AnalysisAI ModelsSeptember 22, 2026

Anthropic's Opus 5.5 tops benchmarks against OpenAI's GPT-6 Sol

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Opus 5.5 wins every benchmark in a head-to-head table against GPT-6 Sol, which scores about 100 Elo lower on GDPval, the "real office work" eval. Anthropic holds the top three spots on the AA Benchmark, per one observer.

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Anthropic's Opus 5.5 tops benchmarks against OpenAI's GPT-6 Sol