Asisto vs Synthflow
A no-code voice AI agent builder, now sold as an enterprise product with contracted pricing.
The short answer
Synthflow is a no-code voice agent builder that has moved upmarket to enterprise contracts with an annual minimum. Asisto is a finished receptionist a small business can start on its own.
The honest read
Synthflow’s no-code builder is a real advantage if you want to shape an agent without engineers - agencies in particular get a lot from it. What has changed is who it is for: its published pricing is now a single enterprise tier with an annual commitment, scoped through a sales process around call volume, telephony and security review. For an enterprise deployment that is reasonable. For a clinic or a contractor, the floor alone rules it out, and Asisto is the comparison that makes sense.
Where Synthflow wins
- A no-code agent builder with more configuration depth than a purpose-built receptionist exposes.
- Enterprise implementation, security review and SLA terms as part of the contract.
- Flexible telephony, including bringing your own SIP trunking.
- A strong fit for agencies deploying agents across many client accounts.
Where Asisto wins
- Reachable by a small business: self-serve signup, no annual commitment, no sales cycle.
- Pricing published in full rather than scoped in a call.
- The phone system is included - numbers in 30 countries, routing, SMS, outbound dialer.
- Live in about ten minutes rather than through an implementation project.
Side by side
| Feature | Asisto | Synthflow |
|---|---|---|
| Answers calls 24/7 | Included | Once your agent is built and deployed |
| Books appointments on your calendar | Native Google and Microsoft calendar booking | Via configured calendar integrations |
| Two-way SMS conversations | AI-handled, with MMS photo understanding | Configurable |
| Outbound calling | Browser dialer plus automated lead callback | Yes |
| Business phone numbers included | Local, mobile and toll-free in 30 countries | Native telephony or your own SIP trunk |
| Languages | 58, switching mid-call | Multiple, configurable |
| Multi-location | Unlimited locations on every plan | Configurable routing |
| CRM integration | Native HubSpot, plus API and webhooks | CRM, calendar and contact-centre integrations |
| Setup effort | Guided onboarding, live in about ten minutes | Enterprise implementation and onboarding |
| Built for | Appointment-driven businesses across 35+ industries | Enterprises and agencies |
How each one charges
Rates change, so no figures are quoted here. What matters when you compare is the shape of the bill, and that is below.
Asisto
Self-serve, no annual commitment, no contracts and no cancellation fees. Either per appointment booked or a flat monthly rate.
See the plansSynthflow
A single published enterprise tier with an annual commitment, scoped by call volume, concurrency, telephony, integrations and security review.
Their pricing pageQuestions people ask
- Can a small business use Synthflow?
- Its published pricing is a single enterprise tier with an annual commitment, which puts it out of reach for most small businesses regardless of fit. Check their pricing page for current terms - this changed once and may change again.
- Is a no-code builder better than a configured product?
- For an agency deploying different agents for different clients, yes. For one business that wants its own phone answered well, a product already shaped around that job needs less work and fails in fewer ways.
- What if I need something unusual?
- Asisto exposes an API and webhooks for automated calling and CRM workflows, so unusual integrations are possible. Genuinely unusual *conversations* are where a builder like Synthflow still wins.
Where this came from
Claims about Synthflow were checked against its own website on . Products change - if something here is out of date, the sources below are the place to check, and tell us so it gets fixed.
Hear it answer your phone before you decide
Call the demo line and talk to the receptionist yourself. No signup, no sales call.
Asisto for your industry
What changes when the calls are dental appointments rather than emergency plumbing jobs: the questions callers ask, what gets booked, and what a missed call is worth.