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Pick up to three. Scores are curated estimates on a 0–10 scale. Lock-in: higher = worse.
| Dimension | Vapi | Retell AI |
|---|---|---|
| Overall | 8.1 | 8.2 |
| Capability fit | 9.0 | 8.8 |
| Price / performance | 7.2 | 7.8 |
| Latency / reliability | 8.4 | 8.4 |
| Developer & agent DX | 9.2 | 9.0 |
| Privacy / data retention | 7.5 | 8.0 |
| Lock-in risk (higher = worse) | 5.0 | 4.5 |
| Maturity / track record | 8.0 | 8.0 |
| Pricing | As of 2026-09-14 (vapi.ai/pricing): Build = usage-based hosting $0.05/min voice + $0.005/SMS/chat msg; STT/LLM/TTS at provider cost (or $0 with BYOK). 10 concurrent lines included,… | As of 2026-09-14 (retellai.com/pricing): True PAYG — platform voices all-in often ~$0.07–$0.31/min. Component: Voice Infra $0.055/min + TTS $0.015 (Retell/Cartesia/Minimax/Fish/Ope… |