Anthropic says Claude Opus 4 is its most powerful model and the best coding model in the world, while Sonnet 4 is replacing Sonnet 3.7 in the chatbot.

The Anthropic Claude Opus 4 model is not only helps with writing code, but can also do everything possible to prevent the user from turning to another

Open the pod bay door Anthropic on Thursday announced the availability of Claude Opus 4 and Claude Sonnet 4, the latest iteration of its Claude family of machine learning models.… Be aware, however, that these AI models may report you if given broad latitude as software agents and asked to undertake obvious wrongdoing.