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[ARTICLE · art-161777] src=runtimewire.com ↗ pub= topic=artificial-intelligence verified=true sentiment=· neutral

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.

by read1 min views2 publishedOct 31, 2026
GPT-5.6 Sol's Factorio rocket run used 250 million tokens, about $52 at API prices, tester says
Image: Runtimewire (auto-discovered)

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.”…

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source & further reading
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