Synthflow pricing: one plan, from $30,000 a year
Synthflow publishes one price: Enterprise contracts start at $30,000 a year. Everything past that floor is scoped with the sales team around your call volume, concurrency, telephony setup, integrations, security needs and launch support.
If you've seen a cheap monthly Synthflow plan on a review site, check the date on it. The page we read on synthflow.ai/pricing on 24 September 2026 shows one entry, Enterprise, and a Contact Sales button.
Spread across twelve months, the floor is $2,500 a month before scoping. That's a platform price for teams building voice agents at scale, and it sets the budget line you'd compare anything else against.
Synthflow, what the pricing page shows
| Item | What Synthflow publishes |
|---|---|
| Plan | Enterprise only |
| Entry price | Contracts from $30,000 a year |
| What sets the final price | Call volume, concurrency, telephony setup, integrations, security needs, launch support |
| Per-minute or per-call rate | Set inside each contract |
| Telephony | Synthflow native telephony, SIP trunking or approved enterprise telephony |
| Contract terms | SLA and support terms, MSA/DPA support, scoped per contract |
| How to buy | Contact Sales |
Read on synthflow.ai/pricing, September 2026 (checked 2026-09-24). The $30,000 annual floor is the only figure in the page's HTML.
What moves a Synthflow contract
- Call volume, which Synthflow names first among its scoping factors.
- Concurrency, meaning how many conversations run at once. Synthflow plans it per customer.
- Telephony. Bringing your own SIP trunk or enterprise carrier is part of the scope.
- Security review and launch support, which enterprise buyers usually ask for in writing.
Worked example
A regional home-services company answers 2,000 inbound calls a month and wants bookings written into Outlook.
Synthflow
contracts start at $30,000 a year, so at least $2,500 a month before the contract is scoped.
GreetKeeper Scale, monthly
$349 covers 2,000 answered calls. $349 × 12 = $4,188 a year.
GreetKeeper Scale, annual
two months free, so $3,490 for the year.
Extra calls past 2,000 on Scale
$0.25 each, printed on the pricing page.
Synthflow's floor for this company is $30,000 a year before scoping. GreetKeeper covers the same 2,000 calls a month for $3,490 a year on annual billing, with Outlook booking on the plan.
Where our own price sits
GreetKeeper is a ready-to-run AI receptionist with the price on the page. Starter is $49 for 200 answered calls, Professional $149 for 750, Scale $349 for 2,000, and annual billing gives two months free.
You pick a plan and forward your number to a dedicated local number that comes with it. GreetKeeper answers calls that arrive together, books into Google Calendar or Outlook, and sends a signed webhook on every call for the rest of your stack.
| Plan | Monthly | Calls included | After that |
|---|---|---|---|
| StarterFor a single location taking calls one line at a time. | $49 | 200 | $0.45 per call |
| ProfessionalBooking, routing and transfers included, not an add-on. | $149 | 750 | $0.35 per call |
| ScaleFor busy phones and longer opening hours. | $349 | 2,000 | $0.25 per call |
Before a Synthflow sales call
Have your monthly inbound volume and peak simultaneous calls ready, since those two numbers drive the scope.
Ask which telephony option the quote assumes, and what changes if you bring your own carrier.
Get the per-call or per-minute rate inside the contract in writing, along with what happens past the volume you signed for.
Every competitor figure on this page was read on that vendor's own pricing page in September 2026. Prices change. Check before you buy.
Questions people ask
How much does Synthflow cost?
Synthflow's pricing page says enterprise contracts start at $30,000 a year, as of September 2026. The final price is scoped around call volume, concurrency, telephony, integrations, security needs and launch support.
Does Synthflow have a monthly plan?
The pricing page we read on 24 September 2026 lists one plan, Enterprise, priced per annual contract. No monthly tier appears on it. GreetKeeper bills monthly from $49, or yearly with two months free.
How does Synthflow's floor compare with GreetKeeper's top plan?
GreetKeeper Scale is $349 a month for 2,000 answered calls, or $3,490 a year on annual billing, and extra calls are $0.25 each. Multi-location plans start from $299 per location.
How fast can a business start on GreetKeeper?
Sign up, pick your area code for a dedicated local number, and forward your line to it. Point GreetKeeper at your website for a first draft of your hours, services and FAQs, then correct it. Every plan starts with a 14-day free trial and no card.
Skip the scoping call
Every GreetKeeper plan and overage rate is on the pricing page. Start any plan free for 14 days.