MemPalace Reaches 47K Stars in 11 Days — Best-Benchmarked Open-Source AI Memory System With 96.6% Retrieval Recall

GitHub·high signal

MemPalace, a local-first AI memory system created April 5, has exploded to 47,000 stars in just 11 days. It achieves 96.6% retrieval recall (R@5) on LongMemEval with zero API calls — no LLM required — and 98.4%+ with hybrid pipelines. The architecture uses a spatial metaphor where people and projects become 'wings,' topics become 'rooms,' and original content lives in 'drawers,' with 29 MCP tools for agent integration and pluggable ChromaDB backends.