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

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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’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’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

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.