Mem0 vs Zep vs Letta vs Cognee: AI Agent Memory Compared (2026)
A production engineer's comparison of the four leading AI agent memory layers in 2026 — Mem0, Zep, Letta, and Cognee — with real benchmark numbers, token costs, and pricing.
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A production engineer's comparison of the four leading AI agent memory layers in 2026 — Mem0, Zep, Letta, and Cognee — with real benchmark numbers, token costs, and pricing.
GraphRAG promises smarter retrieval, but it can cost 40x more to index. Here is a production breakdown of GraphRAG vs vector RAG vs hybrid, with real 2026 cost, latency, and a decision matrix.
After 3 months of building memory into BizChat and ServiceBot, here's the honest breakdown of Mem0, Letta, and Zep — pricing, benchmarks, and which one I'd pick for each use case.
Choosing the right vector database for your RAG pipeline? This hands-on comparison covers Pinecone, Qdrant, Weaviate, and pgvector — with real latency numbers and a clear decision framework for 2026.