OpenAI releases GPT-5.5 Instant update to make ChatGPT smarter with fewer emoji

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

The company says the update delivers more accurate, more concise, and less cluttered responses.

OpenAI also says GPT-5.5 Instant uses fewer emojis and shows fewer hallucinated claims in internal tests.

The change affects the default ChatGPT experience for all users and is meant to improve trust in sensitive topics like medicine, law, and finance.