While you can't easily set ChatGPT Search as a default search engine in most browsers (which you maybe shouldn't do, anyway), you can still create shortcuts to quickly and easily search anything ...

But you can also set ChatGPT as the default search engine in your browser, so you receive ChatGPT's response to your query instead of Google search results.

Combine that with real-time access to the Internet, and you have a more efficient search engine. That's exactly what ChatGPT Search is -- and now you can make it your default search engine.