Over 1,100 AI staffers signed a letter asking Washington to help pace frontier development. Wall Street got nervous as AI capex ballooned, Silicon Valley's backlash against Anthropic built over open weights, and the argument that this is all about recursive self-improvement either being right on the horizon, or a dead end.

• AI's finally expensive enough to make Wall Street nervous (The Verge)
• Over 1,100 staffers from AI companies, including John Schulman and OpenAI's Jakub Pachocki, sign a letter requesting the US government to "pace" AI development (Bloomberg)
• Signatories to the "Pacing the Frontier" statement include OpenAI's Mark Chen and Wojciech Zaremba and Anthropic's Jack Clark, Chris Olah, and Jared Kaplan, who say the world may need the option to buy time (The Verge)
• Anthropic faces backlash from Silicon Valley partners, founders, and researchers for competitive tactics, guardrails, and lack of support for open-weight models (WSJ)
• The Actual Reason Why Google "Fell Out" of the AI Race Changes Everything (The Algorithmic Bridge)

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