Physical Intelligence Opens Pi API Beta for Robot Foundation Models

What happened

Physical Intelligence announced the Pi API (the interface one piece of software uses to talk to another) beta on October 13, 2026, making its latest robotic foundation models available to outside developers for hosted fine-tuning (further training of an existing model for a narrower job) and inference. Under the workflow laid out in the announcement, a developer uploads robot data, launches fine-tuning on compute and infrastructure that Physical Intelligence manages, and accesses the fine-tuned model through a hosted gateway to run inference on their robot.

Access to the beta runs through a waitlist, with applicants asked to describe what they want to build. Evaluation data then guides the next iteration.

The company said the latest model available through the API already delivers more data-efficient fine-tuning and improved capability for its partners, and that because it can update the models underpinning the API rapidly, it plans to continue enabling access to its latest and most capable models. Physical Intelligence described the launch as its first step toward providing a physical intelligence foundation the community can build upon and enabling end-to-end autonomy. Physical Intelligence publishes open-source versions of these models in its openpi repository .

Key facts

• Physical Intelligence — announced: the Pi API beta on October 13, 2026, making its latest robotic foundation models available to outside developers for hosted fine-tuning and inference