用户破8亿，GPT-5.1来了，表情包含量可自定义

Core Insights - OpenAI has launched the latest upgrade of the GPT-5 series, named GPT-5.1, which includes two main models: GPT-5.1 Instant and GPT-5.1 Thinking, enhancing both intelligence and communication capabilities [1] - The user base of OpenAI has surpassed 800 million, although it is unclear whether this figure refers to registered users or weekly active users [5] - The upgrade introduces more intuitive tone control options for ChatGPT, allowing users to adjust response characteristics such as conciseness and friendliness [3] Model Enhancements - GPT-5.1 Instant has improved instruction-following capabilities, accurately responding to user queries with specific constraints, such as limiting responses to a certain number of words [13] - The new models feature "adaptive reasoning," enabling them to determine when to take time to think before answering more challenging questions, resulting in more thorough and accurate responses [13] - In terms of token usage, GPT-5.1 models have shown a reduction of up to 57% in token consumption for easier questions, while increasing token usage by 71% for the most difficult questions [13] User Experience - Users have reported that GPT-5.1 Instant feels more calm and adept at answering questions, while the Thinking version operates in a focused mode, maintaining speed on simpler tasks [16] - The new customization features have received positive feedback, particularly from users applying the models in productivity scenarios [18] - Despite the upgrades, some users expressed confusion over the specific changes and improvements made in the new version [20] Future Outlook - OpenAI indicates that the transition from GPT-5 to GPT-5.1 represents a meaningful improvement, but the model remains within the GPT-5 generation, suggesting a gradual upgrade approach rather than significant leaps [22]