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Retell AI vs VoiceAIWrapper

Two fact sheets from our own research, side by side — pricing, platforms, API access and status re-checked by us rather than quoted from the vendors. Retell AI starts at $0.07, VoiceAIWrapper at $29. Only Retell AI has a free tier. Both ship a public API.

Retell AIBuild and run AI phone agents that book, qualify and transfer calls, billed by the minute.VoiceAIWrapperWhite-label console that lets agencies resell Vapi, Retell, ElevenLabs, Bolna or Ultravox agents

Side by side

FactRetell AIVoiceAIWrapper
CategoryVoice Agents & Phone AIVoice Agents & Phone AI
Pricing modelFreemiumPaid
Starts at$0.07 minute$29 month
Public APIYesYes
PlatformsWeb, APIWeb, API
CompanyRetell AI Inc.VoiceAIWrapper AI Development - FZCO
Launched2023—
Last verifiedSep 6, 2026Sep 6, 2026

What our research says

Retell AI

One of the more honest voice-agent stacks: the pricing page breaks out infrastructure, TTS and LLM cost per minute so you can predict a call's cost instead of guessing. Telephony choice is wide and the concurrency allowance is generous. The catch is that per-minute billing plus add-ons makes a busy contact centre expensive fast, and the cheap end of the range only holds if you pick the cheap models.

Pros

  • Per-minute cost broken down by voice infrastructure, TTS provider and LLM on the public pricing page
  • Telephony via SIP trunking, Twilio and Vonage plus n8n, HubSpot, Make and Go High Level integrations
  • 20 concurrent calls included before any concurrency charge
  • Voice, chat and SMS agents share one platform and API
  • HIPAA path exists via a signed BAA covered in the terms of service

Cons

  • Cost per minute more than quadruples between the cheapest and most capable model combinations
  • Knowledge base, denoising, PII removal and branded caller ID are all metered extras
  • No flat-rate plan, so a spike in call volume lands straight on the invoice

VoiceAIWrapper

This solves a specific commercial problem: an agency that wants recurring revenue from voice AI without building a console or picking one provider forever. Supporting five backends means clients are not locked to Vapi's or Retell's pricing. The number on the plan page is only the wrapper — every minute of actual conversation is billed on top by whoever runs the calls.

Pros

  • Supports five voice backends: Vapi, Retell AI, ElevenLabs Agents, Bolna and Ultravox
  • Custom domain, logo and product name for genuine white-labelling
  • Campaign API with contact sync and webhooks into CRMs
  • Names a real registered entity and UAE address in its terms of service

Cons

  • Voice minutes are excluded and billed separately by the underlying provider
  • Pricing scales by client-account count, so growth gets expensive quickly
  • Full API documentation is available on request rather than published

Which one fits

Choose Retell AI if you need

  • Teams replacing an outbound qualification or booking script
  • Contact centres that already have Twilio, Vonage or SIP trunking
  • Developers who want per-minute cost visibility before launch

Choose VoiceAIWrapper if you need

  • Agencies packaging voice agents as their own branded monthly product
  • Resellers who want to switch or mix voice backends without rebuilding
  • Teams that need per-client separation of accounts and reporting

More comparisons

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