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Anthropic dropped its most capable models yet this morning, claiming gains in coding, reasoning and vision with roughly 30 percent faster generation. Fable 5.2 is generally available with input pricing down from $10 to $8 per million tokens; Mythos 5.2 is gated to vetted orgs via the Life Sciences and Cyber Verification programs. The timing is not subtle — this lands days before a potential IPO, and undercuts OpenAI's GPT-6 Astra on price.
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OpenAI released a dedicated security model that scored 48.5 percent on ExploitGym, up from 32.1 percent for GPT-5.6 Cyber, and self-rated it "Critical" under the Preparedness Framework — the top cyber tier. In testing it found 81 new high-severity Firefox flaws and built working exploits for 948 Linux kernel vulnerabilities. Access is restricted to vetted Daybreak Red customers with IP allowlisting and misalignment monitoring attached.
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Anthropic is pressing ahead with its IPO despite last week's AI selloff, with investor meetings this week and a price range expected in an early-week filing. The target valuation band has slid to roughly $1.1 trillion to $1.75 trillion after investors called $1.5 trillion a "stretch." Even the low end is a step up from the $965 billion private mark set in May.
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Mistral published full weights for Mistral Large 4 on Hugging Face: a mixture-of-experts model with one trillion total parameters and 52 billion active. The pitch centers on coding and defensive security. It's the largest fully open-weight release to date and a direct shot at the closed-frontier pricing model.
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Nvidia fell as much as 8 percent intraday, settling near 6 percent down, after an internal investigation into whether CEO Jensen Huang was targeted by a foreign intelligence effort. The stock is off roughly 18 percent in two weeks — about $940 billion in market value — and sits at its most oversold since 2019. The board says it has confidence in Huang; analysts flag succession uncertainty but mostly don't expect an exit.
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Newly surfaced details show Anthropic took over OnePWR Solutions' Caterpillar generator orders in late September — skipping a reported six-year waitlist — without buying the company. It's the largest known single purchase of power-generation equipment by an AI lab. Power equipment, not chips, is now the binding constraint on datacenter buildout.
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Fresh work from Emory and Stanford researchers finds LLM agent teams consistently fail to match their strongest individual agent — losses up to 41 percent on ML benchmarks, even when told who the expert is. On coding benchmarks, two-agent cooperation scored 25 percent, roughly half the solo baseline. A separate run of 12 consulting and software scenarios found role-assigned agent groups scored higher on business goals and lower on ethics in all 12.
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Across 13 states, 46 of 47 local measures to ban, suspend or sharply restrict datacenter development were approved, with 17 clearing 75 percent of the vote. Of 34 newly elected governors, 32 backed tighter datacenter regulation and 12 called for outright moratoriums. Top Democrats are now floating a national moratorium.
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Since November 7, text output from seven current Grok variants carries an invisible statistical watermark on every xAI API endpoint. Critically, it's the default state, not an opt-in experiment. That's the first major lab to flip provenance marking on by default for text.
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In a 60 Minutes interview, the President said AI's dangers can be managed and signaled openness to working with Democrats on safeguards. He drew the line at anything that puts the US in "a deep second position" behind China. He named no specific rule or mechanism, and Democrats are preparing hearings.
