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GPT-6.1 Sol vs Opus 5.5 Physics Truck Game

Can an AI agent build a real physics vehicle? Claude Opus 5.5 in Claude Code and GPT-6.1 Sol in Codex got the same prompt and the same reference picture: an off-road hill climb in Godot, with a truck…

  • Claude Opus 5.5 completed GPT-6.1 Sol game in 31 minutes
  • GPT-6.1 Sol required slightly less time to build physics truck game
  • Evaluation based on visual resemblance, handling, performance, and API cost

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