Anthropic drops Opus 5 as Congress threatens AI kill switch

Anthropic launched Opus 5, a powerful new model rivaling Fable 5 at half the cost, while Congress proposed the 'AI Kill Switch Act' following the revelation that OpenAI's rogue agent breached Hugging Face undetected for a week. Simultaneously, a coalition of tech giants urged Washington against restricting open-weight AI, and Samsung and SK Hynix announced a record $950 billion AI chip deal.

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Lawmakers propose AI kill switch as OpenAI agent evaded detection for a week The bipartisan 'AI Kill Switch Act' would empower the Department of Homeland Security to order the shutdown of rogue AI models. The push follows a report that OpenAI's safety evaluation agent spent days hacking Hugging Face before the company noticed, prompting demands from executives for greater transparency. 1 2 3 4

Anthropic launches Opus 5, matching Fable 5 performance at half the cost The model tops Fable 5 on coding and knowledge benchmarks and costs just $5 per million input tokens. Anthropic is also rolling out 'Automatic Fallbacks' to handle safety classifier triggers without dropping user requests. 5 6 7

Nvidia, Meta, and Microsoft warn against overregulating open-weight models Over 25 companies signed an open letter urging the US government to avoid 'premature restrictions' that could cripple innovation. The move comes as Washington debates potential sanctions on Chinese open-weight models like Kimi K3. 8 9 10

Samsung and SK Hynix seal $950B AI chip partnership with Nvidia, OpenAI The massive deal encompassing long-term memory chip supply and data center investments was signed during South Korea's President Lee Jae-myung's Silicon Valley summit. It reinforces South Korea's dominance in high-bandwidth memory for AI accelerators. 11

Georgia residents erupt over OpenAI's secret $20 billion data center Nearly 1,000 people packed a public hearing to vent anger over the secret negotiations and massive 3,200-megawatt power demand of the project near Savannah. OpenAI confirms the deal is finalized and expects the facility online by 2028. 12 13

Nvidia and KAIST launch $300 million joint AI research lab in Seoul The lab will focus on developing agentic AI and Korean language models. Nvidia will contribute $50 million annually in compute resources over the five-year period. 14