Voice Agents · Compare
Speechify vs Synthflow
Synthflow is a no-code voice-agent builder; real-world setups land $0.15–0.24/min once you add the voice engine ($0.09/min), LLM, and telephony. Speechify is all-in from $0.07/min with LLM included — roughly half the cost — plus deterministic workflows, tool calling, evals, and enterprise governance, and 60 free minutes a month.
Speechify
Synthflow
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 | Synthflow |
|---|---|---|
| Pricing | From $0.07/min all-in — LLM included · 60 free min/mo | $0.15–0.24/min typical ($0.09 voice engine + LLM + telephony) |
| What's included | LLM + STT + TTS + orchestration in one rate | Voice engine + per-minute LLM add-ons |
| Free tier | 60 min/mo, commercial use | Free to build; payment required to deploy |
| Workflow design | Visual + code, deterministic branching | No-code builder |
| Integrations | Tool calling + webhooks | Integrations + bring-your-own |
| Evals / tests | Simulated callers, regression suites | Limited |
| Compliance | SOC 2 Type II | SOC 2 |
The verdict
Synthflow is a fast on-ramp for non-developers who want a no-code builder. Speechify is the better fit when you need production-grade cost, deterministic workflows, evals, and the compliance and integration surface enterprises require.
More comparisons