GPT-6 Astra scores 6.0 on the Model Number Benchmark

fang @sofangtasticOriginally posted 2026.09.05

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GPT-6 Astra just set a new SOTA on the Model Number Benchmark with a score of 6.0, a full 0.9 points ahead of Anthropic’s freshly released Fable 5.1 This represents a substantial 0.4 increase over the previous record set by OpenAI with their last gen GPT-5.6 series of models