ChatGPT is getting another upgrade. On Thursday, OpenAI unveiled a new flagship A.I. model, GPT-5, and began sharing the technology with the hundreds of millions of people who use ChatGPT, the company’s online chatbot. During a briefing with journalists, OpenAI executives called GPT-5 a “major upgrade” over the systems that previously powered ChatGPT, saying the new technology was faster, more accurate and less likely to “hallucinate,” or make stuff up. “It feels significantly better in obvious ways and in subtle ways,” OpenAI’s chief executive, Sam Altman, said. “GPT-5 is the first time that it feels like talking to an expert in any topic — a Ph.D.-level expert.” Since launching the A.I. boom in late 2022 with the release of ChatGPT, OpenAI has consistently improved the technology that underpins its chatbot. This began with the release of the company’s GPT-4 technology in the spring of 2023 and continued through a series of A.I. models that could listen, look and talk and approximate the way people reason through complex problems. OpenAI’s many rivals, including Google, Meta, the start-up Anthropic and China’s DeepSeek, have released similar technologies. This is the first time that OpenAI has used a so-called reasoning model to power the free version of ChatGPT. Unlike the previous technologies, a reasoning model can spend time “thinking” through complex problems before settling on an answer.

Full report : OpenAI launches GPT-5, its most powerful AI yet. Will it be enough to stay ahead in today’s ruthless AI race?