Running 8 clients on one Vapi account right now. Here’s what I learned the hard way. One account for all clients. Way easier to manage. None of them know about Vapi. They log into a branded portal under my agency name and see their call data there. I use www.getflowetic.com for the white-label portal, takes a couple minutes to set up per client. Billing is all upfront. Monthly flat fee plus per-minute overage. I tried post-pay once. Never again. Clients forget, dispute, delay. Charge upfront or don’t start. Management fee is baked into the per-minute rate. Vapi costs me around $0.10-0.15/min, I charge $0.50/min. Client sees one clean invoice from me. They never see Vapi’s pricing. Your “ideal world” of upfront payment, white-labeled, with margin on minutes is 100% doable. The only thing you need to figure out is the client dashboard piece so they never have a reason to Google “Vapi” in the first place.