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Developer platform to build advanced voice AI agents
Pros
- Flexible bring-your-own-key model
- Low base orchestration fee ($0.05/min)
- Highly customizable
- Strong developer community
Cons
- True all-in cost $0.12-$0.31/min
- Requires wiring 4-6 providers
- Cost management is complex
- Steep learning curve
✓ Where it shines / best for
- Developers building phone-based voice agents and assistants
- Companies automating call centers / customer support
- Teams wanting to mix best-of-breed STT/TTS/LLM providers
✕ Not the best fit for
- Non-technical users wanting a no-code consumer app
- Simple one-off text-to-speech needs
Features
- ✓ API access
- ✓ Text-to-speech
- ✓ Real-time
- ✓ Voice agents
- ✓ Low latency
- ✓ Speech To Text
- ✓ Telephony
- ✓ LLM Orchestration
Pricing
| Plan | Price | Billing | Notes |
|---|---|---|---|
| Free credits | $10 credits | one-time | New users get $10 in credits to test (~30-75 min of calls); no ongoing free tier |
| Build (Pay-as-you-go) | $0.05 | per minute | Vapi platform/orchestration fee per call minute; STT/TTS/LLM/telephony passed through at cost or BYO key; SMS/chat $0.005/msg; 10 lines, extra lines $10/mo each |
| Scale | Custom | annual | Annual contract with fixed platform fee, committed volume, volume-based per-minute pricing, enterprise terms |
| HIPAA add-on | $2,000 | monthly | Optional HIPAA compliance add-on |
| Zero Data Retention add-on | $1,000 | monthly | Optional zero-data-retention add-on |
Pricing verified from the official source. Prices change often — confirm on the vendor's site before buying.
Specifications
| model | orchestration layer |
| billing | per-minute + components |
Sponsored
A full review is being generated for this product and will appear here shortly.