Yesterday, I spent 4.5hrs crafting a very complex Google Sheets formula—think Lambda, Map, Let, etc., for 82 lines. If I knew it would take that long, I would have just done it via AppScript. But it was 50% kinda working, so I kept giving the model the output, and it provided updated formulas back and forth for 4.5hrs. Say my time is $100/hr - that’s $450. So even if the new ChatGPT Pro mode isn’t any smarter but is 50% faster, that’s $225 saved just in time alone. It would probably get that formula right in 10min with a few back-and-forth messages, instead of 4.5hrs. Plus, I used about $62 worth of API credits in their not-so-great Playground. I see similar situations of extreme ROI every few days, let alone all the other uses. I’d pay $500/mo, but beyond that, I’d probably just stick with Playground & API.