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

Anthropic has launched two more Claude AI models: Claude Sonnet 4 and Claude Opus 4.

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

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New Claude 4 AI model refactored code for 7 hours straight

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

Anthropic says that the models set "new standards for coding, advanced reasoning, and AI agents."

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Anthropic says its new AI model can work almost an entire workday straight

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

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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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.

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.