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“I lose calls when I'm out in the field or on a job site”

Tradespeople, clinics, garages and service businesses that miss calls while they're working — every missed call is often a customer who calls the next result on Google. Read the cost section carefully: the recommended tool changed its target in 2026.

Recommended agent: Synthflow

💰 By quote: enterprise contracts from $30,000/year at Synthflow since 2026 (the old plans from $29/month have been withdrawn). For a small business, per-minute alternatives cost about $0.07 to $0.31/minute all-in. Level: Easy 🌍 Germany No free plan or public plan for small businesses: building the agent can be tested for free, production under an annual enterprise contract from $30,000/year

Synthflow (synthflow.ai), a no-code platform for creating voice agents that answer the phone: 24/7 call answering, answers to frequent questions, appointment booking and transfer to you when it's urgent. The tool is still excellent — but its publisher now targets large organizations, which changes everything for a small business (see the cost).

How it works

Trigger: A customer calls your number — picks up, chats naturally, answers or books the appointment, then sends you the summary, and you get no lost calls, and a report of every conversation in your inbox.

Step-by-step setup

For Synthflow: test building the agent for free in their visual tool, but ask for a written quote before any commitment (see cost).
Describe what the agent needs to know: hours, services, rates, rules for transferring to a human.
Give it a voice and a greeting script, then call it yourself to test the tricky cases.
Compare with the per-minute alternatives (next step) before signing anything.

⚠️ Guardrails: Don't sign a $30,000 annual contract to answer 30 calls a week: for a small business, voice agents billed by the minute (for example Retell AI, $0.07 to $0.31/minute, or Vapi from $0.05/minute of hosting plus the providers) are the realistic route. In all cases, the agent must be able to transfer to a human and never invent a price or a timeframe.

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Frequently asked questions

How much does Synthflow cost?

By quote: enterprise contracts from $30,000/year at Synthflow since 2026 (the old plans from $29/month have been withdrawn). For an SMB, per-minute alternatives cost roughly $0.07 to $0.31/minute all-in. No free plan or public pricing for SMBs: agent building can be tested for free, production under an annual enterprise contract from $30,000/year.

Is Synthflow free?

No. No free plan or public pricing for SMBs: agent building can be tested for free, production under an annual enterprise contract from $30,000/year.

Is Synthflow hard to get started with?

Level: Easy. Setup takes 4 steps; the first: For Synthflow: test agent building for free in their visual tool, but request a written quote before any commitment (see cost).

What limits and guardrails should I know about with Synthflow?

Don't sign a $30,000 annual contract to answer 30 calls a week: for a small business, per-minute voice agents (for example Retell AI, $0.07 to $0.31/minute, or Vapi from $0.05/minute of hosting plus the providers) are the realistic route. In all cases, the agent must be able to transfer to a human and never invent a price or a timeframe.