GPT-6 Astra beats Claude Opus 5.5 31s in LLM-driven robot sumo sim
DJiafei · x · 2026-09-23
DJiafei ran a head-to-head "physical intelligence" demo: GPT-6 Astra and Claude Opus 5.5 each controlled a simulated Unitree G1 in a MuJoCo ring-fence arena, trying to push the other out.
The control loop ran every 2 sim seconds as state → LLM → joint targets → act. GPT-6 Astra won after 31 seconds, forcing the Opus-controlled bot out of the ring.
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