LangGraph Store
What ChatGPT, Claude, Gemini & Grok actually say · July 2026
The verdict
LangGraph Store appears in 1 AI-ranked category.
Built natively into the LangGraph framework, LangGraph Store (specifically PostgresStore) provides a robust, production-ready key-value and semantic search store (via pgvector) that integrates directly with LangGraph's checkpointers. It is the best choice for developers already building in LangGraph who want an integrated, minimal-latency, multi-tenant memory store without introducing external microservices or third-party SaaS dependencies.
Where LangGraph Store falls short, per the models
- Gemini It lacks higher-level cognitive memory abstractions (like automated semantic fact extraction or temporal graph reasoning), requiring developers to manually write and maintain the extraction, updating, and memory consolidation logic.
Top alternatives per the models: Mem0 · Zep · Letta · Supermemory
Watch LangGraph Store
Boards re-poll weekly and the models change their minds. One short email only when LangGraph Store's standing moves — a rank change, a rival overtaking, or new reasoning from the models. Nothing otherwise.
Embed your ranking badge
LangGraph Store ranks #6 for best long-term memory stores for ai agents by AI-model consensus. Put the badge in your README, docs or site — it updates automatically as the models re-rank.
[](https://modelsagree.com/best/best-long-term-memory-stores-for-ai-agents?utm_source=badge&utm_medium=embed&utm_campaign=badge-langgraph-store)<a href="https://modelsagree.com/best/best-long-term-memory-stores-for-ai-agents?utm_source=badge&utm_medium=embed&utm_campaign=badge-langgraph-store"><img src="https://modelsagree.com/badge/langgraph-store.svg" alt="LangGraph Store — ranked #6 for Best long-term memory stores for AI agents by AI models on ModelsAgree" height="28"></a>Rankings are computed from what the models answer, re-polled weekly · raw reasoning shown verbatim · methodology