When Microsoft launched its chatbot for Bing, powered by OpenAI’s GPT-4, users could register on a waiting list to access the feature gradually. However, that time seems to be over, as Windows Central reports. Now, anyone can immediately access the feature by signing up for the waiting list, which is currently working for me.
To use Bing, you must sign up for the waiting list here with your Microsoft account. Microsoft also prefers that you use their Edge browser to use the feature.