Anthropic unveils Claude Opus 4 and Sonnet 4, featuring whistleblowing capability: What it means for users

Anthropic, the AI firm, has unveiled two new artificial intelligence models—Claude Opus 4 and Claude Sonnet 4—touting them as the most advanced systems in the industry. Built with enhanced reasoning capabilities, the new models are aimed at improving code generation and supporting agent-style workflows, particularly for developers engaged in complex and extended tasks.

“Claude Opus 4 is the world’s best coding model, with sustained performance on complex, long-running tasks and agent workflows,” the company claimed in a recent blog post.