Voice agent
100 calls a day at 1 minute each is about 3,000 minutes a month, with up to 5 calls at the same time.
Every month my agent talks for , up to calls at once.
Mistral Voxtral is the cheapest, at $120.00 a month. OpenAI would cost 2.4 times as much.
Estimated monthly bill for 3,000 minutes, lowest first. 5 of 7 providers fit.
- 1Mistral VoxtralVoice Agents API (Mistral Small 4), $0.04/min audio in + out$120.00 per monthLowest priceVisit Voxtral
Audio in + out $120.00 Monthly total $120.00 Works out to $0.04 per minute.
- 2AssemblyAIVoice Agent API, $0.075/min audio in + out$225.00 per month+$105.00, 87.5% moreVisit AssemblyAI
Audio in + out $225.00 Monthly total $225.00 Works out to $0.075 per minute.
- 2DeepgramVoice Agent API (Standard), $0.075/min audio in + out$225.00 per month+$105.00, 87.5% moreVisit Deepgram
Audio in + out $225.00 Monthly total $225.00 Works out to $0.075 per minute.
- 4ElevenLabsSpeech Engine (voice agents), $0.08/min audio in + out$240.00 per month+$120.00, 100.0% moreVisit ElevenLabs
Audio in + out $240.00 Monthly total $240.00 Works out to $0.08 per minute.
- 5OpenAIGPT-Realtime-2.1, Per-token billing, converted to minutes$288.00 per month+$168.00, 140.0% moreEstimateVisit OpenAI
Tokens in + out $288.00 Monthly total $288.00 Works out to $0.096 per minute. Estimated from audio-token rates. Estimated.
Converted to tokens at 600 input and 1200 output tokens per minute.
Not available for this setup
- AzureDoes not offer this service.
- Google CloudDoes not offer this service.
- Prices updated 2026-10-30.
- Free-tier credits are not subtracted.
- How we calculate this
Some “Visit” links are affiliate links: the provider may pay us if you sign up. That never changes the order, which is set by price alone.
What to look at
- Per-minute voice agent prices may exclude the language model, which is billed separately.
- Concurrency limits can force a plan upgrade or burst pricing.
- Token-based realtime pricing is converted to minutes here, so treat those rows as estimates.
Frequently asked questions
- How much does a voice agent cost per minute?
- It varies by provider and by what is included. The calculator shows the monthly bill for 3,000 minutes and the per-minute figure behind it under Show the math.
- Is the language model cost included?
- Only where the provider bundles it. Separate language model charges are not added, so add them to the estimate if your stack uses an external model.