ComparisonVoice AIPricing
Voice AI Platforms Compared: Ortavox vs Vapi vs Bland AI vs Retell (2025)
March 1, 2025·11 min read·Ortavox Team
An honest comparison of the leading voice AI platforms in 2025. We compare latency benchmarks, pricing models, provider support, compliance, and developer experience.
The voice AI infrastructure market consolidated around four platforms in 2025: Ortavox, Vapi, Bland AI, and Retell AI. This guide compares them honestly across the dimensions that matter most to developers.
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Disclosure: This comparison is written by the Ortavox team. We have done our best to represent competitors accurately based on their public documentation as of March 2025.
Quick comparison matrix
| Feature | Ortavox | Vapi | Bland AI | Retell AI |
|---|---|---|---|---|
| Latency (p50) | ~540ms | ~700–900ms | ~600–800ms | ~600–850ms |
| Free tier | 100 min/mo forever | Trial credits only | No | Trial credits only |
| Starting price | $0.055/min platform fee | $0.05/min + overages | ~$0.09/min all-in | $0.07/min + overages |
| BYOK (LLM/STT/TTS) | Yes, all three | Yes | Limited | Yes |
| SOC 2 Type II | Yes | Yes | In progress | Yes |
| HIPAA BAA | Enterprise | Enterprise | No | Enterprise |
| Interruption handling | < 300ms | ~400ms | ~500ms | ~350ms |
| Function calling | Yes, JSON schema | Yes | Yes | Yes |
Which platform should you choose?
- •Choose Ortavox if latency is critical, you want transparent pricing with full BYOK, or you need HIPAA compliance.
- •Choose Vapi if you want the largest community, the most integrations, and are comfortable with their pricing model.
- •Choose Bland AI if you want a fully managed experience with their own phone numbers and do not need BYOK.
- •Choose Retell if you want a polished developer experience with good documentation and a solid mid-tier feature set.