Nvidia, an existing investor whose chips power OpenAI's AI models, is in talks to invest up to $US30 billion, The Information said, citing a person with knowledge of the situation.
Microsoft, a longstanding backer, is in talks to invest less than $US10 billion, the report said. It added Amazon, which would be a new investor, is in discussions to invest significantly more than $US10 billion, potentially even more than $US20 billion.
OpenAI is close to receiving term sheets, or an investment commitment, from these firms, the report said.
Nvidia, Amazon, Microsoft and OpenAI did not immediately respond to Reuters' requests for comment outside regular business hours.
Reuters could not immediately verify the report.
Amazon's investment could depend on separate negotiations, including a possible expansion of OpenAI's cloud server rental deal with Amazon and a commercial agreement for OpenAI to sell its products, such as enterprise ChatGPT subscriptions, to Amazon, The Information said.
This follows reports from earlier this week that said that SoftBank Group is in talks to invest as much as an additional $US30 billion in OpenAI.
OpenAI is grappling with rising costs to train and run its AI models as competition from Alphabet's Google heats up.
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