# Synthflow

A voice AI platform for building agents that handle inbound and outbound calls, answer questions, book appointments and hand calls to people, with its own telephony. Chat agents can also run in a website widget, on WhatsApp and over SMS.

> **We make Vocenya. Here’s how we rank, and where others may fit you better.** Every vendor here, ours included, is shown with the same fields, sourced from its own website and ordered by the same published rule. Nobody pays to be listed. Where another tool may fit you better, we say so.

- Website: https://synthflow.ai
- Type: Developer platform
- Last checked: 2026-10-03

## Facts

- **Starting price:** From $30,000/year (Sales-led pricing: Enterprise contracts start at $30,000 a year, scoped around call volume, concurrency, telephony, integrations, security and launch support. No self-serve plan prices are published.). Source: https://synthflow.ai/pricing, checked 2026-10-03
- **Free trial:** Free to build (The site says you can build an agent for free from templates; paid pricing is quoted by sales.). Source: https://synthflow.ai/, checked 2026-10-03
- **Languages:** English, Spanish, French, German, Portuguese, Italian, Dutch, Hindi, Russian, Japanese, Mandarin, Korean (Docs list over 30 languages, plus a multilingual mode that switches between 10 of them.). Source: https://docs.synthflow.ai/about-supported-languages, checked 2026-10-03
- **HIPAA / BAA:** Yes (BAA signed at contract signing for customers who use the HIPAA Setting to process PHI.). Source: https://docs.synthflow.ai/baa, checked 2026-10-03
- **Integrations:** Salesforce, HubSpot, Zapier, Cal.com, GoHighLevel. Source: https://synthflow.ai/pricing, checked 2026-10-03
- **Books appointments:** Yes (Real-time booking, including Cal.com.). Source: https://synthflow.ai/, checked 2026-10-03
- **Transfers to a person:** Yes. Source: https://docs.synthflow.ai/transfer-calls-to-humans, checked 2026-10-03
- **Two-way AI texting:** Yes (SMS chat agents need your own Twilio account.). Source: https://docs.synthflow.ai/launch-chat-agents, checked 2026-10-03
- **Website chat:** Yes. Source: https://docs.synthflow.ai/launch-chat-agents, checked 2026-10-03

## Who it is for

Larger businesses and contact centers that want a sales-scoped voice and chat agent deployment with implementation support.

## Worth knowing

- Pricing is quoted by sales; Enterprise contracts start at $30,000 a year. (source: https://synthflow.ai/pricing)
- SMS and WhatsApp chat agents require the business’s own Twilio account. (source: https://docs.synthflow.ai/launch-chat-agents)
- HIPAA coverage depends on the customer enabling the HIPAA Setting for workflows with PHI. (source: https://docs.synthflow.ai/baa)

## Alternatives

- [Allo](https://vocenya.com/ai-tools/allo): Small teams that want a business phone system and an AI receptionist on the same number, with CRM sync to HubSpot or Salesforce.
- [Dialzara](https://vocenya.com/ai-tools/dialzara): Small businesses that want low-entry, minute-based AI call answering with optional SMS and chat agents.
- [Rosie](https://vocenya.com/ai-tools/rosie): Solo owners and small businesses that want minute-based AI call answering in English and Spanish with website chat included.
- [Smith.ai](https://vocenya.com/ai-tools/smith-ai): Law firms and other small businesses that want per-call pricing with the option to hand calls to human receptionists.
- [Vocenya (our product)](https://vocenya.com/ai-tools/vocenya): Local service businesses and practices in New Jersey and New York that want an AI receptionist with a staffed human team behind it, including healthcare practices that need a BAA.

## Sources

- Synthflow home: https://synthflow.ai/ (checked 2026-10-03)
- Synthflow pricing: https://synthflow.ai/pricing (checked 2026-10-03)
- Synthflow docs: https://docs.synthflow.ai/ (checked 2026-10-03)
- Synthflow supported languages: https://docs.synthflow.ai/about-supported-languages (checked 2026-10-03)
- Synthflow BAA: https://docs.synthflow.ai/baa (checked 2026-10-03)
- Synthflow call transfers: https://docs.synthflow.ai/transfer-calls-to-humans (checked 2026-10-03)
- Synthflow chat agents: https://docs.synthflow.ai/launch-chat-agents (checked 2026-10-03)

---

Source: https://vocenya.com/ai-tools/synthflow
Published by Vocenya, which makes an AI receptionist. How this directory is built: https://vocenya.com/ai-tools/methodology