Claude 4 AI Model Launch

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What’s Improved in AI Models Sonnet & Opus

Claude Sonnet 4 and Claude Opus 4 Launch: Anthropic introduces latest AI models with enhanced coding & reasoning capabilities

Today, on 22 May 2025, Anthropic introduced the next generation of Claude models: Claude Opus 4 and Claude Sonnet 4. These models are setting new standards for coding, advanced reasoning, and AI agents.

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

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

New Claude 4 AI model refactored code for 7 hours straight

In particular, that marathon refactoring claim reportedly comes from Rakuten, a Japanese tech services conglomerate that "validated [Claude's] capabilities with a demanding open-source refactor ...

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

Anthropic's most powerful model yet, Claude 4, has unwanted side effects: The AI can report you to authorities and the press.

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Anthropic launches Claude 4, its most powerful AI model yet

Anthropic, the Amazon-backed OpenAI rival, on Thursday launched its most powerful group of AI models yet: Claude 4. It ...

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Claude Opus 4 is here — and it might be the smartest AI assistant yet

Anthropic has announced the release of its latest AI models, Claude Opus 4 and Claude Sonnet 4, which aim to support a wider ...

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