OpenAI releases ‘code red’ GPT-5.2 update to ChatGPT: ‘most capable model series yet’

Published: Dec 11nd 2025 6:22am on 9to5Mac

OpenAI has officially announced its GPT-5.2 upgrade to ChatGPT. This is the so-called “code red” reaction to Google Gemini that OpenAI calls its “most capable model series yet for professional knowledge work.”