OpenAI launches GPT-5.5 Instant as new ChatGPT default
OpenAI deploys GPT-5.5 Instant as the new default ChatGPT model for all users, replacing the previous default with a version offering faster responses and personalized context.
Excerpt
OpenAI launches GPT-5.5 Instant as the new ChatGPT default, offering clearer, faster answers and personalized context for all users.
Read at source: https://www.testingcatalog.com/openai-launches-gpt-5-5-instant-as-new-chatgpt-default/