Vapi is a developer-first, pay-as-you-go voice platform. Octa Voice is a flat-subscription operator for SMBs. Both great. Totally different buyers. Here's which one fits you.
| Dimension | Octa Voice | Vapi |
|---|---|---|
| Pricing model | Flat subscription + overage | Pay-as-you-go per minute + model pass-through |
| Starting cost | $9/mo (20 min · Lite) | $0 base · ~$0.05/min + STT/LLM/TTS pass-through (effective $0.08–$0.15/min) |
| Who it's built for | SMB operator — clinic, salon, service business | Developer / platform team building on top |
| Dashboard vs API | Operator dashboard-first · API available | API-first · UI is a thin wrapper |
| Channels | Voice + web chat + SMS + WhatsApp | Voice-only |
| Model choice | Opinionated: Deepgram + Cartesia + Claude Haiku, tuned | Pick-your-own menu: 10+ STTs, 20+ TTSs, 15+ LLMs |
| Setup time | ~10 minutes · paste a URL, click done | Hours to days · you glue the stack |
| Pre-built vertical flows | 5 · medical, salon, auto, dental, grooming | Build your own |
| Live-agent handoff | ✓ on Pro+ · ACD queues on Business | DIY |
| HIPAA / BAA | ✓ bundled on Business | Enterprise contract |
| Billing predictability | Flat sticker + capped overage | Depends on usage + which models you picked |
Vapi pricing varies by model mix. The $0.08–$0.15/min range is a typical blended rate for GPT-4o-mini + Deepgram Nova-2 + ElevenLabs Flash, based on their public calculator in Oct 2026. Confirm on their site.
We'll pick the models, bundle the compliance, and send one monthly invoice. You run your business.