OpenAI releases GPT-5.5 Instant, a new default model for ChatGPT
中文摘要
OpenAI 发布 GPT-5.5 Instant，取代 GPT-3.5 Instant，成为 ChatGPT 默认模型。
English Summary
OpenAI has released GPT-5.5 Instant, which will replace GPT-3.5 Instant as the new default model for ChatGPT.
原文节选
The new GPT-5.5 Instant model will replace GPT-3.5 Instant as the default model for ChatGPT