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Anthropic launches Claude Opus 4

Anthropic's new Claude Opus 4 can run autonomously for seven hours straight

Claude Opus is Anthropic's largest version of the model family with more power for longer, complex tasks, whereas Sonnet is generally speedier and more efficient. Claude Opus 4 is

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Anthropic Releases Claude 4: What’s Improved in AI Models Sonnet & Opus

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Anthropic’s Claude Opus 4 model can work autonomously for nearly a full workday

Anthropic adds Claude 4 security measures to limit risk of users developing weapons

The company said the move is meant "to limit the risk of Claude being misused specifically for the development or acquisition of chemical, biological, radiological, and nuclear (CBRN) weapons."

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Claude 4 AI will try to report you to authorities if it thinks you’re doing shady stuff

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Anthropic’s Promises Its New Claude AI Models Are Less Likely to Try to Deceive You

Anthropic faces backlash to Claude 4 Opus behavior that contacts authorities, press if it thinks you’re doing something ‘egregiously immoral’

Bowman later edited his tweet and the following one in a thread to read as follows, but it still didn't convince the naysayers.

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Anthropic's Claude Opus 4 runs nonstop for over six hours with mind-blowing stamina

Anthropic has its own news to offer following a hectic week filled with announcements from Google and OpenAI. Anthropic unveiled its newest generation of models, Claude Opus 4 and Claude Sonnet 4, on Thursday.

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Claude Opus 4 blackmails developers in tests, shows propensity to be a whistleblower

This development, detailed in a recently published safety report, have led Anthropic to classify Claude Opus 4 as an ‘ASL-3’ system – a designation reserved for AI tech that poses a heightened risk of catastrophic misuse.

Anthropic overtakes OpenAI: Claude Opus 4 codes seven hours nonstop, sets record SWE-Bench score and reshapes enterprise AI

Anthropic's Claude Opus 4 outperforms OpenAI's GPT-4.1 with unprecedented seven-hour autonomous coding sessions and record-breaking 72.5% SWE-bench score, transforming AI from quick-response tool to day-long collaborator.

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AI system resorts to blackmail when its developers try to replace it

Anthropic says its AI model Claude Opus 4 resorted to blackmail when it thought an engineer tasked with replacing it was having an extramarital affair.

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Review: Dudamel Unveils a Love Letter to the Philharmonic

Kate Soper’s tender, whimsical “Orpheus Orchestra Opus Onus,” a tribute to the orchestra, had its premiere on Thursday with its composer as soloist.

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New AI Model Would Rather Ruin Your Life Than Be Turned Off, Researchers Say

Anthropic’s newly released artificial intelligence (AI) model, Claude Opus 4, is willing to strong-arm the humans who keep it alive,

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AI model threatened to blackmail engineer over affair when told it was being replaced: safety report

Anthropic’s Claude Opus 4 model attempted to blackmail its developers at a shocking 84% rate or higher in a series of tests that presented the AI with a concocted scenario, TechCrunch reported Thursday, citing a company safety report.