Guide · AI Receptionists
Phonely's 33–34% annual discount is the biggest published in AI receptionists — most vendors publish none
Pay-annually savings range from a third off at Phonely down to nothing at all — seventeen of the twenty-five vendors in this index publish no annual term whatsoever — and the headline percentage matters less than what it does to the actual monthly number you pay.
Updated 2026-09-09. The ranking is unchanged — Phonely’s 33–34% is still the biggest published discount, and the 20% cluster (Upfirst, AIRA, ServiceAgent, My AI Front Desk) and 15–17% tail (Goodcall, NextPhone, Rosie) all still check out. What moved is the silence beneath them. Smith.ai replaced its entire tier ladder — Starter, Basic and the $800 “Pro” are gone; the page now sells Free, Pro and Enterprise, with the entry paid rung at $150 for 75 calls — and it still publishes no annual term, only per-call billing month-to-month. And a twenty-fifth vendor, CallSprout Sage, joined the index at $22.95 per user seat with no annual term either. That takes the count of vendors here publishing nothing to prepay to seventeen of twenty-five. Still standing from the 2026-06-22 pass: ServiceAgent’s annual figures are internally inconsistent — it badges “−20%” yet prints an annual per-month price above its monthly rate — Synthflow has dropped self-serve per-minute pricing for enterprise-only quotes, and Goodcall’s tiers are billed per agent with a “15% off” badge that computes to ~16.5%.
If you want the largest published discount for paying annually instead of monthly, the answer is Phonely: its Starter plan drops from $50/mo to roughly $33/mo (34% off) and its Pro plan from $150/mo to about $100/mo (33% off) on annual billing. No other vendor in our dataset publishes an annual rate within ten points of that. The next tier of vendors lands at 20%, then 15–17%, and seventeen of the twenty-five vendors in this index publish no annual rate at all — which, for a buyer, is the more important fact than any single percentage.
What the published discounts actually are
Annual savings are only meaningful where the vendor prints them. Eight vendors here do. Ranked by the discount applied to their entry plan, with the monthly-equivalent that discount produces:
| Vendor | Entry plan | Monthly rate | Annual discount | Effective monthly |
|---|---|---|---|---|
| Phonely | Starter | $50/mo | 34% | ~$33/mo |
| Phonely | Pro | $150/mo | 33% | ~$100/mo |
| Upfirst | Starter | $24.95/mo | 20% | ~$19.96/mo |
| AIRA | Starter | $24.95/mo | 20% | ~$19.96/mo |
| ServiceAgent | Core | $39/mo | ”−20%” ‡ | $49/mo ‡ |
| My AI Front Desk | Business-in-a-Box | $99/mo | 20% | $79/mo |
| Rosie | Professional | $49/mo | 17% | ~$40.83/mo |
| NextPhone | Pro | from $199/mo | up to 17% | ~$165.17/mo |
| Goodcall | Starter (per agent) | $79/mo | 15% † | $66/mo |
† Goodcall badges “15% off,” but the annual price it actually prints ($66 on Starter, $108 Growth, $208 Scale) is ~16.5% off the monthly rate; its tiers are billed per agent, not flat. ‡ ServiceAgent shows a “−20%” annual badge yet prints an annual per-month price ($49 on Core) above its $39 monthly rate — its on-page annual figures are internally inconsistent, so the real saving is unclear. We show the published annual number rather than a back-computed one.
Phonely is the outlier, and not by a little. Its 34% Starter discount and 33% Pro discount are the only figures in the dataset above 20%, and the vendor states the resulting numbers directly: ~$33/mo annual on Starter, ~$100/mo annual on Pro. (Phonely’s annual toggle badges both as “33% off”; the 34% is the exact Starter math, $50 down to $33.) Worth noting that Phonely is also one of the few vendors here that pairs a flat managed plan with HIPAA support and an available signed BAA — so the deepest discount happens to sit on a compliance-ready plan, not a bare-bones tier.
The 20% cluster, and a pricing-engine twist
Four vendors share the 20% line. Upfirst and AIRA apply it across their entire per-call ladder — Starter $24.95, Premium $59.95, Pro $159.95, Scale $299 — which is unsurprising once you notice these two publish byte-identical pricing tables and appear to run on the same pricing engine. Upfirst prints the annual numbers cleanly: $20, $48, $128, and $240/mo across the four tiers. ServiceAgent is the cautionary case: it badges “−20%” on its Core ($39), Growth ($95) and Franchise ($279) tiers, but the annual per-month prices it actually displays ($49, $119, $349) sit above the monthly ones — the page’s own discount math doesn’t survive contact with the numbers it prints, so take the badge with caution. My AI Front Desk is the cleanest case: its $99/mo Business-in-a-Box becomes a stated $79/mo on annual billing — the vendor prints the post-discount number rather than leaving you to compute it.
A 20% cut on a small base is real money in percentage terms but small in absolute terms: Upfirst’s Starter saves under $5/mo (and ServiceAgent’s badge, as noted, doesn’t even net out to a clean saving). Phonely’s 33% on the Pro plan, by contrast, is worth roughly $50/mo — the discount rate and the plan size both push the same direction.
The 15–17% tail, and the silence below it
The lowest published discounts come from Rosie (17%, framed as “2 months free” on its $49/mo Professional plan — note Rosie’s larger Scale and Growth tiers publish no annual rate), NextPhone (up to 17% on its $199 and $299 unlimited-inbound tiers), and Goodcall (a badged 15% that the printed annual prices — $66, $108, $208 — actually put nearer ~16.5%, across its per-agent Starter $79, Growth $129, Scale $249).
Below that line sits the larger story. Seventeen of the twenty-five vendors in this index publish no annual discount whatsoever. The per-minute developer platforms — Vapi ($0.05/min), Bland ($0.14/min all-in on Start), Retell AI ($0.07/min floor) — have nothing to discount annually, because there is no recurring subscription to prepay; you pay for minutes as you burn them. (Synthflow used to sit in this group at $0.09/min, but it has since dropped self-serve pricing entirely for enterprise-only quotes from $30,000/yr.) And several subscription vendors simply don’t print an annual rate: Smith.ai, Dialzara, Slang.ai, Thoughtly, Loman, ReceptionHQ, CallSprout Sage, and the live-human incumbents Ruby and PATLive all carry no published annual rate in our dataset.
The two September changes, where “no annual term” is itself the finding
Both of this month’s dataset changes landed in that silence, and both are worth stating plainly rather than leaving as an absence.
Smith.ai rebuilt its whole tier ladder, and the rebuild changed nothing about this question: there is still nothing to prepay. The page now publishes a Free tier ($0 for 25 real calls a month, then $3.00 per extra real call), three self-service Pro rungs — $150 for 75 calls, $270 for 150, $500 for 300 — and three sales-led Enterprise rungs at $500 for 300, $800 for 500, and a custom band above 1,000 calls with no published price. Billing is per call and month-to-month with 30 days’ notice, so a buyer weighing Smith.ai against the 20% cluster is weighing a discount against a cancellation right. Two cautions ride with those figures, because the old ones are still quoted widely: the entry paid price is $150 for 75 calls, not the $95 for 30 this record used to carry, and “Pro” now starts at $150 — the familiar “Smith.ai Pro at $800” names the wrong tier at the wrong price on the wrong purchase path, since $800 is now Enterprise, at 500 calls, sold through sales.
What Smith.ai offers instead of a prepayment discount is volume tapering: the per-extra-call rate falls from $3.00 on Free through $2.50 / $2.30 / $2.17 across the Pro rungs to $2.17 / $2.10 on Enterprise. The old flat $2.40 is gone and appears nowhere on the page. And it comes with its own badge problem, of exactly the kind this article keeps running into: on the $800 rung the card and the desktop table show an effective $1.60 per call with a “−4%” badge, the narrow-screen table badges the same rung −10%, and the page’s structured data says $1.50. $800 ÷ 500 = $1.60, so the visible figure reconciles and the badges do not — and none of the three is the $2.10 charged for calls beyond the bundle. A discount badge you cannot reproduce with the page’s own arithmetic is worth no more here than it was on ServiceAgent’s tiles.
CallSprout Sage, the twenty-fifth vendor in the index, publishes no annual term either: the words annual, yearly and per year appear nowhere on its pricing page, whose FAQ calls it “a simple per-seat price billed monthly.” Its Business plan is $22.95 per user seat per month and Call Center is $39.95 per user seat per month, both metering the Sage voice agent at $0.39 a minute after the first 30 seconds of each call, with no bundled minutes. Read the unit before the number: every other vendor on this page prices per business, so a five-person office pays $114.75 where the sticker says $22.95 — a multiplication that dwarfs any discount on this page. It is the lowest paid base price in the index and, at the reference workload of 200 calls a month averaging three minutes, it models around $257 — a modelled figure rather than a quote, since our cost model cannot express that 30-second waiver and so overstates by $0.195 a call — which ranks it fifteenth of the twenty-one vendors priceable at that volume.
How to read this
The biggest published annual discount in AI receptionists is Phonely’s 33–34%, which takes Starter to ~$33/mo and Pro to ~$100/mo. A 20% band — Upfirst, AIRA, ServiceAgent, My AI Front Desk — sits behind it, then Rosie, NextPhone and Goodcall at 15–17%. But the percentage is a trap if you read it alone: 20% off a $25 plan saves less than 33% off a $150 plan, and for the entire per-minute side of the market the question doesn’t apply at all. More often than not there is simply nothing to answer — seventeen of twenty-five vendors here publish no annual term, including both of September’s changes, Smith.ai’s rebuilt per-call ladder and Sage’s per-seat entry. The honest move is to fix the plan you’d actually buy, then check whether annual billing is even offered before you let the discount headline decide.