Microsoft said the rebrand will “unify the Copilot experience” what ever that means.

"Our efforts to simplify the user experience and make Copilot more accessible to everyone starts with Bing, our leading experience for the web. Beginning today, Bing Chat and Bing Chat Enterprise are becoming Copilot, with commercial data protection enforced when any eligible user is signed in with Microsoft Entra ID," the company said.

So, Bing is no longer "your AI-powered copilot for the web." However, Microsoft Bing will still provide a combined Search and chat experience. Heading forward, it will just be called CoPilot.

Anyone who does not want their experiences combined can use CoPilot at its own standalone ChatGPT-style experience at https://copilot.microsoft.com/.

The whole plan is confusing because Microsoft's chatbot "companion" is used across multiple apps, including Microsoft 365, Edge, Windows, and more -- some free, some not. In addition to Bing Chat, Bing Chat Enterprise is rebranded as Copilot Pro.

It offers the same chat functionality with greater commercial data protection for Microsoft 365 subscribers.