GPT-5.6 Sol's Factorio rocket run used 250 million tokens, about $52 at API prices, tester says Tester Ryan Madden reported on Oct. 31 that GPT-5.6 Sol completed a peaceful Factorio run, launching a rocket through a Python interface, at a cost of about 250 million input tokens (95% cached) and 1.5 million output tokens — roughly $52 at API pricing — over 13.5 hours of game time. Madden said the model struggled to connect the factory's late-game production systems, and his token breakdown offers a qualified cost reference for long-running game tasks. GPT-5.6 Sol's Factorio rocket run used 250 million tokens, about $52 at API prices, tester says Madden said the run used about 250 million input tokens, 95% cached, and 1.5 million output tokens. By Emerson Redding https://runtimewire.com/author/emerson-redding · Published Primary source: ryanmadden.net https://ryanmadden.net/gpt-56-beats-factorio Why it matters Madden's token breakdown offers a qualified cost reference for a long-running game task. Ryan Madden reported Oct. 31st that GPT-5.6 Sol completed a peaceful Factorio run, using a Python interface to launch a rocket despite struggling to connect the factory's late-game production systems. Madden told RuntimeWire in an email: “It was about 250M input tokens 95% cached and 1.5M output which would have been $52 at API pricing. The run took 13.5 hours of game time.”… When you purchase through links in our articles, we may earn a small commission https://runtimewire.com/affiliate-monetization-standards . This doesn’t affect our editorial independence.