I’ve been using it for a while now, and my experience is-

It’s fast but 95% of the time the results are worse than the other 3.

My recommendation -

1. Claude 2 is usually better than chatgpt4. Check out Claude.ai and poe.com.

2. chatgpt4 has been nerfed. I would suggest not paying for it until it improves.

3. bing can be good - I use it as my primary ai chat for.live internet queries, then add bard if need be.