Rho: A Foundation for Efficiently Adaptable VLA Models
Rho is a new foundation model for vision-language-action (VLA) models in robotics, designed to improve adaptation to specific robots and tasks. The paper introduces a training recipe that separates embodiment adaptation from task adaptation, reducing the amount of task-specific data needed for fine-tuning. Rho variants are pre-trained on different robots and show strong performance on physical tasks, outperforming existing models in several benchmarks. The model also supports online adaptation through a latent policy that learns from human corrections.