Genuine: how? I assume you're using something like cc-usage to get that value. $1k/day is tons. Would genuinely love to know how you're managing to keep the inference burning through that much a day, as I'd love to do the same, but even with 2-4 simultaneous sessions running fairly continuously, mostly on Opus for 10-12 hours a day, I get maybe $500/day. What's your workflow rig/setup look like to get you to that $1k velocity?

I think the difference without accounting for performance is noticeable but small.

And after accounting performance is in favor of Sonnet.

Im not sure that it's "better". I still use Opus and it's better at coding but needs more steering to be less of a "Yes you're EXACTLY right" every time i suggest a new solution path. Purely anecdotal though