ChatGPT Is Smarter, More Accurate, and Less Obsessed With Emojis After Upgrade

OpenAI has made GPT-5.5 Instant the new default model in ChatGPT, replacing GPT-5.3 Instant.

The update aims to improve factual accuracy, cut hallucinations, and perform better on images and STEM-related questions.

GPT-5.5 Instant is also better at deciding when to use web search and is designed to give shorter, more concise answers.

Paid users can get more personalized responses using past chats, files, and Gmail, while all models now show which memory sources were used.

The change affects all ChatGPT users and reflects OpenAI’s push toward more reliable and personalized AI responses.