AI Voice Agent Cost Per Minute: Real Numbers from Production (2026)
- Managed platforms cost 8–15¢/minute all-in; a custom LiveKit stack runs ~2.5¢/minute at production quality.
- The crossover point is ~20K minutes/month, below that, use a platform; above it, owning the stack pays back within a quarter.
- At 100K minutes/month the difference is ~$90K/year.
How much does an AI voice agent cost per minute?
An AI voice agent costs between 2.5¢ and 15¢ per minute in 2026 depending on how you build it. Managed platforms (Retell, Vapi, Bland) land at 8–15¢ once you include STT, LLM, TTS and telephony. A custom stack on LiveKit with optimized providers runs at roughly 2.5–4¢.
The 2.5¢ figure isn't theoretical, it's what our production system costs after replacing a 10¢ vendor stack.
How do platform and custom voice AI costs compare?
Monthly cost by volume:
| Volume | Managed platform (10¢) | Custom LiveKit (2.5¢) | Yearly difference |
|---|---|---|---|
| 5K min/mo | $500 | $125 | $4,500 |
| 20K min/mo | $2,000 | $500 | $18,000 |
| 100K min/mo | $10,000 | $2,500 | $90,000 |
| 500K min/mo | $50,000 | $12,500 | $450,000 |
When should you use a voice AI platform anyway?
Prototyping, sub-20K minute volumes, or when you have no engineering capacity. I integrated Retell into production in 48 hours and it produced a 70% false-positive reduction that they published as a case study, platforms are excellent at what they do. The mistake is staying on one after your volume makes ownership cheaper.
Run your own numbers in the free Voice AI Cost Calculator, or read the AI voice agent development service page for how a migration works.