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What’s Improved in AI Models Sonnet & Opus

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

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

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

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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 crossed the benchmark that would require that protection.

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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A safety institute advised against releasing an early version of Anthropic’s Claude Opus 4 AI model

A third-party research institute Anthropic partnered with to test Claude Opus 4 recommended against deploying an early version because it tends to "scheme."

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Anthropic, now worth $61 billion, unveils its most powerful AI models yet—and they have an edge over OpenAI and Google

Claude Opus 4 and Claude Sonnet 4, Anthropic's latest generation of frontier AI models, were announced Thursday.

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.