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

LangChain Memory

Community-Verified
LangChain IncWebsiteGitHub(98.0k)DocsLast tested May 11, 2026

Built-in memory abstractions within the LangChain framework including buffer, summary, entity, and knowledge-graph memory types. General-purpose conversational memory for chains and agents.

Recall
34.0Verified (Deterministic)
34.0Nuance (LLM Judge)
Fact retrieval accuracy
Temporal
34.0Verified (Deterministic)
34.0Nuance (LLM Judge)
Time-aware ordering
Reasoning
34.0Verified (Deterministic)
34.0Nuance (LLM Judge)
Multi-hop inference
Overall
34.0Verified (Deterministic)
34.0Nuance (LLM Judge)
Weighted composite

Per-Benchmark Breakdown

BenchmarkVerifiedNuance
LongMemEval72.165.6
LoCoMo70.864.3

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