Voiceflow

Our full take

Voiceflow is the design tool of the group. If the others are about getting a phone agent live fast, Voiceflow is about building the agent properly first. The canvas, where you map out what the agent says and does by dragging blocks around, is the best in this directory, and the built-in knowledge base (the place you load your docs so the agent can answer from them) is a real one, not a bolt-on. That is the draw for agencies and product teams who care about how the agent is put together, not just that it answers the phone.

Here is the honest framing though. Voiceflow is a builder, not a turnkey phone product. Voice and telephony sit on top of the platform rather than at its core. You can connect a phone line, but you are wiring it up: Voiceflow will provision a US or Canadian number for you, or you bring Twilio, Vonage or Telnyx. The voice itself is configurable too. There are built-in voices, and you can route to ElevenLabs, Google or Azure for better quality. That flexibility is genuine, but it means the voice experience is something you assemble, not something that ships finished. A non-technical buyer who wants to plug in and go will feel that.

Pricing is the other thing to watch, because Voiceflow does not charge per call-minute. Since 29 April 2025 the bill has three parts: a base subscription, seats, and usage credits that power every action the agent takes. Pro is $60 a month for 10,000 credits (rising to $120 for 20,000), Business is $150 a month for 30,000 credits (up to $500 for 100,000), and every extra editor seat is $50 a month. Enterprise is custom and unlocks single sign-on, roles and managed setup.

The credit model is where voice gets expensive fast, so it is worth showing the workings. A phone call costs 10 credits a minute just to be connected. On top of that, every message in and out is 1 credit, the LLM response is charged by the model you pick (a heavy model like GPT-4 Turbo costs more than GPT-4o mini), and text-to-speech is billed per character on top of the call minutes. Add it up and a real voice call burns far more than 10 credits a minute. A reported ten-minute call uses roughly 170 credits, which is about 17 a minute once everything stacks.

So what does that mean in money? At the Pro rate, 10,000 credits for $60 works out at $0.006 a credit. The 10 call-credits a minute alone are about $0.06. Push it to the ~17 credits a minute a real call uses and the Voiceflow side lands near $0.10 a minute, before you add the phone carrier (Twilio is about $0.014 a minute if you bring your own). That gives a working all-in band of roughly USD 0.13 to 0.30 a minute, and I want to be clear that this is a Voxrater estimate, not a number Voiceflow publishes. The real figure swings on three choices you make: which LLM, which voice provider, and whose phone line. A cheap model on the Business credit rate sits at the low end. A premium model plus ElevenLabs voices sits at the high end.

One sharp edge with the credit model: credits do not roll over, and they run out mid-cycle. When the monthly allocation is gone, the agent stops responding until you upgrade a tier or the next cycle starts. For a chat agent that is annoying. For a phone agent taking live calls, it is a real operational risk, so size the tier above what you think you need.

On compliance the paperwork is there. Voiceflow’s security page states SOC 2 Type II, GDPR, HIPAA and ISO/IEC 27001:2022, which is the list a regulated buyer checks for. We mark SOC 2 Type 2, HIPAA and GDPR true on the strength of that page. We have not seen a separate SOC 2 Type 1 attestation called out, so we leave that one false rather than assume it.

A note on the affiliate side, because Voxrater earns commissions and we will not hide that. Voiceflow runs a partner programme through PartnerStack with two tiers. Certified pays 20% on Pro and 15% on Business; Premium pays 30%. The catch worth knowing is that the commission is first-year subscription only, not the recurring lifetime cut some competitors offer. We have not verified payout reliability ourselves, so we flag it “unverified” for now.

The 1 to 10 scores here are an editorial preview, our provisional read to get the framework in place, not a measured result. We have not run Voiceflow through our own call tests yet, so there is no Voxrater latency figure. The pricing, credit, telephony and compliance detail is sourced from Voiceflow’s own announcement, docs, telephony, partner and security pages, captured 2026-05-31.

Disclosure. Voxrater may earn an affiliate commission if you sign up through some links on this page. It never changes our rating, our test numbers, or what we write. Our methodology is public. Last reviewed by Voxrater, 2026-05-31.