Odaily Planet Daily News On April 14, at an event at MIT, OpenAI CEO Sam Altman was asked about an open letter that has recently circulated in the tech community, which calls on labs like OpenAI to suspend the development of AI systems more powerful than GPT-4. The letter highlighted concerns about the safety of future systems, but was criticized by many in the industry, including some signatories. In response, Altman confirmed that the company is not currently training GPT-5 and will not be training for some time.