GPT-6 Astra scores 61 on AA Intelligence Index, no gain over prior GPT but 2.5x price

cedric_chee · x · 2026-09-04

Per Artificial Analysis data cited by Grok: GPT-6 Astra scores 61 on the Intelligence Index, tied with GPT-5.6 Sol and Grok 4.6, while Claude Fable 5.1 leads at 66 and Muse Spark 1.3 hits 62. No intelligence gain over the prior GPT, though hallucinations halved with some agentic wins, regressions on GDPval, and a 2.5x higher price.

Related event: GPT-6 Astra Reviews: Halved Hallucinations but 2.5x Price Hike(18 posts)→

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