I've been a subscriber since close to the beginning, cancelled 2 weeks ago. I got an email telling me that this is available, but only for Plus.
But for 30 posts per week I see no reason to subscribe again.
I prefer to be frustrated because the quality is unreliable because I'm not paying, instead of having an equally unreliable experience as a paying customer.
Not paying feels the same. It made me wonder if they sometimes just hand over the chat to a lower quality model without telling the Plus subscriber.
The only thing I miss is not being able to tell it to run code for me, but it's not worth the frustration.
I'm a ChatGPT subscriber.