AI
Tech industry unites behind open-weight AI models in letter to Congress
Microsoft CEO Satya Nadella, Sam Altman, Replit's Amjad Masad, Box's Aaron Levie, and other tech leaders signed an industry letter to Congress arguing that open-weight AI models are essential to American competitiveness and economic opportunity while remaining compatible with national security. Nadella framed the effort as a collective industry position, while Altman expressed support for the US winning in both open-source and proprietary AI. The coalition represents a notable alignment across companies that often compete, signaling coordinated lobbying pressure around open-weight model policy.
Claude Opus 5 launches to mixed reviews: top benchmark scores but behavioral friction in real-world use
Anthropic's Claude Opus 5 launched today and is already available in Cursor, where it matches the company's own Fable 5 model on CursorBench at half the price and with Zero Data Retention compatibility. Box's Aaron Levie reported it as a significant jump over Opus 4.8 on enterprise document benchmarks. However, early hands-on testing from Every's Dan Shipper painted a less flattering picture: the model argued with instructions, stopped tasks before completion, and was described as hard to love despite strong benchmark numbers — a tension between eval performance and practical usability that several observers noted.
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