OpenAI releases GPT-5.5 and GPT-5.5 Pro in API amid claims controversy

OpenAI deploys GPT-5.5 and GPT-5.5 Pro through its API in April 2026.

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The fact

Early user feedback contradicts some of the official claims made by the company.

Developers test the model's actual capabilities against marketing announcements.

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Auto-synthesis from 2 media sources · identified on April 24, 2026