OpenAI CEO Sam Altman said there was one topic in the spotlight at Sun Valley: AI costs. Kevin Dietsch/Getty Images Tech CEOs at Sun Valley had one pressing question for Sam Altman: how to reduce AI costs. Altman said companies are increasingly concerned about AI efficiency and return on investment. He said OpenAI's new GPT-5.6 family brings the agentic coding efficiency companies are looking for. OpenAI CEO Sam Altman said one topic was front and center at the billionaires' summer camp in Sun