# GPT-5.6 Sol's Factorio rocket run used 250 million tokens, about $52 at API prices, tester says

> Source: <https://runtimewire.com/article/gpt-5-6-sol-s-factorio-rocket-run-used-250-million-tokens-about-52-at-api-prices>
> Published: 2026-10-31 21:20:54+00:00

# 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.”…

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