Synthflow
What is Synthflow?
Synthflow is an AI voice automation platform for operations and CX teams that builds automated customer conversations across phone and chat. It combines AI agents, a Flow Designer, a Knowledge Base, Actions, and Test Calls to run reception, lead qualification, appointment booking, support, and IVR-style routing. It integrates with HubSpot, Salesforce, Zapier, Twilio, and Telnyx, and is used by Freshworks. Plans run Pay as you go free and Enterprise custom.
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At a glance
- Synthflow is best for operations and CX teams that need to automate high-volume phone conversations.
- Pay as you go Free; Enterprise Custom
What does Synthflow do?
Synthflow handles automated customer conversations by combining AI agents, a Flow Designer, a Knowledge Base, Actions, and Test Calls into a production calling pipeline. Teams can build assistants for phone and chat, then deploy them into live workflows for reception, lead qualification, appointment booking, support, and IVR-style routing. The marketplace and templates help teams start from tested call flows instead of building every interaction from scratch. At scale, Synthflow says it powers over 65M+ voice calls every month across 30+ countries and serves 130+ enterprises. Freshworks is one named customer, and the platform's integrations page says it connects telephony, contact center, and data systems across 200+ enterprise apps. The company positions the product for production environments and enterprise scale, with compliance references including SOC2, GDPR, ISO 27001, and HIPAA-compliant marketplace use cases. The developer docs and API docs are publicly linked from the footer.
Why use Synthflow?
- In-house telephony and a proven deployment framework reduce the number of tools needed to launch voice automation.
- The marketplace offers tested templates, so teams can start with real call flows instead of blank-agent builds.
- Enterprise options include 99.99% SLA, custom API rate limits, and flexible hosting for stricter rollout requirements.
- Public docs and API references make it easier to connect Synthflow into existing automation and developer workflows.
- The platform is already used by 130+ enterprises and powers 65M+ voice calls each month, which signals operational maturity.
Who is Synthflow for?
- Customer support teams who want to automate routine calls and route complex issues faster.
- Operations leaders who need scalable voice workflows across phone and chat.
- Contact center managers who want AI-assisted handling for reception, booking, and IVR.
- Enterprise teams who need compliant deployment options and controlled workflows.
- Developers who want API-connected voice automation with external systems.
What are Synthflow's key features?
Use Case
Maps voice AI to specific phone workflows, from missed-call handling to outbound follow-up, with examples from Freshworks and Hostinger deployments.
Flow Designer
Build call flows visually for production environments, then connect them to HubSpot, Salesforce, or Zapier for routing, logging, and follow-up.
Knowledge Base
Ground agents in your own content so they answer consistently across 30+ languages, which matters for multilingual support teams and global operations.
Actions
Trigger external tasks during calls using Custom Actions and integrations like Google Calendar, Stripe, and Airtable to book, charge, or update records.
Test Calls
Run test calls before launch to check prompts, routing, and telephony behavior with Twilio or Telnyx before moving into production.
AI agents
Deploy AI agents for automated phone calls at scale, with claims of 65M+ customer calls powered and support for 500K+ calls/month.
phone and chat
Handle omnichannel conversational workflows across phone and chat, connecting with Intercom, Zendesk, and OpenAI for consistent customer interactions.
enterprise scale
Support enterprise deployments with 99.99% uptime, SOC 2, GDPR, and ISO 27001 compliance, plus custom workflows and API rate limits.
What does Synthflow integrate with?
- 8x8
- Make
- GoHighLevel
- HubSpot
- RingCentral
- Salesforce
- Zapier
- Freshworks
- Cal.com
- Google Calendar
- Microsoft Calendar
- Five9
- Genesys
- OpenPhone
- NICE
- Dialpad
- 3CX
- JustCall
- Cloudtalk
- Cisco
- Avaya
- Intermedia
- Zoho
- ActiveCampaign
- Monday.com
- Pipedrive
- Jobber
- Follow Up Boss
- Housecall Pro
- Dentrix
What are Synthflow's use cases?
Support teams route complex calls
Customer support teams use Synthflow to automate routine calls and hand off edge cases faster, using Flow Designer to map the call path and Actions to trigger the right next step. They can also use Knowledge Base to answer common questions consistently before a live agent steps in.
Reception and booking workflows
Contact center managers use Synthflow to handle reception, booking, and IVR flows, using AI agents to answer callers and Test Calls to refine the experience before launch. This helps reduce missed calls and keeps scheduling requests moving without adding front-desk load.
Omnichannel operations for teams
Operations leaders use Synthflow to run voice workflows across phone and chat, using phone and chat and Custom Workflows to keep customer interactions consistent across channels. That gives them a single automation layer for routing, follow-up, and service handoffs.
Enterprise voice deployment control
Enterprise teams use Synthflow to deploy voice automation with tighter governance, using enterprise scale and production environments to support controlled rollouts. They can standardize workflows across departments while keeping compliance and reliability requirements in view.
How does Synthflow work?
- Start by selecting a Use Case and opening the Flow Designer to outline the call journey. Add the first branch for greetings, routing, or qualification so the agent has a clear path.
- Load your Knowledge Base with the answers, policies, and product details the AI agents should use. Keep content organized so callers get consistent responses without manual lookup.
- Attach Actions to connect the agent with calendars, CRMs, or ticketing tools through your preferred integrations. Use Custom Actions when the workflow needs to create records, book meetings, or escalate cases.
- Run Test Calls to hear the experience end to end and catch awkward prompts, missing answers, or routing gaps. Iterate until the conversation sounds natural and reaches the right outcome.
- Deploy into production environments and monitor performance across phone and chat. Expand with Custom Workflows as teams add new queues, languages, or enterprise scale requirements.
How much does Synthflow cost?
Pay as you go
Free- Free to start, then usage-based
- Telephony: Synthflow Twilio / Bring Your Own Telephony
- 5 concurrent calls, then $20/reserved concurrency
- Compliance (SOC2, GDPR, ISO 27001)
- Unlimited Agents, API & Integrations
- Support via Ticketing
Enterprise
Custom- For scaling teams handling 10,000+ minutes/month. Purpose-built for reliability, scale and security.
- Guaranteed Uptime & SLA 99.99%
- SIP Trunking, Synthflow Native Telephony
- White Label & Reseller Toolkit
- Unlimited Concurrent Calls & Custom Workflows
- API Rate Limits: Custom + Priority
- Enterprise Onboarding, Training and Support
Frequently asked questions
What is Synthflow?
Synthflow is an AI voice automation platform for operations and CX teams that builds automated customer conversations across phone and chat. It combines AI agents, a Flow Designer, a Knowledge Base, Actions, and Test Calls to run reception, lead qualification, appointment booking, support, and IVR-style routing. It integrates with HubSpot, Salesforce, Zapier, Twilio, and Telnyx, and is used by Freshworks. Plans run Pay as you go free and Enterprise custom.
How much does Synthflow cost? Is it free?
Synthflow has a free plan, with paid tiers including Enterprise at Custom.
What is Synthflow used for? Who is it for?
Synthflow is used for Use Case, Flow Designer, and Knowledge Base. It's built for Customer support teams, Operations leaders, and Contact center managers.
Does Synthflow have an API and what does it integrate with?
Synthflow doesn't publish a public API. It integrates with 8x8, Make, GoHighLevel, HubSpot, RingCentral, and 25 more.
Editor's read
Check the concurrency ceiling on Pay as you go: it includes 5 concurrent calls, then adds $20 per reserved concurrency. If your live call volume is expected to exceed that, verify whether Enterprise's unlimited concurrent calls and custom workflows are the baseline you need.
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