#Runtime Critic (1)

Zetta ζ: An Efficient Closed-Loop Embodied Harness for Self-Evolving Physical Intelligence

Zetta is a closed-loop embodied harness that keeps the base VLA frozen and evolves code-based runtime critics and recovery skills through three timescale-separated loops: action-frequency governance, rollout-batch failure diagnosis, and validation-gated skill updates. With the Z-Infra rollout infrastructure (20.6x throughput), it reaches 90.8% on LIBERO-Pro and 93.6% on RoboCasa, with zero-shot skill transfer and robotic Aha moments.