π0: A General-Purpose Robot Policy via VLM + Flow Matching — Physical Intelligence's First Answer

14h ago · 9 min read · TL;DR π0 (pi-zero) is a general-purpose robot policy model released by Physical Intelligence in October 2024. The core idea: combine a pre-trained VLM (PaliGemma 3B) with a Flow Matching-based continuous action output — inheriting Internet-scale sema...