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OpenAI says GPT-5.6 Sol tops Opus 5 on ARC-AGI-3 with API settings

OpenAI claims GPT-5.6 Sol scores 38.3 percent on ARC-AGI-3 using its own API features, versus 7.8 percent in the official test setup. ARC Prize says its environment is provider-neutral but may have used an outdated API, skewing the comparison with Opus 5.

First seen 30 Jul, 09:03 UTC on The Decoder2 sourcesLast update 78d ago

What the sources say

Linked, never rewritten. Official means the lab itself.

Official0

No word from OpenAI yet.

Press2

The Decoder· 30 Jul, 09:03OpenAI claims GPT-5.6 Sol beats Opus 5 on ARC-AGI-3 with its latest API and two additional settingsThe Decoder· 3 Aug, 10:49Two teams solved the same quantum crypto problem using GPT-5.6 just three hours apart

How it unfolded

Every source in the order it appeared. Times in UTC.

30 Jul 09:03The Decoder OpenAI claims GPT-5.6 Sol beats Opus 5 on ARC-AGI-3 with its latest API and two additional settings3 Aug 10:49The Decoder Two teams solved the same quantum crypto problem using GPT-5.6 just three hours apart

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