I've been using it for the last month, especially on those days that ChatGPT is down.

Apparently it's based on GPT3 rather than ChatGPT's 3.5, but it's still very usable. It isn't quite as good as ChatGPT at refining an idea through back-and-forth chat but I like it more than the Openai Playground.

Added bonus - very few restrictions, and it's pretty hard to get it to moralize at you.