 on LongMemEval3 systems independently scored36 systems indexedlangchain-memory 0.0 on LongMemEvalcognee 0.0 on LongMemEvalmem0-local 0.0 on LongMemEvalllamaindex-memory 0.0 on LongMemEvalllm-baseline 0.0 on LongMemEvalverifiedstate 0.0 on LongMemEvallangchain-memory 0.0 on LongMemEvalLetta 88.4 on LongMemEval3 systems independently scored36 systems indexed

Mem0

Self-Reported
Mem0 IncWebsiteGitHub(24.8k)DocsLast tested May 7, 2026
MCP Endpoint:https://mcp.mem0.ai/v1

Platform for adding persistent, personalized memory to LLM applications. Provides structured memory management with automatic extraction and retrieval across user sessions.

Recall
97.9Verified (Deterministic)
91.9Nuance (LLM Judge)
Fact retrieval accuracy
Temporal
94.7Verified (Deterministic)
88.7Nuance (LLM Judge)
Time-aware ordering
Reasoning
86.5Verified (Deterministic)
80.5Nuance (LLM Judge)
Multi-hop inference
Overall
93.4Verified (Deterministic)
87.4Nuance (LLM Judge)
Weighted composite

Per-Benchmark Breakdown

BenchmarkVerifiedNuance
LongMemEval85.378.1
LoCoMo82.975.8

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