In a discussion about threats posed by AI systems, Sam Altman, OpenAI’s CEO and co-founder, has confirmed that the company is not currently training GPT-5, the presumed successor to its AI language model GPT-4, released this March. From a report:

Speaking at an event at MIT, Altman was asked about a recent open letter circulated among the tech world that requested that labs like OpenAI pause development of AI systems “more powerful than GPT-4.” The letter highlighted concerns about the safety of future systems but has been criticized by many in the industry, including a number of signatories. Experts disagree about the nature of the threat posed by AI (is it existential or more mundane?) as well as how the industry might go about “pausing” development in the first place.

At MIT, Altman said the letter was “missing most technical nuance about where we need the pause” and noted that an earlier version claimed that OpenAI is currently training GPT-5. “We are not and won’t for some time,” said Altman. “So in that sense it was sort of silly.” However, just because OpenAI is not working on GPT-5 doesn’t mean it’s not expanding the capabilities of GPT-4 — or, as Altman was keen to stress, considering the safety implications of such work. “We are doing other things on top of GPT-4 that I think have all sorts of safety issues that are important to address and were totally left out of the letter,” he said.