Yes, I used the link you gave me. I tried two different ways to sign up but a phone number is required at the end. I don’t like giving it as it is like giving access to my whole pedigree through the web.I don’t recall entering my phone number, but I created an account ages ago, so I suppose it’s possible. The replies are instantaneous. It’s just like texting with a friend or using a customer service chat window.
Is this the page you’re setting up your account from? https://chat.openai.com/auth/login
The company is called OpenAI: OpenAI
The chat feature is called ChatGPT.