Guide · AI Receptionists
Per-location billing is the single biggest cost multiplier for multi-site AI phone vendors
Slang.ai bills its flat plans per location, so a three-restaurant group pays three times the sticker price while a flat brand-level plan stays put — here's what that does to your bill at 3 and 5 sites.
If your business has more than one front desk, the number on a vendor’s pricing page can quietly mean two completely different things: a price for your brand, or a price for each location. That distinction is the largest single lever on a multi-site AI phone bill in our dataset — larger than minutes, overage, or tier.
The clearest example is Slang.ai. Both of its published plans — Core at $399/mo and Premium at $599/mo — are billed per location. So the sticker price isn’t your bill; it’s your bill times your store count.
What per-location billing does at 3 and 5 sites
Here is the same Slang.ai pricing run out against a flat, brand-level competitor. Loman — also a restaurant-vertical vendor — charges $199/mo (Starter) or $399/mo (Premium) flat, with no per-minute fees and no per-location language on its page.
| Sites | Slang.ai Core ($399/loc) | Slang.ai Premium ($599/loc) | Loman Starter ($199 flat) | Loman Premium ($399 flat) |
|---|---|---|---|---|
| 1 | $399 | $599 | $199 | $399 |
| 3 | $1,197 | $1,797 | $199 | $399 |
| 5 | $1,995 | $2,995 | $199 | $399 |
At a single site, Slang.ai Core ($399) and Loman Premium ($399) are the same number. At three locations they are not remotely the same product: a three-restaurant group on Slang.ai’s Core plan pays $1,197/mo, and on Premium $1,797/mo, while Loman’s flat plan still reads $199–$399 for the whole brand. By five sites the Premium gap is $2,995/mo vs. $399/mo — a roughly 7.5x spread driven entirely by the billing unit, not by features or call volume.
One more line item compounds this on Slang.ai: Spanish is included on Premium but a $99/mo add-on on Core — and on a per-location plan that add-on plausibly recurs per location too, widening the gap further for a bilingual group.
Flat means flat — confirm what it covers
The honest caveat is that “flat” is only an advantage if a single account legitimately covers multiple phone numbers and locations. Loman’s plans carry no per-location language and no usage overage, but they also don’t publish a hard multi-location cap, so a large group should confirm in writing that one subscription answers every number.
Two other flat vendors in the dataset make the multi-number capability explicit rather than implied:
- NextPhone — Pro $199/mo, Growth $299/mo, both flat with unlimited inbound calls and no per-minute fees. Unlimited usage means the cost is volume-independent; the open question for a chain is purely how many numbers one plan covers.
- Trillet — sells the multi-site case directly through sub-accounts: Studio at $99/mo includes 3 phone numbers and 3 sub-accounts, and Agency at $299/mo moves to 10 numbers and unlimited sub-accounts (with $0.12/min overage above the 100/300 included minutes). For an operator who wants per-location separation without per-location pricing, that is the structural opposite of Slang.ai.
How to read this
Per-location billing isn’t inherently bad — it scales support and provisioning with your footprint, and at one site it’s invisible. But it is the one pricing term that turns a $399 sticker into a near-$2,000 bill without a single extra minute of talk time. Before you compare AI phone vendors on price, establish the unit: is this number per brand or per door?
For a multi-location restaurant group specifically, that single question reorders the field. Slang.ai’s $1,197–$1,797/mo at three sites and $1,995–$2,995/mo at five is the cost of a per-location model; Loman’s $199–$399 flat, NextPhone’s $199–$299 unlimited inbound, and Trillet’s sub-account structure are what brand-level billing looks like. Same market, same vertical — and a difference measured in thousands of dollars a month that lives entirely in how the line item is counted.