AnalysisAI ModelsSeptember 7, 2026

GPT-6 Astra matches Claude Fable 5.1 on Intelligence Index at lower cost

GPT-6 Astra (max) and Claude Fable 5.1 (max with fallback) both score 53 on the Artificial Analysis Intelligence Index, but GPT-6 Astra's average cost per task is $3.26 vs $7.63 for Claude — 57% lower.

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