Synthflow AI

Imagine automating millions of customer calls with AI that sounds indistinguishable from a human.

RecommendedSynthflow AI provides a powerful and highly scalable platform for automating voice interactions, tailored for enterprise needs with strong compliance and performance guarantees.

Synthflow AI is a leading AI Voice Platform for enterprises, offering fully tested, high-performance AI voice agents to automate phone conversations at scale. It replaces manual call handling with fast, reliable, and human-like interactions, making customer support scalable, cost-efficient, and easy to deploy.

Visit Synthflow AI

Visit Synthflow AI

Key Features:

High-performance AI voice agents for customer service, reception, and more
Flexible pricing with Pay As You Go and Enterprise plans
Support for various LLMs (GPT-4.1, GPT-5, etc.) and Bring Your Own LLM
Advanced telephony options including Synthflow Native, Twilio, and SIP Trunking
Enterprise-grade compliance (SOC2, GDPR, ISO 27001, HIPAA) and SLA 99.99%

Pros

Enterprises handling 10,000+ minutes/month of customer service calls
Businesses needing scalable and compliant AI receptionists or answering services
Organizations looking to automate appointment setting and IVR systems with AI

Cons

Pay As You Go plan has limits on concurrent calls (5 by default)
White-labeling is an add-on for PAYG, included only in Enterprise
Most advanced compliance features are exclusive to the Enterprise plan

Pricing

freemiumFree tier

Starting at:$0/month (usage-based after launch)

Free tier:Free to create an account and build/test agents; usage charges apply for calls/messages.

Plans

Pay As You Go: Free to start, then usage-based (approx. $0.15-$0.24/min), 5 concurrent calls, compliance (SOC2, GDPR, ISO 27001)
Enterprise: Custom pricing for 10,000+ minutes/month, guaranteed 99.99% Uptime & SLA, unlimited concurrent calls, advanced compliance, white label

Trial:Free to build and test agents, payment details required for production deployment.

Categories:

Customer Support Chatbots & Assistants Business & Enterprise

Tags:

voice ai call automation customer service receptionist answering service IVR enterprise AI conversational AI

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Quick Decision

Try if: You need a robust, scalable, and compliant AI voice solution for high-volume customer interactions, especially if you prioritize pre-tested agents and enterprise-grade features.

Skip if: You are a small business with low call volumes, or you are looking for a completely free solution for production use.

Not for: Individuals or very small businesses with minimal call volumes; Users seeking a free, fully-featured AI voice solution for production use; Those who prefer to build their voice AI from scratch without pre-tested agents

Trust Signals

Team Size
small

Compliance

SOC2GDPRISO 27001HIPAA

Notable Customers

Freshworks

Tech Details

Platforms

webapi

Integrations

TwilioCal.comGoHighLevelHubSpotSalesforceZapier

AI Model
GPT-4.1, GPT-5.1, GPT-5, GPT-4.1 mini, Bring Your Own LLM

Open Source

Support

Channels

ticketing systemdedicated support (Enterprise)Slack channel (Enterprise)help centerdocumentation

Company

Name
Synthflow AI

Synthflow is the leading AI Voice Platform for enterprises. Our AI voice agents automate phone conversations at scale — replacing manual call handling with fast, reliable, and human-like interactions. Using AI, we’re transforming how businesses manage calls, making customer support scalable, cost-efficient, and easy to deploy in weeks.

FAQ

How much does Synthflow cost per minute?

Most pay-as-you-go (PAYG) setups fall between $0.15 and $0.24 per minute, depending on your LLM and telephony selections.

Is Synthflow AI free?

Yes, it’s free to create an account and build your agent. Usage charges apply only when you make calls or send messages.

Can I use my own Twilio account with Synthflow AI?

Yes, Bring Your Own Twilio is free. You can also use Synthflow-managed Twilio for $0.02/min, or upgrade to Enterprise for Synthflow Native Telephony.

How do I scale concurrent calls with Synthflow AI?

The PAYG plan includes 5 concurrency units by default, with additional units available for $20/unit/month. The Enterprise plan offers unlimited concurrency.

What is the difference between Pay As You Go and Enterprise plans?

Pay As You Go is usage-based, ideal for builders and small deployments, with standard SLA and ticketing support. Enterprise is for high-volume teams (10,000+ minutes/month), offering guaranteed 99.99% uptime, unlimited concurrency, advanced compliance, and dedicated support.

Use Cases

Enterprises handling 10,000+ minutes/month of customer service calls
Businesses needing scalable and compliant AI receptionists or answering services
Organizations looking to automate appointment setting and IVR systems with AI