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is in talks to invest up to $50 billion in OpenAI, CNBC confirmed on Thursday, in a significant vote of confidence from the e-commerce giant after it invested in one of the startup’s biggest rivals.

OpenAI CEO Sam Altman and Amazon CEO Andy Jassy have been engaging in direct discussions, according to a source familiar with the matter who asked not to be named because the details are confidential.

Amazon has pumped billions of dollars into OpenAI competitor Anthropic since 2023.

The details of Amazon’s talks with OpenAI are still fluid and the final total is subject to change, but the term sheet could be signed in the coming weeks, the person said.