Voice Agents · Compare
Speechify vs Cartesia
Cartesia (Line) is ultra-low-latency voice infrastructure with a $0.06/min headline — but telephony adds $0.014/min and the "LLM included" is a limited-time promo. Speechify is all-in from $0.07/min with LLM included permanently, plus a full workflow, integrations, and compliance platform, and 60 free minutes a month with commercial use.
Speechify
Cartesia
Speechify at a glance
$0.07/min
all-in — LLM included
60
free minutes every month
Tool calling
+ webhooks
SOC 2
Type II certified
| Capability | Speechify | Cartesia |
|---|---|---|
| Pricing | From $0.07/min all-in — LLM included · 60 free min/mo | $0.06/min + $0.014/min telephony; LLM free is a promo |
| LLM cost | Included, no passthrough — permanent | Free for now (limited-time promo) |
| Free tier | 60 min/mo, commercial use | 20K credits/mo, no commercial use on Free |
| Workflow editor | Visual + code, deterministic | Build-your-own |
| Integrations | Tool calling + webhooks | Build-your-own |
| Voice library | 20+ curated real-time voices | Sonic voices (cloning on paid tiers) |
| Compliance | SOC 2 Type II | SOC 2 |
The verdict
Cartesia is a strong pick if raw latency and a low base rate matter most and you're comfortable assembling telephony, orchestration, and integrations yourself — and re-checking the price when the LLM promo ends. Speechify is the better fit for a complete, permanently all-in platform with workflows, integrations, and compliance.
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