OpenAI upgrades ChatGPT and Codex with GPT-5.5: ‘a new class of intelligence for real work’

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9to5mac.comby Zac HallApril 23, 2026Submitted April 29, 2026

OpenAI is capping off a busy week of announcements with the release of GPT-5.5, its latest model upgrade for ChatGPT and Codex. The company calls its new model “a new class of intelligence for real...

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