Models & Pricing
Simple, transparent pricing per minute. Choose the model that fits your use case.
Spark
$0.02/min
+0.5¢/min per 10K prompt tokens after the first 5K
The cheapest system on the market today. Intelligence comparable to other vendors' models.
Latency: Fast enough for most use cases
Best for: Relatively simple and cost-sensitive use cases
Bolt
$0.05/min
+1¢/min per 10K prompt tokens after the first 5K
A bit smarter and a lot faster than Spark. Still extremely cost-effective. A great fit for many use cases.
Latency: Ultra-fast
Best for: Impatient callers; tasks that aren’t extremely complex.
Storm
$0.12/min
+2¢/min per 10K prompt tokens after the first 5K
The intelligence king. No more multi-prompt agents: Storm can handle even complicated prompts out of the box.
Latency: Excellent — Storm combines thinking and non-thinking models for high performance at low latency.
Extra intelligence available for the most complex or high-stakes interactions (+5¢/min)
Channels
Telephony & Web
Connect via web widget, SIP trunk, or a ThunderPhone demo number.
Included
Web Widgets
Embed a voice agent on your website at no extra charge.
SIP Trunks
Connect your own Twilio, Telnyx, or other SIP trunk for free.
Demo Phone Numbers
ThunderPhone Numbers
Need a phone number to test with? We can provision one for you.
+1¢/min for ThunderPhone-provisioned numbers (US only).
Voices
Two tiers of voices
Choose from a wide range of voices, vetted to minimize hallucinations.
| Voice Category | Base | HD |
|---|---|---|
| Price | No extra charge | +2¢ / min |
| Quality | Good | Even Better |
| Languages | 6 languages | Most major languages |
| Voices Available | ~20 voices | ~50 voices |
Base
Voice Category
- Price
- No extra charge
- Quality
- Good
- Languages
- 6 languages
- Voices Available
- ~20 voices
HD
Voice Category
- Price
- +2¢ / min
- Quality
- Even Better
- Languages
- Most major languages
- Voices Available
- ~50 voices
Enterprise
Need a custom solution?
We offer custom implementations, features, SLAs, and compliance options beyond our standard plans. Reach out to discuss your specific needs and get custom pricing.