OpenAI launched its most advanced language model Thursday with the release of GPT-5, a flagship product the company says will enhance ChatGPT as it reportedly nears a $500 billion valuation and aims to stave off competitors in Google, Anthropic and more.

OpenAI on Thursday released GPT-5, unveiling a new version of the artificial intelligence model that fuels popular chatbot ChatGPT. The announcement comes days after the company said ChatGPT is set to reach 700 million weekly active users, up from 500 million just five months ago.

Pro, GPT-5 mini, and GPT-5 nano—what the company calls its "best AI system yet," with availability across all ChatGPT tiers, including free users. The new model family arrives with claims of reduced confabulations,