Four Gemini 4 Argon agents from DeepMind researchers autonomously divided roles and recovered from failures through shared memory, defeating the Ender Dragon in 27 hours and 14 minutes. They wrote 2,783 programs, died 605 times, and ended 22% of executions in errors. Mineflayer supplied positions, blocks behind walls, and enemy states, unlike a human viewing only the screen. The paper puts the cost through victory at about $520 at launch pricing, or roughly KRW 780,000 assuming KRW 1,500 per dollar. This differs from the $1,620 standard-rate cost of the entire session, including observers and post-victory activity. One success does not establish repeatable reliability.