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Synthflow

No-code, agency white-label king

From $2,500/mo

Facts verified Jul 15, 2026Try Synthflow

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What we know about Synthflow

Synthflow is a voice ai platform: no-code, agency white-label king. This profile tracks what we have verified about Synthflow, each fact linked to a primary source and dated.

On pricing, Synthflow starts at $2,500 per month for its entry tier. That is the sticker rate: real production cost usually runs higher once you add a language model, a voice provider, and telephony minutes. Every Synthflow comparison on the site works from that all-in figure rather than the headline number, because the headline number is rarely what the invoice says.

On capabilities, Synthflow covers annual contract required for best pricing?, native sip trunking, native outbound campaigns, built-in knowledge base, buy/port numbers in-platform, and gdpr tooling / eu residency, and does not offer self-serve signup. Each of those is verified against Synthflow's own docs or dashboard, not marketing copy.

In total we track 15 verified facts for Synthflow today, and add coverage as the ingestion pass revisits it. Where a number is a vendor claim rather than our own measurement, it is labeled as such on the Synthflow fact sheet below, and each row links the primary source it came from so you can check our work.

Whether Synthflow is the right call depends on your use case more than any single spec, which is why the head-to-head verdicts below score it per scenario rather than crowning one overall winner. Use the fact sheet for the raw numbers, and the matchups for how Synthflow actually fares against the platforms buyers most often weigh it against.

Fact sheet

Pricing
Pricing facts
Monthly platform fee~$2,500Jul 15
Annual contract required for best pricing?✓ YesJul 15
Capabilities
Capabilities facts
Native SIP trunking✓ YesJul 15
Native outbound campaigns✓ YesJul 15
Built-in knowledge base✓ YesJul 15
Languages supported~30 countriesJul 15
Buy/port numbers in-platform✓ YesJul 15
Compliance & trust
Compliance & trust facts
GDPR tooling / EU residency✓ YesJul 15
Build experience
Build experience facts
No-code agent builder✓ YesJul 15
API-first (full lifecycle via API)✓ YesJul 15
Simulation/testing suite for agents✓ YesJul 15
White-label / sub-accounts for agencies✓ YesJul 15
Native integrations count (+ key ones: GHL, HubSpot, Zapier, Make, Twilio)Cal.com, GoHighLevel, HubSpot, Salesforce, ZapierJul 15
Commercial
Commercial facts
Self-serve signup✗ NoJul 15
Support tier / SLA on base plansEnterprise SLA scoped in contractJul 15

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TTS in this stack

A voice agent's voice quality and per-minute cost come from its text-to-speech engine. See how dedicated engines compare on price, latency, and cloning rights: ElevenLabs, Cartesia, OpenAI TTS, or the full text-to-speech comparison →