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What GPT-6 Astra’s 99.9% ARC-AGI-3 Score Actually Measures

This story is from 2026-09-17. It is preserved in the archive; the latest stories are on the live feed.

Spent way too long last week going through ARC Prize's actual results table instead of just screenshotting the headline number. Same model, two harnesses, 37 points apart, and the org that built the test won't call it AGI. Then Fortune found five more numbers quietly changed on OpenAI's own launch…

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  1. 2026-09-17 19:42 · r/artificial
    What GPT-6 Astra’s 99.9% ARC-AGI-3 Score Actually Measures

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