ChatGPT users may notice something different about the AI chatbot experience over the next few days. That’s because OpenAI is tweaking how its most-used model works.
OpenAI says it’s releasing a new version of its GPT-5.5 Instant model. The model originally arrived on May 5 (5/5) before receiving a separate behavior change.
At the time, the company said its default model in ChatGPT offered greater intelligence with less gratuitous emoji usage.
GPT-5.5 Instant was adjusted a few weeks later to be “easier to read, more natural in everyday conversations, and better paced in practical help tasks, with fewer overly long or bullet-heavy responses.”
Next, GPT-5.5 Instant is getting a new adjustment that OpenAI makes it “much more fun to talk to.”
