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GPT-5.6 Sol completes Factorio peaceful run in 13.5 hours

Sol shows improvement over GPT-5.5 but faces scaling limits

1 Oct 31 2:50 PM · 11d ago · 1 article · 1 post · 2 sources · development 1 of 3

Madden noted that Sol surpassed GPT-5.5's performance (which failed to use transport belts) but encountered scaling issues in the blue science stage that slowed progress significantly. The final rocket launch required extensive manual effort by Sol, repeatedly ferrying supplies between disconnected factory areas rather than optimizing production systems.

Sol shows improvement over GPT-5.5 but faces scaling limits
ryanmadden.net

“The rocket launch was only achieved through significant 'manual' effort on Sol's part as it papered over its late-game failures to connect certain production systems by repeatedly ferrying supplies between areas of the factory.”

Ryan Madden

Ryan Madden Researcher / bloggerGPT-5.6 Sol AI model under test

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Peak 13 pieces in 3h at Oct 31, 2 PM; 17 pieces over 11 days (1 article · 1 post · 15 comments) Oct 31, 2 PM — 13 pieces · 1 article · 1 post · 11 comments — Hacker News 12, Newswires 1Oct 31, 5 PM — 2 pieces · 2 comments — Hacker News 2Oct 31, 8 PM — 1 piece · 1 comment — Hacker News 1Oct 31, 11 PM — quietNov 1, 1 AM — 1 piece · 1 comment — Hacker News 1Nov 1, 4 AM — quietNov 1, 7 AM — quietNov 1, 10 AM — quietNov 1, 1 PM — quietNov 1, 4 PM — quietNov 1, 7 PM — quietNov 1, 10 PM — quietNov 2, 1 AM — quietNov 2, 4 AM — quietNov 2, 7 AM — quietNov 2, 10 AM — quietNov 2, 1 PM — quietNov 2, 4 PM — quietNov 2, 7 PM — quietNov 2, 10 PM — quietNov 3, 1 AM — quietNov 3, 4 AM — quietNov 3, 7 AM — quietNov 3, 10 AM — quietNov 3, 1 PM — quietNov 3, 4 PM — quietNov 3, 7 PM — quietNov 3, 10 PM — quietNov 4, 1 AM — quietNov 4, 4 AM — quietNov 4, 7 AM — quietNov 4, 10 AM — quietNov 4, 1 PM — quietNov 4, 4 PM — quietNov 4, 7 PM — quietNov 4, 10 PM — quietNov 5, 1 AM — quietNov 5, 4 AM — quietNov 5, 7 AM — quietNov 5, 10 AM — quietNov 5, 1 PM — quietNov 5, 4 PM — quietNov 5, 7 PM — quietNov 5, 10 PM — quietNov 6, 1 AM — quietNov 6, 4 AM — quietNov 6, 7 AM — quietNov 6, 10 AM — quietNov 6, 1 PM — quietNov 6, 4 PM — quietNov 6, 7 PM — quietNov 6, 10 PM — quietNov 7, 1 AM — quietNov 7, 4 AM — quietNov 7, 7 AM — quietNov 7, 10 AM — quietNov 7, 1 PM — quietNov 7, 4 PM — quietNov 7, 7 PM — quietNov 7, 10 PM — quietNov 8, 1 AM — quietNov 8, 4 AM — quietNov 8, 7 AM — quietNov 8, 10 AM — quietNov 8, 1 PM — quietNov 8, 4 PM — quietNov 8, 7 PM — quietNov 8, 10 PM — quietNov 9, 1 AM — quietNov 9, 4 AM — quietNov 9, 7 AM — quietNov 9, 10 AM — quietNov 9, 1 PM — quietNov 9, 4 PM — quietNov 9, 7 PM — quietNov 9, 10 PM — quietYesterday, 1 AM — quietYesterday, 4 AM — quietYesterday, 7 AM — quietYesterday, 10 AM — quietYesterday, 1 PM — quietYesterday, 4 PM — quietYesterday, 7 PM — quietYesterday, 10 PM — quietToday, 1 AM — quietToday, 4 AM — quietToday, 7 AM — quietToday, 10 AM — quietToday, 1 PM — quietToday, 4 PM — quietToday, 7 PM — quiet 1–3
1–3Sol shows improvement over GPT-5.5 but…
Nov 1Nov 2Nov 3Nov 4Nov 5Nov 6Nov 7Nov 8Nov 9yesterdaynow · 10:24 PM ET

Reported in the same hours no headline names this development itself — these 1 claim were published in its stretch

  1. 1 outlet GPT-5.6 Sol can beat Factorio on peaceful mode

    first by HN Frontpage, 11d ago

All 3 developments of GPT-5.6 Sol completes Factorio peaceful run in 13.5 hours →

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