STORY: The deal marks OpenAI’s first major step to strengthen its AI ambitions following a restructuring last week that gave the ChatGPT maker greater operational and financial freedom.The deal also marks a major vote of confidence in the e-commerce giant’s cloud unit, Amazon Web Services, which some investors fear is falling behind rivals Microsoft and Google in the AI race.Overall, Miller said it’s another sign that big companies are saying AI investment “is going to cost us a pretty penny, and that’s totally OK.”