OpenAI has announced a major update to ChatGPT with the launch of the new GPT-5.1 models. The upgrade includes two models: GPT-5.1 Instant and GPT-5.1 Thinking. Both models are designed to make the chatbot smarter, faster, and more enjoyable to use. According to OpenAI, GPT‑5.1 “improves meaningfully on both intelligence and communication style.”

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The GPT-5.1 Instant model is more conversational and friendly than its predecessor. It better understands instructions and gives clearer, more accurate answers. It also uses adaptive reasoning, which means it can decide when to “think” longer before answering harder questions. Add As A Trusted Source For Google. Add as a preferred source on Google

The GPT-5.1 Thinking model can adjust its

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