Seat pricing
The seat fee is just the door: one major AI product's enterprise seat leads with $20 but lands at $34–43 all-in once the add-on license maze is counted — and usage bills at API rates above that.
Compare billing units before comparing prices — per-seat, per-minute, per-token, and per-unique-caller all reward different usage patterns, and the cheapest sticker is rarely the cheapest tool.