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Microsoft says that when integrated with OpenAI's GPT-5.4, its new cybersecurity model can beat Anthropic's new Mythos 5.

Critics have questioned why Anthropic didn't sign an industry letter last week in support of open-weight models.

"If you're borrowing money to buy something related to the data center, then tomorrow morning, 9:30 a.m., sell it no matter what," said CNBC's Jim Cramer.

CNBC's Jim Cramer said reports of Nvidia backing OpenAI's data center expansion revived memories of the financing arrangements that preceded the dot-com crash.

Nvidia had held the top spot as the most valuable company since June 2025, when it took the crown from Microsoft.

Crypto stocks proved some of the top gainers Monday even as the broader market sold off and capital rotated away from chip and AI infrastructure names.

The backstop would let OpenAI raise debt for a data center campus in Pike County, Ohio, on the strength of Nvidia's credit.

AI can't be regulated by the invisible hand of the market. We need a comprehensive future-focused regulatory framework.

The proposed network will partly rely on assets from Globalstar, which Amazon announced plans to acquire in April for roughly $11.6 billion.

Beginning in early 2027, YouTube Premium subscribers will receive the entirety of Peacock content, including sports and movies.