Robot AI model
π0.5
π0.5 extends π0 with heterogeneous co-training for household manipulation in unseen homes. Repository code uses Apache-2.0; Gemma Terms of Use apply to the inherited Gemma model components.
Records last verified Oct 13, 2026 · Send a correction
Also known as pi05, pi0.5, π₀.₅
- Organization
- Physical Intelligence
- Type
- VLA
- Released / introduced
- Apr 22, 2025
- Public weights
- Public weights
- Licence / scope
- Apache-2.0; Gemma Terms of Use
- Parameters
- Not disclosed
- Base model
- π0
- Humanoid association
- None reported
- Inputs
- vision, language
- Outputs
- continuous action chunks
Release dates can mark an announcement or paper introduction. Public checkpoints, code licences and weight terms are distinct; follow the publisher’s links for the stated scope.
Documented embodiments
Source-associated hardware; this list does not establish plug-and-play compatibility or commercial robot capability.
- DROID Franka setup
The public openpi distribution includes a DROID fine-tuned checkpoint.
Disclosed training data
- Physical Intelligence multi-robot demonstrations and heterogeneous co-training data
More robot AI models
Evidence
Sources
- [s1] π0.5: a Vision-Language-Action Model with Open-World Generalization ↗
Physical Intelligence · paper · published Apr 22, 2025 · accessed Oct 13, 2026
- [s2] openpi: models, checkpoints and training examples ↗
Physical Intelligence · official · accessed Oct 13, 2026
- [s3] openpi Apache License 2.0 ↗
Physical Intelligence · official · accessed Oct 13, 2026
- [s4] Gemma Terms of Use distributed with openpi ↗
Physical Intelligence / Google · official · published Feb 21, 2024 · accessed Oct 13, 2026