OpenAI chief research scientist Jakub Pachocki said Paul Graham's "Hackers and Painters" inspired him when he was 15.

GPT-5 is OpenAI’s latest, and now flagship, AI model. This new version is now the default system for a range of AI chatbots. OpenAI says GPT-5 is much more intelligent that the previous GPT-4 mode, with major improvements in complex front-end generation.

Quantifying the environmental impact of generative artificial intelligence (AI) and large language models (LLMs) like ChatGPT has been an elusive endeavor, and as The Guardian observed, OpenAI and CEO Sam Altman have been frustratingly opaque about the energy demands of its newest offering, GPT-5.

Checkmate: OpenAI's o3 swept Musk's Grok 4 in an AI chess showdown.

Aug 15 (Reuters) - Current and former employees of OpenAI are looking to sell nearly $6 billion worth of the ChatGPT maker's shares to investors including SoftBank Group (9984.T) and Thrive Capital, a source familiar with the matter told Reuters on Friday.

In March 2026, a jury will hear OpenAI's claims of a "years-long harassment campaign" by Musk via social media, press, and legal moves.

On a call with reporters Wednesday previewing the new chatbot, Altman likened GPT-5 to a Ph.D.-level expert. The new chatbot is also "the biggest single step forward" that OpenAI has taken in worldwide accessibility, Altman said.

The $500 billion valuation would make OpenAI the world’s most valuable startup, surpassing Elon Musk’s SpaceX.

A federal judge on Tuesday denied Elon Musk's bid to dismiss OpenAI's claims of a "years-long harassment campaign" by the Tesla CEO against the company he co-founded in 2015 and later abandoned before ChatGPT became a global phenomenon.

OpenAI released its first open-weight model in years. Analysts say it could narrow China's lead in the open-source AI race.