Thanks! Right now Chorus is proxying API calls to our server so it's free. This was kind of an experimental winter break project that we were using internally, and it was quicker to ship this way.
Likely going to add bring your own API keys (or a paid version) soon.
Update: just added option to bring your own keys! Should be available within an hour.
ahah true, but in this case, we're (melty) just paying right now. I wanted to make it really easy to try and didn't implement bring your own keys yet. I probably should ask O1 to fix that