ANALYSIS VERDICT
Cartesia leads on autonomy (70 vs 67), while PolyAI has no verified price. Select Cartesia for unmatched sub-100ms audio generation speed; consider PolyAI if you prioritize superb background noise tolerance in realistic phone environments.
| Metric / Feature | Cartesia Visit cartesia.ai ↗ | PolyAI Visit poly.ai ↗ |
|---|---|---|
| Autonomy Score (AES) | 70/100 Core 80 · -10 setup | 67/100 Core 79 · -12 setup |
| Value-to-Cost Ratio | 5.01 | — |
| Starting Price | $0/mo | Not verified |
| Pricing Model | freemium | enterprise |
| Primary Strengths |
|
|
| Tradeoffs |
|
|
| Common Integrations | No direct shared integrations recorded. | |
| Unique Integrations | ||
Pricing tier comparison
Cartesia tiers
Free
$0 /month
- 20K credits / month
- $1 prepaid agents / month (~33 agent minutes)
- Text to Speech (Sonic-3.6, ~27 min)
- Speech to Text (Ink-2, ~1h 51m)
- 2 concurrent TTS requests, 8 concurrent STT requests
Pro
$5 /month
- 100K credits / month
- $5 prepaid agents / month (~2h 47m)
- Commercial use license
- Instant voice cloning
- 3 concurrent TTS requests, 12 concurrent STT requests
Startup
$49 /month
- 1.25M credits / month
- $49 prepaid agents / month (~27h 13m)
- Pro voice cloning (2 slots)
- Organizations support
- 5 concurrent TTS requests, 20 concurrent STT requests
Scale
$299 /month
- 8M credits / month
- $299 prepaid agents / month (~166h 7m)
- Priority support
- High concurrency limits (15 TTS, 60 STT)
- Pro voice cloning (4 slots)
Enterprise
Custom /custom
- Custom credits & agent usage
- Volume pricing
- Custom concurrency limits
- DPAs and BAAs for compliance
- Shared Slack channel & SSO
PolyAI tiers
Team Pilot
$500 /mo
- Superb background noise tolerance in realistic phone environments
- Standard CRM integration
- Up to 5 active rep seats
Commercial Scale
$1,000 /mo
- Full autonomous pipeline workflows
- Dedicated customer success manager
- Unlimited data lookups
Global Enterprise
Custom /annual custom
- Custom enterprise SLA & security audit
- Dedicated IP pool / private cloud
- Custom webhook orchestration
Neither quite right? Tell us your team and budget and we'll pick the top 3.