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ModelsThe Decoder·July 11, 2026

OpenAI's GPT-5.6 Sol Ultra reportedly solves a 50-year-old math problem in under an hour

OpenAI's GPT-5.6 Sol Ultra just solved a 50-year-old math problem in under an hour. This breakthrough showcases the model's advanced problem-solving capabilities and could impact fields relying on complex mathematical solutions.

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