OpenAI has started pilot testing group chats within ChatGPT in Japan, New Zealand, South Korea and Taiwan. Like group chats in messaging apps, you can create conversations with friends and family. In ...

When what OpenAI describes as hundreds of millions of people opened ChatGPT in late May 2026, something had changed under the hood. OpenAI swapped the default model from GPT-5.3 Instant to GPT-5.5 ...

OpenAI rolls out GPT-5.3 Instant, improving ChatGPT with fewer refusals, smarter web answers, lower hallucination rates, and ...

OpenAI announced Friday that it will begin testing ads on ChatGPT in the coming weeks, opening the door to another potential revenue stream for the AI company in addition to its subscription-based ...

OpenAI's GPT-5.3 Instant — the company's most widely used model — reduces hallucinations by up to 26.8% compared to its predecessor, prioritizing accuracy and conversational reliability over raw ...

OpenAI is moving away from models that require heavy hand-holding and toward systems that can better infer the user’s goal, ...