Artificial Analysis overhauls Intelligence Index after GPT-6 Astra scoring skepticism

The Decoder · rss · 2026-09-06

Artificial Analysis released version 4.2 of its Intelligence Index, likely in response to criticism that its benchmarks failed to capture GPT-6 Astra's actual progress. Astra now scores four points above its predecessor but still trails Anthropic's Claude Fable 5.1, highlighting ongoing disputes over how third-party leaderboards measure frontier models.

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