Very promising so far. I absolutely love that the game continues to run when it's in a background tab!
At the time of writing: Up top, where it says my "Typing Power:", that was showing my chars/key, but when I prestiged, it started showing my Typing Power level instead. The first time I prestiged, my Typing Performance stopped displaying correctly; my "Chars per Minute was stuck at zero, and my Typing Power was showing level instead of chars/key. (Something brought my Chars per Minute back since then, but I missed what made that happen) Typing Cost Reducer Agent works, but it doesn't do its thing when the green progress bar fills up. It does it at some arbitrary point when it's partway full (The spot changes every prestige. Maybe it's synched up to the very first Typing level I buy?). I think my code got less colorful when I bought my second Syntax Highlighting level (it took purple away?) and I suspect it's because my first level gave me a color it wasn't supposed to.
I like the fuscia glow that tells me I qualify for an upgrade, but I would like it a lot more if it would go away on its own, or calm down after a couple seconds, or something. (edit: Oh, I just noticed! there's an "Upgrades Pulse On" button! Nevermind.)
The second time I prestiged, I saw that every prestige upgrade costs a multiple of 5, and I thought, "Why not just divide all these costs by 5, and make it 5 times harder to earn points? Wait, why was I even allowed to prestige for only 3 the first time?" (You probably have something in mind for the future, though.)
The AI Assistant progress bar is weird, because it misleadingly hints that it's impactful in some way, and because you soon reach the point where you finish every file before the bar is even half full.
It would be nice if Statistics told me how many seconds it took me to type my last file (or last few files).
Likewise, it'd be nice if something told me what percentage of Chars are coming from typing versus from the AI Assistant. 'Cause I can tell when it becomes prettymuch a waste of time for me to keep typing, but I wanna know exactly how much of a waste of time it is!
Anyway, it's a fun game already, and I'm looking forward to future updates!