OpenAI claims ChatGPT’s new default model hallucinates way less

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OpenAI Blog

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AI-Generated Claims

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OpenAI Just Upgraded ChatGPT's Default Model—Here's What GPT-5.5 Instant Actually Does.

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GPT-5.5 Instant is now the default ChatGPT model.

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GPT-5.5 Instant: smarter, clearer, and more personalized.

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GPT-5.5 Instant updates ChatGPT's default model with smarter, more accurate answers, reduced hallucinations, and improved personalization controls.

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OpenAI releases GPT-5.5 Instant, a new default model for ChatGPT.

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The new GPT-5.5 Instant model will replace GPT-3.5 Instant as the default model for ChatGPT

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Hallucinations have been an ongoing problem for AI models, but OpenAI says its new GPT-5.5 Instant model has "significant improvements in factuality across the board." The company claims that, based on "internal evaluations," GPT-5.5 Instant produced "52.5% fewer hallucinated claims" than its […]

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