OpenAI新模型GPT-5.1发布，不跑分不刷榜，主打一个说人话

Core Insights - The article discusses the recent upgrade of ChatGPT to version GPT-5.1, which emphasizes improved intelligence and conversational abilities [1][2]. Model Features - GPT-5.1 includes two sub-models: GPT-5.1 Instant for everyday conversations and quick responses, and GPT-5.1 Thinking for complex reasoning and in-depth problem-solving [2][19]. - The new model allows users to customize the tone and style of interactions, making it more personable and engaging [4][27]. Performance Improvements - Early tests indicate that GPT-5.1 Instant provides more enjoyable and light-hearted responses while maintaining practicality [5][30]. - The model's adherence to instructions has improved significantly, showcasing a better ability to follow specific guidelines [12][15]. Adaptive Reasoning - GPT-5.1 Instant employs adaptive reasoning technology, allowing it to decide when to think critically before responding, thus enhancing the quality of answers [17][18]. - GPT-5.1 Thinking is designed to be twice as fast as its predecessor in typical tasks, while also providing clearer explanations for specialized topics [20][24]. User Customization - Users can select from eight predefined personality traits for the AI, including professional, friendly, and sarcastic, among others [27]. - OpenAI is testing a feature that allows the model to proactively ask users about their preferred tone or style during conversations [28]. User Experience - Initial user experiences suggest that the more personalized GPT-5.1 offers a unique and entertaining interaction, with examples of humorous exchanges [30][32].