OpenAI launches GPT-5 as the AI industry seeks a return on investment

ChatGPT-maker OpenAI has officially launched GPT-5, its most advanced AI model yet, which will be available to all 700 million users of ChatGPT from Thursday.

CEO Sam Altman explained that the latest model can provide PhD-level expertise across a wide range of tasks, with faster responses, reduced incorrect, misleading, or fabricated information, and built-in reasoning.

The model introduces variants, GPT-5-mini and GPT-5-nano, optimized for speed and cost, as well as advanced tiers such as GPT-5-pro and GPT-5-thinking, designed for complex tasks.