RAG vs. LLM Wiki vs. GBrain: Which Architecture Best Powers Agent Memory?

The article analyzes why AI agents forget, then compares three memory architectures—RAG, LLM Wiki, and GBrain—detailing their strengths, weaknesses, scalability, latency, compounding knowledge, and autonomy, and offers guidance on choosing the right approach for different use cases.

AI ArchitectureAgent MemoryGBrain

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RAG vs. LLM Wiki vs. GBrain: Which Architecture Best Powers Agent Memory?

AI Engineering

Apr 11, 2026 · Artificial Intelligence

GBrain: Open-Source AI Memory Engine that Gives OpenClaw and Hermes Long-Term Recall

GBrain, an open‑source AI memory hub created by YC partner Garry Tan, combines Postgres tsvector keyword search with pgvector semantic search via RRF, manages thousands of Markdown notes, and runs an automated nightly agent that refines and links memories, offering a practical long‑term recall layer for agents like OpenClaw and Hermes.

AI memoryGBrainHermes

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GBrain: Open-Source AI Memory Engine that Gives OpenClaw and Hermes Long-Term Recall