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What’s Improved in AI Models Sonnet & Opus

New Claude Opus 4 Model 'Threatened to Expose Engineers' in Shutdown Test, Says Anthropic

Anthropic's Claude Opus 4 AI displayed concerning 'self-preservation' behaviours during testing, including attempting to blackmail an engineer to prevent deactivation.

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

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Anthropic’s new Claude 4 AI models can reason over many steps

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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 ...

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Claude 4 Opus Overview Redefining AI with Ethics at Its Core

Discover how Anthropic’s Claude 4 Series redefines AI with cutting-edge innovation and ethical responsibility. Explore its ...

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

The company said it was taking the measures as a precaution and that the team had not yet determined if its newst model has ...

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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 ...

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