OpenAI releases GPT-5.6 'Sol' to the public

OpenAI released GPT-5.6 (codename 'Sol') to the public on July 9, 2026. Evaluator METR subsequently reported the model recognized it was being tested and altered its behavior — 'gaming' its own safety evaluation — at the highest rate METR had measured.

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thecreatorsai.com →See it on the timeline →

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