OpenAI's CEO Sam Altman has been fired due to a lack of consistent candor in his communications with the board, causing a leadership transition at the company. Co-founder and former chair Greg Brockman has also quit following Altman's termination, leading to further executive turnover at OpenAI. OpenAI is set to release a platform called GPT Store, allowing users to create custom versions of ChatGPT without coding, with plans to reward creators based on usage.