OpenAI and Amazon have signed a $US38 billion deal that enables the ChatGPT maker to run its artificial intelligence systems on Amazon's data centres in the US.

OpenAI will be able to power its AI tools using "hundreds of thousands" of Nvidia's specialised AI chips through Amazon Web Services as part of the deal announced.

The seven-year agreement comes less than a week after OpenAI altered its partnership with its longtime backer Microsoft, which until early this year was the startup's exclusive cloud computing provider.

California and Delaware regulators also last week allowed San Francisco-based OpenAI, which was founded as a nonprofit, to move forward on its plan to form a new business structure to more easily raise capital and make a profit.

"The rapid advancement of AI technology

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