Sailing sim race: Gemini 4 Argon wins at $0.78 per run
A developer built a sailing simulator with Claude Code and had Opus, GPT-6 Astra, Gemini 4 Argon and Qwen make decisions from world state every 5 seconds; Argon won at about $0.78 per run versus $3.58 for Astra, while Opus did not finish.
A developer built a sailing sim with Claude Code, then raced Opus, GPT-6 Astra, Gemini 4 Argon, and Qwen on raw world-state every 5 seconds. The poster says Claude Code wrote the physics, the 3D water, and the AI helm loop. Models get 23 numbers, heading, speed, wind, next mark, and the sim pauses while they think. Argon won at about $0.78 per run, versus about $3.58 for Astra. Opus did not finish, and a smaller Qwen ran aground. This is the poster's own race setup, not a formal benchmark. Reddit: https://www.reddit.com/r/ClaudeAI/comments/1xpij9t/i_built_a_sailing_sim_with_claude_code_and_made/