Amazon launched a preview of OpenAI's models on its Bedrock platform less than 24 hours after Microsoft's exclusivity ended, expanding cloud options for enterprise customers. The partnership builds on a February deal that saw OpenAI commit to run workloads on Amazon's custom Trainium chips and a cloud agreement worth more than $100 billion over eight years. In February, Amazon and OpenAI struck a $50 billion investment and cloud deal, while Amazon also announced a $25 billion investment in Anthropic and a similar $100 billion-plus cloud commitment. Amazon's custom silicon business is generating over $20 billion a year, and the company plans $200 billion in capital expenditures this year, largely on AI infrastructure. During the event, Amazon CEO Matt Garman said that "their production applications run in AWS. Their data is in AWS. They trust the security of AWS, and we've forced them for the last couple of years, to get great OpenAI models, to go to other places." OpenAI CEO Sam Altman noted that "the opportunity ahead of us is enormous, and the most exciting part is that this is not something in the future — it's starting right now." Denise Dresser, OpenAI's chief revenue officer, added that the hundreds of enterprise customers she has met are past the experimentation phase and want powerful models in a trusted environment.