PGrok Voice · PolyAI · Compare · Checked Oct 27, 2026
Grok Voice vs PolyAI Dialog-RSN-1 API pricing: which is cheaper?
At 1,000 minutes a month, Grok Voice costs $84.55 and PolyAI Dialog-RSN-1 API costs $24.55 on our stack, a difference of $60.00 in favor of PolyAI Dialog-RSN-1 API, before PolyAI's text tokens (valid only until Nov 19, 2026). Checked Oct 28, 2026 (Grok Voice) and Oct 29, 2026 (PolyAI).
Grok Voice$84.55$0.0846/min at 1,000 minPricing x.aiMonthly cost at four volumes
| Volume | Grok Voice | PolyAI |
|---|---|---|
| 500 min/mo | $42.85 | $12.85 |
| 1,000 min/mo | $84.55 | $24.55 |
| 5,000 min/mo | $418.15 | $118.15 |
| 10,000 min/mo | $835.15 | $235.15 |
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 | Grok Voice | PolyAI |
|---|---|---|
| How it bills | Bundled rate | Pick your providers |
| Headline rate | $0.08/min speech-to-speech | $0.02/min connected minute |
| All-in per minute at 1,000 | $0.0846/min | $0.0246/min |
| Concurrency | 10 sessions at Tier 0, more with spend | 2 until a card, then 10 |
| Free to start | Playground only; API usage is paid | $100 before Nov 19, 2026 |
| Telephony | Bring your own SIP trunk | Not included |
| LLM | No separate LLM line | Text tokens billed separately |
Where the money goes at 1,000 minutes
Platform & linesBundled AI rateLLMTranscriberVoicePhone
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
PPolyAI Dialog-RSN-1 API
$24.55 /mo at 1,000 min
- Dialog-RSN-1 connected minutes$20.00
- Voice output (free until Nov 19, 2026)$0.00
- Telephony: Twilio Elastic SIP, US local inbound$3.40
- Twilio local number$1.15
- Concurrency for 10 calls (10 included after a card is added)$0.00
Text tokens are excluded, so the real cost is higher. Voice output is free until Nov 19, 2026; the price after that is not published. This total is valid only until Nov 19, 2026.
FAQ
Is Grok Voice cheaper than PolyAI?
At 1,000 minutes a month, Grok Voice costs $84.55 and PolyAI Dialog-RSN-1 API costs $24.55 on our stack, a difference of $60.00 in favor of PolyAI Dialog-RSN-1 API, before PolyAI's text tokens (valid only until Nov 19, 2026). Checked Oct 28, 2026 (Grok Voice) and Oct 29, 2026 (PolyAI).
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.
How much does PolyAI cost per minute?
PolyAI Dialog-RSN-1 API lists $0.02/min (connected minute). All-in on our stack it works out to $0.0246 a minute at 1,000 minutes a month, or $24.55.
More comparisons
Vapi vs Grok VoicePVapi vs PolyAI
Retell AI vs Grok VoicePRetell AI vs PolyAI
ElevenLabs vs Grok VoicePElevenLabs vs PolyAI
GoHighLevel vs Grok VoicePGoHighLevel vs PolyAI
Bland AI vs Grok VoiceAll comparisons · Rankings at your volume · How prices are checked