Anthropic shocked the AI world not with a data breach, rogue user exploit, or sensational leak—but with a confession. Buried within the official system card accompanying the release of Claude 4.0, the company revealed that their most advanced model to date had,

Bowman later edited his tweet and the following one in a thread to read as follows, but it still didn't convince the naysayers.

Claude Opus 4 is the world’s best coding model, Anthropic said. The company also released a safety report for the hybrid reasoning models.

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 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.

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

Anthropic Claude 3.5 and 3.7 have been the leading models for coding. They were being threatened by Google Gemini 2.5 but now Claude 4 Sonnet and Opus are

Artificial intelligence startup Anthropic says its new AI model can work for nearly seven hours continuously, further signaling AI’s growing presence in the workplace.