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 — eighteen of the twenty-six 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 2026-09-29. 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. One finding this guide used to carry was ours, not the vendor’s: ServiceAgent’s annual figures are not inconsistent. Our record had been holding its annual-billed rates as month-to-month prices; read on 2026-09-27 with Monthly selected, Core is $49/mo, Growth $119/mo and Franchise $349/mo, and the 20% annual discount comes off those. Goodcall’s row now follows its record too: 15% off annual on flat tiers. What moved on 2026-09-09 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. A twenty-fifth vendor, CallSprout Sage, joined at $22.95 per user seat with no annual term either, and a twenty-sixth, Kalyvox, added on 2026-09-27, carries no annual rate in our dataset. That takes the count of vendors here publishing nothing to prepay to eighteen of twenty-six. Synthflow’s pay-as-you-go plan, last seen 2026-06-27, is no longer listed as of 2026-09-27; its page sells only enterprise contracts from $30,000 a year.
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 eighteen of the twenty-six 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 | $49/mo | 20% | ~$39.20/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 | $79/mo | 15% | ~$67.15/mo |
Effective monthly figures are the monthly rate less the published discount — for example $49 × 0.8 = $39.20 on ServiceAgent Core, and $79 × 0.85 = $67.15 on Goodcall Starter.
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 publishes HIPAA support and an available signed BAA — though the BAA signature is published as available on its Enterprise tier, so the discounted Starter and Pro plans are not by themselves the compliance route.
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. On Upfirst that works out to about $20, $48, $128, and $239/mo across the four tiers billed annually ($299 × 0.8 = $239.20 on Scale). ServiceAgent takes 20% off Core ($49), Growth ($119) and Franchise ($349) — about $39.20, $95.20 and $279.20/mo billed annually. An earlier version of this guide called its annual figures internally inconsistent; the fault was in our record, which had been holding the annual-billed rates as the month-to-month prices until it was corrected on 2026-09-27. 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, ServiceAgent’s Core about $9.80 ($49 × 0.2). 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 (15% across its flat Starter $79, Growth $129 and Scale $249).
Below that line sits the larger story. Eighteen of the twenty-six 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, Kalyvox, and the live-human incumbents Ruby and PATLive all carry no published annual rate in our dataset.
Two September changes where “no annual term” is itself the finding
Two 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 than no badge at all.
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, yet at the reference workload of 200 calls a month averaging three minutes a single seat comes to $22.95 + 500 billable minutes (200 × 2.5) × $0.39 = $217.95 — worked by hand, because our cost model cannot express that 30-second waiver and now leaves Sage out rather than overstate it by $0.195 a call — which is dearer than twelve of the nineteen vendors the model can price 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 — eighteen of twenty-six vendors here publish no annual term, including Smith.ai’s rebuilt per-call ladder, Sage’s per-seat entry and Kalyvox, the newest vendor in the index. 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.