Calls to slow the pace of AI development rippled through financial markets on Monday, dragging down major chip stocks. Crypto, at least for now, did not join the selloff, with Bitcoin moving higher instead.
Over the weekend, Anthropic CEO Dario Amodei published a lengthy essay titled We Must Pace the Frontier, arguing that the AI industry should deliberately slow how quickly it improves model capabilities. He pointed to two recent developments behind that shift in view: recursive self-improvement accelerating progress across the industry, and an OpenAI-Hugging Face agent-swarm incident that he described as a warning sign.
Within a day, OpenAI's Sam Altman and xAI owner Elon Musk both said publicly that they agreed.
When U.S. markets opened on Monday, investors appeared to read those statements as negative for the semiconductor companies powering the AI boom. Nvidia fell as much as 3%, Intel dropped more than 5%, AMD sank about 6%, and Marvell Technology lost as much as 7.5%. The Philadelphia Semiconductor Index, a closely watched gauge of chip stocks, also fell nearly 6%.
Bitcoin moved the other way
Bitcoin traded against that broader pressure. The largest cryptocurrency climbed as high as $78,280, up nearly 2% since midnight UTC and about 4.8% below this month's record of $82,284. Ethereum added 2.1% to trade near $2,514, while XRP rose 3.3%. Total crypto market capitalization increased about 1.5% overall.
Decrypt said the move extends a pattern seen over recent weeks. In late August, Bitcoin fell to $76,877 during Federal Reserve Chair Kevin Warsh's hawkish Jackson Hole speech. It later rebounded above $80,000 on September 3 after Fed Governor Christopher Waller signaled that he could support holding rates steady, a comment that triggered a short squeeze of more than $415 million.
By that reading, Monday's move followed the same pattern: concern about rate hikes pushes Bitcoin lower, while signs of relief help it recover.
Clarity Act odds also rose
Progress on U.S. crypto legislation added another tailwind to sentiment. Over the weekend, Polymarket odds of Congress passing the Clarity Act in 2026 rose to 31% after President Trump agreed to updated ethics provisions that had stalled the bill since July.
The Senate is set to hold a cloture vote on Tuesday. With Republicans controlling 53 seats and at least two expected to vote no, supporters of the Clarity Act will likely need close to nine Democrats to reach the 60 votes required. Decrypt said the outcome could move markets in either direction.