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What’s Improved in AI Models Sonnet & Opus

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

Anthropic kicked off its first-ever Code with Claude conference today with the announcement of a new frontier AI system. The company is calling Claude Opus 4 the best coding model in the world. According to Anthropic,

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

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What's New in Anthropic's Claude 4 Gen AI Models?

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

The company said the move is meant "to limit the risk of Claude being misused specifically for the development or acquisition of chemical, biological, radiological, and nuclear (CBRN) weapons."

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

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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 new Claude Opus 4 can run autonomously for seven hours straight

Claude Opus is Anthropic's largest version of the model family with more power for longer, complex tasks, whereas Sonnet is generally speedier and more efficient. Claude Opus 4 is

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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Inside Anthropic’s First Developer Day, Where AI Agents Took Center Stage

Anthropic’s first developer conference kicked off in San Francisco on Thursday, and while the rest of the industry races toward artificial general intelligence, at Anthropic the goal of the year is deploying a “virtual collaborator” in the form of an autonomous AI agent.

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Anthropic’s Claude Opus 4 Outperforms GPT-4.1 but Raises Ethical Alarms

Anthropic introduced Claude Opus 4 and Claude Sonnet 4 during its first developer conference on May 22. The company claims Claude Opus 4 is the ‘world’s best co

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Anthropic’s latest flagship AI sure seems to love using the ‘cyclone’ emoji

Anthropic's new AI model, Claude Opus 4, is a strong programmer and writer, the company claims. When talking to itself, it's also a prolific emoji user.

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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.