OpenAI has signed a seven-year, US$38 billion deal to buy cloud services from Amazon.com, in its first big push to power its AI ambitions after a restructuring last week that gave the ChatGPT maker greater operational and financial freedom. The agreement, announced on Monday, will give OpenAI access to hundreds of thousands of Nvidia graphics processors to train and run its artificial intelligence models. The deal underscores the AI industry’s insatiable appetite for computing power as companies...