I use it. It’s solid and I like the company.

I daily use the free tire of Le Chat and it is perfect for my needs, like creating TLDR summaries of articles.

In case someone else was interested about the company behind it (went to look where it is from):

We are Mistral AI, a pioneering French artificial intelligence startup founded in April 2023 by three visionary researchers: Arthur Mensch, Guillaume Lample, and Timothée Lacroix.

Edit: sorry OP I didn’t have any prior experience to comment about.