OpenAI has signed a $38bn deal with Amazon Web Services, the latest in a string of agreements struck by the lossmaking start-up it races to secure computing power. The seven-year deal, which takes OpenAI’s total recent commitments to close to $1.

ChatGPT-maker OpenAI signed a $38 billion deal Monday with Amazon’s AWS cloud computing arm, as the artificial intelligence company continues on a major partnership spree that has also included Oracle...