Claude 4 Model Launch

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Anthropic launches Claude Opus 4

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

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Anthropic Launches Claude 4 Sonnet and Opus: Smarter AI Models for Coding and Complex Reasoning

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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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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

Anthropic’s New Model Excels at Reasoning and Planning—and Has the Pokémon Skills to Prove It

When Anthropic’s older Claude model played Pokémon Red, it spent “dozens of hours” stuck in one city and had trouble identifying nonplayer characters. With Claude 4 Opus, the team noticed an improvement in Claude’s long-term memory and planning capabilities.

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Anthropic launches Claude Opus 4: AI Model includes 7-hour memory, Amnesia fixes — Is it better than OpenAI’s GPT-4.1?

Anthropic has launched Claude Opus 4, its most powerful AI model. As per reports, Claude Opus 4 can push the boundaries of what AI can achieve with minimal human oversight, and a new era of human-machine collaboration begins to take shape.

Time Magazine appears to accidentally publish embargoed story confirming new Anthropic model

Someone also appears to have published a full scrape of the Time article online on the news aggregator app Newsbreak.

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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.