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GPT-6 Astra Launches a Factorio Rocket With Enemies On After 44 In-Game Hours

September 13, 2026 at 01:07 EDT

Foundation Models
AI Agents

GPT-6 Astra has completed a standard game of Factorio with enemies enabled, launching a rocket after nearly 44 hours of in-game time and 4 days and 11 hours on a Codex /goal clock. Logs from the run put the API-equivalent cost at about $4,500.

Sep 11, 2026 · Independent Codex run

Astra launches a Factorio rocket — enemies on

GPT-6 Astra finished a standard Factorio game with hostile enemies enabled after 44 in-game hours and 4 days 11 hours on the Codex /goal clock. Logs put the API-equivalent cost at about $4,500.

Cost magnitude

Logged API path vs. a 50x cheaper Luna route

Luna + scripts

Estimated cheaper path

$4,500

Logged API path

~50x the cheap route

Column height is 50 to 1. Offloading more work to Luna plus standard scripts is the estimated cut, not a second measured invoice.

44h

In-game time to rocket

4d 11h

Codex /goal clock

$4,500

API-equivalent from logs

$29

Luna share already used

How the agent played

Pause the game

Load save on a disposable headless client

→

Test in Lua

Check designs before committing them live

→

Script inputs

Ordinary keyboard and mouse actions

→

Execute and check

Subagent runs; screenshots catch bad belts

What landed

A rocket with enemies on — multi-day factory planning under combat pressure, not a toy benchmark.

What still limits it

Death at hour 33 with reloads allowed; 4 days 11 hours of wall clock; a ~$4,500 list-price bill.

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