Retell AI vs OpenAI pricing
Voice agents: Retell AI from $0.055 vs OpenAI from $0.05.
Last updated · prices checked daily
Voice agent platforms: Retell AI vs OpenAI
OpenAI has the lower listed Voice agents price: $0.05 per minute (gpt-live-1 (speech-to-speech)) vs $0.055 for Retell AI (Retell Voice Infra (platform only)), about 9% less.
Not apples to apples: Retell AI's rate is platform fee only while OpenAI's is bundled models. Use the calculator below to add speech, LLM and telephony costs.
| Vendor | Product / tier | $/min |
|---|---|---|
| OpenAI Visit site ↗ | gpt-live-1 (speech-to-speech) Bundled models Per-minute session price; backend model and tool usage are charged separately. | $0.05 |
| Retell AI Visit site ↗ | Retell Voice Infra (platform only) Platform fee only Infrastructure component only; LLM, TTS and telephony are added per minute. | $0.055 |
| Retell AI Visit site ↗ | Retell voice agent, all-in range Pay as you go All-in Advertised all-in range depending on LLM, voice and telephony choices. | $0.07–$0.31 |
What it costs at volume (lowest listed rate)
| Minutes | Retell AI | OpenAI |
|---|---|---|
| 1,000 min | $55.00 | $50.00 |
| 10,000 min | $550.00 | $500.00 |
| 100,000 min | $5,500.00 | $5,000.00 |
Cost-per-call calculator
Estimate what one call really costs. Prices come from today's table; LLM and telephony presets are per-minute rates published by Retell and Vapi. Everything is editable.
Cartesia's pricing page puts one minute of speech at 750–800 characters; Rime says about 1,000. The talk share is your own guess at how much of each call the agent is speaking.
FAQ
Is Retell AI or OpenAI cheaper for voice agent platforms?
OpenAI has the lower listed Voice agents price: $0.05 per minute (gpt-live-1 (speech-to-speech)) vs $0.055 for Retell AI (Retell Voice Infra (platform only)), about 9% less. Prices checked Oct 28, 2026.
How often are these prices updated?
Every day. A script reads each vendor's public pricing page, extracts the listed rates and keeps a dated copy, so price changes show up in the history.