OpenAI CEO Sam Altman, in a post on X, says the AI company is currently losing money on its ChatGPT Pro subscription. People are using it much more than we expected, he wrote.The company introduced its ChatGPT Pro subscription in December. The subscription costs $200 a month and gives users access to an upgraded version of the o1 reasoning model, o1 pro mode, and has no user restrictions for tools such as the video generator Sora.In another post, Altman wrote that he personally chose the price for ChatGPT Pro in the belief it would bring in money for the company. But the high costs associated with training the large language models (LLMs) generative AI tools require make profitability difficult for OpenAI to achieve.