Honcho Review: Plastic Labs' Agent Memory Layer (2026) (opens in new tab)

Originally published on andrew.ooo — visit the original for any updates, code snippets that aged out, or follow-up posts. TL;DR Honcho is open-source memory infrastructure for stateful AI agents, built by Plastic Labs and released under a permissive license. It's currently trending on GitHub — 4,301 stars total with 644 new stars this week — and it just posted state-of-the-art numbers on three independent agent-memory benchmarks. The highlights: Reasoning-first memory: extracts conclusions fr...