Typo in model name & system messages

[skyne98]

Hi! Thanks for the wonderful crate :)

A couple of things which I have encountered during my testing (and why I had to have a local copy of the crate):

1. open-mixtral-8x7b is spelled like open-mistral-8x7b and doesn't work
2. There is no support for system messages out of the box (it seems?) so I had to add one!
3. Finish reason "length" is not supported

Otherwise, amazing work!

[ivangabriele]

@skyne98 Thanks for the feedback! The open-mixtral-8x7b is an easy fix I'll add today. And I'll implement the system message which seems like a must-have indeed.

As for the finish reason length I'm not sure I understand what it represents. I know the finish reason prop and what't its purpose, it's just the "length" part that confuses me.

[skyne98]

That finish reason is provided when your request ends due to the "max tokens" limitation (prop) 👀