I find https://ai.google/ to be the most attractive. This is because I've seen Google’s AI Duet lets you make music with a virtual pianist: https://www.theverge.com/2017/2/...
- No the most impressive, but I've been having lots of fun playing with Hugging Face. It feels very human without trying to be. It's so engaging I found myself chatting with it for over half an hour.