getzep/graphiti

Provides temporal validity windows and provenance tracking for facts, enabling historical queries and full lineage from derived data to source episodes. Supports both prescribed (Pydantic-defined) and learned ontologies, with incremental graph updates that avoid costly recomputation. Integrates hybrid retrieval combining semantic embeddings, BM25 keyword search, and graph traversal for low-latency context assembly without LLM summarization.

23,665 stars. Actively maintained with 29 commits in the last 30 days.