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OpenAI Releases GPT-5.5 Instant as New Default Model for ChatGPT

OpenAI announced that it has replaced its default ChatGPT model with GPT-5.5 Instant. The company claims the new model offers reduced hallucinations, enhanced personalization by referencing past conversations, and improved overall performance on benchmarks.

OpenAI Releases GPT-5.5 Instant as New Default Model for ChatGPT

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