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What’s Improved in AI Models Sonnet & Opus

Anthropic Launched New Claude 4 Gen AI Models. Here's What They Do

The latest versions of Anthropic's Claude generative AI models made their debut Thursday, including a heavier-duty model built specifically for coding and complex tasks.Anthropic launched the new Claude 4 Opus and Claude 4 Sonnet models during its Code with Claude developer conference,

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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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Claude 4 Debuts with Two New Models Focused on Coding and Reasoning

Claude Opus 4 is designed for coding among other tasks, and it offers sustained performance for complex, long-running tasks and agent workflows.

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

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

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 running independently for 7 hours with sustained performance," Anthropic said in a news release.

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Claude 4 Tests the Boundaries of Goal-oriented AI

Anthropic's newest editon of its flagship AI product will address significant limitations in current large language models.

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Claude Sonnet 4: Key Features and Application

Claude Sonnet 4 boosts coding, reasoning, and agent capabilities with enhanced memory, speed, and steerability across major dev platforms.

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 range of professional and academic tasks beyond code generation. According to Anthropic, Claude Opus 4 is optimized for extended, focused sessions that involve complex reasoning, context retention and tool use.