We've built production AI receptionists on most of these platforms. Here's how they actually compare on pricing, HIPAA, and call containment — not just what the marketing pages say.
Evaluation criteria
Most buyers get distracted by voice naturalness demos. The real differentiators are HIPAA status, pricing structure at your call volume, and whether your team can manage the agent without ongoing dev work.
HIPAA compliance
Critical for healthcare
Pricing model
Per-minute vs flat-fee vs per-user
No-code / visual editor
Can non-engineers manage it?
Custom voice & persona
Branded voice, custom scripts
CRM & calendar integration
Syncs with your existing tools
Call containment rate
How many calls it fully handles without a human
Head-to-head comparison
| Platform | Type | Starting price | HIPAA | No-code | Custom voice |
|---|---|---|---|---|---|
Retell AIBest overall | Voice AI platform | $0.07/min platform + BYOK LLM/TTS | ✓ | ✓ | ✓ |
VapiBest for engineers | Voice AI platform | $0.05/min platform + BYOK STT/LLM/TTS | ✗ | ✗ | ✓ |
Smith.aiBest human fallback | AI + human hybrid | $292+/mo (per-call pricing) | ✓ | ✓ | ✗ |
Air.aiBest for outbound | Autonomous AI calling | Custom (contact sales) | ✗ | ✓ | ✓ |
GoodcallBest flat-fee SMB | Managed AI receptionist | $49–$199/mo flat | ✗ | ✓ | ✗ |
Dialpad AIBest enterprise suite | Enterprise communications | $27+/user/mo | ✓ | ✓ | ✗ |
Platform profiles
Voice AI platform · $0.07/min platform + BYOK LLM/TTS
Best for
Healthcare, SMB, teams without AI engineers
Watch out for
Voice-only — no video or multi-party rooms
Voice AI platform · $0.05/min platform + BYOK STT/LLM/TTS
Best for
Engineering-led teams, custom SIP infrastructure
Watch out for
No HIPAA BAA; requires coding for most flows
AI + human hybrid · $292+/mo (per-call pricing)
Best for
Law firms, complex intakes that need human fallback
Watch out for
Expensive at scale; less customisable than pure AI
Autonomous AI calling · Custom (contact sales)
Best for
Outbound sales automation at volume
Watch out for
Expensive; HIPAA status unconfirmed; limited inbound customisation
Managed AI receptionist · $49–$199/mo flat
Best for
SMBs wanting a flat monthly fee, quick setup
Watch out for
Limited customisation; less suitable for complex workflows
Enterprise communications · $27+/user/mo
Best for
Enterprise contact centres needing AI + telephony in one platform
Watch out for
Per-user pricing scales poorly; less focused on autonomous agents
By use case
Dental & Orthodontic Practices
Retell AI (custom-built)
HIPAA BAA, integrates with Open Dental, Dentrix, and Eaglesoft. 24/7 scheduling with 55–75% call containment. Hestur AI has built this stack for dental groups.
Learn more →Medical Practices & Clinics
Retell AI or Dialpad AI
Retell wins for custom intake flows. Dialpad wins if you need a full enterprise communications suite alongside AI. Both offer HIPAA BAAs.
Learn more →Law Firms
Smith.ai or Retell AI
Smith.ai for complex intakes that need human lawyer fallback. Retell for firms that want fully automated intake at lower per-call cost.
Learn more →Small Business (General)
Goodcall or Retell AI
Goodcall for the simplest setup at a flat $49–199/mo. Retell if you want custom call flows, CRM integration, or branded persona.
Learn more →Enterprise & Multi-Location
Retell AI or Vapi
Retell for enterprise deployments that don't want to manage infra. Vapi for engineering-heavy teams needing deep SIP control and custom telephony architecture.
Learn more →Outbound Sales Teams
Air.ai or Vapi
Air.ai for autonomous outbound dialling at scale. Vapi for teams who want to build custom outbound flows with full API control.
Learn more →How we build
The tools above are platforms. What you get from Hestur AI is a production-ready AI receptionist that's scoped to your practice, trained on your scripts, integrated with your calendar and CRM, and shipped in 2–4 weeks — with a real human owner at our end.
We review your call transcripts, booking flow, and top 10 call reasons. You get a fixed scope and timeline before we write a line of code.
We build a working AI receptionist on your real data in 2–4 weeks. You test it live before committing to production.
We push to production, monitor the first 1,000 calls with you, and hand off to your team with full documentation.
Book a 30-minute call. We'll scope the right platform for your use case and give you a fixed-price PoC estimate — no retainer, no vague roadmaps.