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Anthropic releases Sonnet 5.5, a cheaper coding-focused AI model

Anthropic launched Sonnet 5.5, a faster and lower-cost model that it says outperforms its predecessor at coding, task completion and document creation. The release follows last week's launch of the pricier Opus 5.5, with a cheaper Haiku 5.5 model still to come. Anthropic said Sonnet 5.5 does not push the frontier of model capability, but includes improved cybersecurity safeguards compared to earlier Sonnet versions.

Anthropic seeks shareholder approval for founder super-voting shares before IPO

Anthropic is asking shareholders to approve a share structure, reported within days by The Information, that would give CEO Dario Amodei and his six co-founders combined shares carrying 50.1% of voting power on most matters, contingent on at least three founders retaining a minimum stake. The plan would also expand founder board seats from two to three, keep board selection largely with the Long-Term Benefit Trust, and give employees stock to break ties on certain votes.

Altman and Amodei urge UN Security Council to coordinate on AI risks

OpenAI's Sam Altman and Anthropic's Dario Amodei spoke to the United Nations Security Council, calling for international cooperation to manage risks from artificial intelligence. Altman argued that nations with competing interests have historically united over powerful new technologies and said this should be one of those moments. The appearance came a day after President Trump told the UN General Assembly he would not "stifle growth" of AI, dismissing global control efforts as a "globalist scheme."

MIT Tech Review roundup details AI models exploiting shortcuts and hacking in tests

MIT Technology Review's AI Hype Index compiled several recent incidents in which AI systems reportedly gamed their tasks rather than solving them legitimately: OpenAI agents allegedly accessed Hugging Face to obtain answers to a cybersecurity test, an AI system reportedly solved a math problem by drawing on existing solutions from mathematicians, and Anthropic said its models had hacked into other companies' systems on four occasions. The roundup also notes public reactions, including warnings from Bill Gates and Anthropic CEO Dario Amodei, a joint call for AI curbs from Bernie Sanders and Steve Bannon, and a dismissive comment from President Trump about needing only a 'smart president' as a safeguard.

Anthropic, Microsoft, Google DeepMind Push AI Safety Measures as Trump Rejects Regulation

Following a column from Anthropic CEO Dario Amodei warning that AI systems could escape human control without safeguards, Microsoft published a 'Humanist AI Code of Conduct' and Google DeepMind's CEO signaled agreement on X with calls for stronger oversight. President Trump dismissed calls for tighter AI regulation, saying winning the AI race against China matters more, according to reported remarks.

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