LiveUpdated 2026-09-23 14:57 UTC

Is Opus 5.5 better than GPT-6 Astra at Physical Intelligence "literally" ?

Name: Is Opus 5.5 better than GPT-6 Astra at Physical Intelligence "literally" ?
Uploaded: 2026-09-23T14:42:39.000Z
Channel: Jiafei Duan
Description: Is Opus 5.5 better than GPT-6 Astra at Physical Intelligence "literally" ? put GPT-6 Astra and Claude Opus 5.5 in two Unitree G1s in MuJoCo Ring Fence. Every 2 sim seconds: state → LLM → joint targets → act. Goal: force the other out of the ring, and Astra won after 31 second.

This is a AI post classified by Jev as Frontier models (a model release), kept by the AI Radar because it carries real work, not commentary.

Is Opus 5.5 better than GPT-6 Astra at Physical Intelligence "literally" ? put GPT-6 Astra and Claude Opus 5.5 in two Unitree G1s in MuJoCo Ring Fence. Every 2 sim seconds: state → LLM → joint targets → act. Goal: force the other out of the ring, and Astra won after 31 second.

Posted by Jiafei Duan (7.5k followers) 53 min ago · 3 likes · 155 views · view the original post on X. Kept by the AI Radar as Frontier models.

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