Physical Intelligence openpi

2025-02-04 · Publisher : Physical Intelligence · Domain : Robotics

Physical Intelligence opens openpi, a repository releasing the code and weights of π0 and π0-FAST under Apache 2.0, with base models pretrained on over 10,000 hours of robot data.

### What changes On February 4, 2025, Physical Intelligence made the openpi repository public (first public commit on that date). The Californian startup, one of the best-funded in the field, released the code and weights of π0, unveiled in October 2024, and π0-FAST, unveiled in January 2025. ### Specifications - **Models**: π0 (VLA with a flow-matching action head) and π0-FAST (autoregressive VLA built on the FAST tokenizer). - **Starting points**: base models pretrained on 10,000+ hours of robot data, with examples for direct use or fine-tuning. - **Platforms**: examples for ALOHA robots and the DROID dataset; the team warns π0 was designed for its own robots and adapting it elsewhere may not work. - **License**: Apache 2.0. - **Follow-up**: π0.5 and PyTorch support added in September 2025. ### Why it matters For the first time, a leading private lab released a frontier VLA with weights and training tools. openpi became a working base for many labs and companies. ### Key takeaway openpi established Physical Intelligence as the open VLA reference, alongside OpenVLA and NVIDIA's GR00T models.

Tags : VLA, Open Source, Physical Intelligence, Poids ouverts