GPT-5.2 features a massive 400,000-token context window — allowing it to ingest hundreds of documents or large code repositories at once — and a 128,000 max output token limit, enabling it to generate extensive reports or full applications in a single go.

The competitive stakes have intensified as Google's Gemini 3 topped LMArena leaderboards and earned widespread praise for reasoning capabilities, threatening OpenAI's first-mover advantage at a time when the startup has committed over $1 trillion to AI infrastructure development.

OpenAI on Thursday introduced GPT-5.2, the company’s most capable model series for professional knowledge work. The update follows continued adoption of ChatGPT in enterprises, where typical users report saving 40–60 minutes per day, and heavy users report more than 10 hours saved per week.

OpenAI has a new reasoning model called o3-pro that the company says is its most intelligent yet. On Tuesday the ChatGPT maker announced o3-pro on X, sharing some details on its improvement over o3. OpenAI highlighted better performance in "science ...

OpenAI is in a far less commanding position than it was following the public release of ChatGPT a few short years ago.

OpenAI CEO Sam Altman has laid out a roadmap for the release of new AI models: GPT-4.5 and GPT-5. He promised a simpler AI experience in future, with plans to unify OpenAI's models. Sam Altman, CEO of OpenAI, has unveiled the company's next generation of AI models: GPT-4.5 and GPT-5.