Comparison
Vapi vs Retell: two strong metered platforms, one shared ceiling
Vapi and Retell are both capable voice AI platforms with different centers of gravity: Vapi optimizes for developer control, Retell for phone-automation operations and compliance packaging. Both share the same structural limits. Part of our compare voice AI platforms hub.
Competitor figures accessed 2026-07-30; re-verification scheduled by 2026-08-30. Page last updated 2026-07-31.
Quick answer
| Dimension | Vapi | Retell |
|---|
| Headline price | $0.05 per minute hosting fee, charged even under BYOK (vapi.ai/pricing, accessed 2026-07-30) | $0.07 per minute advertised blend floor (retellai.com/pricing, accessed 2026-07-30) |
|---|
| Realistic all-in cost | $0.15 to $0.50 per minute once providers and telephony layer on | $0.13 to $0.31 per minute in third-party analysis, with layered component metering |
|---|
| Billing structure | Platform fee plus your provider and telephony costs | Every component metered: voice engine, models, telephony, add-ons |
|---|
| Center of gravity | Developer experience and BYOK breadth | Phone automation and compliance packaging |
|---|
| Compliance | Published attestations; enterprise review required | SOC 2 Type 1 and Type 2, self-serve BAA portal |
|---|
| Inference in your environment | No; cloud-brokered models only | No; VPC and on-prem platform tiers, cloud models |
|---|
| Path off the meter | None documented | None documented |
|---|
Figures from public pricing pages and third-party analysis, accessed 2026-07-30. Vendors update rate cards; verify before you sign.
Where Vapi is stronger
- Developer experience. Vapi is API-first with a deep configuration surface, and its documentation and tooling are built for engineering teams that want to compose their own stack.
- BYOK breadth. Vapi supports bring-your-own-keys across speech-to-text, language model, and text-to-speech providers, so teams keep their own provider accounts and negotiated rates.
- Model choice. A wide catalog of supported providers lets teams swap components per agent without replatforming.
Where Retell is stronger
- Compliance packaging. Retell holds SOC 2 Type 1 and Type 2 and offers a self-serve BAA portal, the more packaged path for healthcare and regulated buyers. We do not contest this; it is a genuine strength.
- Phone-automation focus. Retell's operations console, warm-transfer handling, and telephony tooling are built around production phone agents, with published case studies we do not contest.
- Deployment tiers. VPC and on-prem deployment of the platform are offered on higher tiers for enterprises that want contractual isolation.
Where both share the same limits
- Meters with floors above zero. Vapi's $0.05 hosting fee applies even on your own keys; Retell meters every component on every call. Neither publishes a tier where the platform meter approaches zero.
- No customer-environment inference. Both broker cloud-hosted models. If your review requires inference inside your own environment, neither platform's tier ladder gets you there.
- Layered cost attribution. On both, the real per-minute figure is a sum of meters, which makes unit economics hard to read per call without external analysis.
The verdict
Choose Vapi if
Your team is engineering-led, wants API-first control, and plans to compose its own provider stack through BYOK while accepting the $0.05 per minute hosting floor on every call.
Choose Retell if
You run production phone automation in a regulated industry and value packaged compliance (SOC 2 Type 1 and 2, self-serve BAA) and an operations console over raw API surface.
Consider a third way if
You want per-stage sourcing and a path off the meter. PeachDesk records sourcing mode and cost on every metered call, never meters calls on your own provider keys, and Local mode runs a self-hosted open-model stack with no per-minute provider charge, where you pay for GPU capacity. See our Vapi alternative and Retell alternative pages and PeachDesk pricing.
Frequently asked questions
Is Vapi or Retell cheaper per minute?
Neither publishes a single honest number, because both meter in layers. Vapi lists a $0.05 per minute hosting fee that applies even when you bring your own provider keys, with realistic all-in configurations at $0.15 to $0.50 per minute. Retell advertises a $0.07 per minute blend floor, with realistic configurations at $0.13 to $0.31 per minute in third-party analysis, because the voice engine, models, telephony, and add-ons meter separately (vapi.ai/pricing, retellai.com/pricing, accessed 2026-07-30).
Which is better for developers, Vapi or Retell?
Vapi is generally the stronger developer experience: an API-first design, broad bring-your-own-keys support across speech-to-text, language model, and text-to-speech providers, and extensive configuration surface. Retell is more opinionated toward phone-automation operations, which suits teams that want a managed console over raw API control.
Which has stronger compliance, Vapi or Retell?
Retell publishes the stronger compliance packaging: SOC 2 Type 1 and Type 2, plus a self-serve BAA portal for healthcare buyers. We do not contest that posture; it is a genuine strength. Vapi also publishes compliance attestations, but Retell’s BAA path is the more packaged offer for regulated phone workflows.
Can I run Vapi or Retell models in my own environment?
No. Both broker cloud-hosted models, and neither offers inference inside the customer’s environment. Retell offers VPC and on-prem deployment of its platform on higher tiers, but the models remain third-party cloud services. If inference inside your environment is a hard requirement, that is an architectural difference, not a tier upgrade; see PeachDesk Local mode.
What is a third option beyond Vapi and Retell?
PeachDesk takes a different structural position: per-stage sourcing across managed providers, your own keys, and a self-hosted open-model stack. Calls on your own provider keys are never metered by PeachDesk, and Local mode carries no per-minute provider charge on self-hosted stages, where you pay for GPU capacity. Frontier mode starts at $0.06 per minute on the Bibha Plan, as low as $0.03 at volume, with Pay As You Go at $59 per month.
Test the third way on a real agent
Start free, build an agent, and watch the sourcing modes and cost records on your own calls.