GPT-6 Astra scores 61 on AA Intelligence Index — no IQ gain over predecessor, price up 2.5x

MicahBerkley · x · 2026-09-04

Per Artificial Analysis data summarized by Grok, GPT-6 Astra scores 61 on the AA Intelligence Index — tied with GPT-5.6 Sol and Grok 4.6, meaning no intelligence gain over its predecessor. Claude Fable 5.1 leads at 66; Muse Spark 1.3 sits at 62. Improvements include halved hallucinations and some agentic wins, but there are regressions on GDPval and other benchmarks. Pricing is 2.5x higher.

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

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