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OpenAI announced that the standard ChatGPT model has been updated to GPT-5.5 Instant, a new version that offers improved accuracy and fewer hallucinations. These enhancements are particularly noticeable in specialized fields such as medicine, law, and finance.
OpenAI has rolled out GPT-5.5 Instant as the new default model for ChatGPT, promising improved accuracy and performance.
OpenAI has announced several new developments, including providing its GPT-5.5 model for US national security testing and making GPT-5.5 Instant the default for ChatGPT. The company also unveiled a new ChatGPT iOS app designed for workplaces and classrooms.