Retell AI · Grok Voice · Compare · Checked Oct 27, 2026
Retell AI vs Grok Voice pricing: which is cheaper?
At 1,000 minutes a month, Retell AI costs $99.80 and Grok Voice costs $84.55 on our stack, a difference of $15.25 in favor of Grok Voice. Checked Oct 27, 2026 (Retell AI) and Oct 28, 2026 (Grok Voice).
Retell AI$99.80$0.0998/min at 1,000 minPricing retellai.comGrok Voice$84.55$0.0846/min at 1,000 min · cheaperPricing x.aiMonthly cost at four volumes
| Volume | Retell AI | Grok Voice |
|---|---|---|
| 500 min/mo | $50.90 | $42.85 |
| 1,000 min/mo | $99.80 | $84.55 |
| 5,000 min/mo | $491.00 | $418.15 |
| 10,000 min/mo | $980.00 | $835.15 |
Our calculation from list prices: 3-minute inbound calls, 10 at once, one US number. A green dot marks the cheaper side. Change the scenario.
What each one bills for
| Item | Retell AI | Grok Voice |
|---|---|---|
| How it bills | Pick your providers | Bundled rate |
| Headline rate | $0.055/min voice infra | $0.08/min speech-to-speech |
| All-in per minute at 1,000 | $0.0998/min | $0.0846/min |
| Concurrency | 20 concurrent calls | 10 sessions at Tier 0, more with spend |
| Free to start | $10 credits (one-time) | Playground only; API usage is paid |
| Telephony | $0.015/min | Bring your own SIP trunk |
| LLM | $0.0016–$0.64/min | No separate LLM line |
Where the money goes at 1,000 minutes
Platform & linesBundled AI rateLLMTranscriberVoicePhone
Retell AI
$99.80 /mo at 1,000 min
- Voice infra$55.00
- LLM (GPT 4.1 mini)$12.80
- TTS (Retell platform voices)$15.00
- Telephony (Retell Twilio, US)$15.00
- Phone number$2.00
- Extra concurrency (20 included)$0.00
Grok Voice
$84.55 /mo at 1,000 min
- Grok Voice 3.0 speech to speech (includes LLM)$80.00
- Telephony: Twilio Elastic SIP, US local inbound$3.40
- Twilio local number$1.15
- Concurrency for 10 calls (Tier 0 includes 10)$0.00
FAQ
Is Retell AI cheaper than Grok Voice?
At 1,000 minutes a month, Retell AI costs $99.80 and Grok Voice costs $84.55 on our stack, a difference of $15.25 in favor of Grok Voice. Checked Oct 27, 2026 (Retell AI) and Oct 28, 2026 (Grok Voice).
How much does Retell AI cost per minute?
Retell AI lists $0.055/min (voice infra). All-in on our stack it works out to $0.0998 a minute at 1,000 minutes a month, or $99.80.
How much does Grok Voice cost per minute?
Grok Voice lists $0.08/min (speech-to-speech). All-in on our stack it works out to $0.0846 a minute at 1,000 minutes a month, or $84.55.
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