Decoding Synthflow Pricing and Plans in 2025

Synthflow pricing includes Starter, Pro, Growth, Agency and Enterprise plan, pricing starts from $29/month and also offers 14 days free trial. However, some Reddit users have voiced concerns “Synthflow rates aren't accurate, they hit me with a bait and switch after I paid for the ‘$29/month’ services.” Pay-as-you-go (PAYG) charges apply for usage exceeding your plan’s included minutes, billed per minute at your configured rate.

Overage rates apply after included minutes, ranging from $0.12–$0.13 per minute on Pro, Growth and Agency plans.

This blog explains Synthflow’s pricing and compares it with leading alternatives like Dograh AI and others to help you choose the right AI phone agent platform for your needs.

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Synthflow Pricing at a Glance

Synthflow offers Starter, Pro, Growth, Agency, and Enterprise plans with a free 14-day trial. Overage rates apply after included minutes, ranging from $0.12–$0.13 per minute on Pro, Growth and Agency plans.

Core Pricing Structure Yearly

• Starter : Starter Plan ($29/mo) includes 50 minutes, 5 concurrent calls, Voice API, LLM and transcriber costs, unlimited assistants, API integrations, real-time booking, human transfer, and more. Access Voice AI courses, community support, and get a new phone number for $1.50.
• Pro : Pro Plan ($375/mo) ideal for businesses with low call volumes. Includes 2,000 minutes (then $0.13/min), 25 concurrent calls, 8,000 custom workflows, everything in Starter, workflow builder, team access, and ticket-based support. Extra concurrent calls cost $7 each.
• Growth : Growth Plan ($750/mo) designed for businesses with higher call volumes. Includes 4,000 minutes (then $0.12/min), 50 concurrent calls, 42,000 custom workflows, and 25 subaccounts. Offers everything in Pro plus rebilling, early access to new features, and ticket-based support. Extra concurrent calls cost $7 each.
• Agency : Agency Plan ($1,250/mo) a white-label solution for agencies and resellers. Includes 6,000 minutes (then $0.12/min), 80 concurrent calls, 100,000 custom workflows, and unlimited subaccounts. Offers a fully white-labeled platform, 30-day onboarding, a private Slack channel, and ticket-based support. Extra concurrent calls cost $7 each.
• Enterprise : Enterprise Plan (Custom Pricing) built for top-tier performance, scalability, and support. Offers volume-based rates as low as $0.08/min, SIP trunk integration, guaranteed uptime (SLA), custom integrations, and 200+ concurrent calls. Includes full compliance (SOC2, HIPAA, GDPR), a dedicated solution architect, and enterprise-level onboarding, training, and support. Extra concurrent call pricing is custom.

How Synthflow Pricing Works and Tiers Comparison

Synthflow pricing operates on a transparent, flat-rate monthly subscription model which includes call minutes, additional usage overages, and options for both small businesses and large agencies.

How Synthflow Pricing Works :

• Each plan includes a monthly fee that covers a set number of minutes, concurrent call limits, and access to essential features.
• After you exceed the included minutes, additional usage is billed at a fixed per-minute overage rate.
• Plans include features like a drag-and-drop workflow builder, LLM integration, premium support, number rental, and outbound call automation.
• Upgrade options are available for agencies, multi-account management, and enterprise-grade security and compliance.
• Enterprises and high-volume clients can access special discounts and customized pricing options.
• New users get a 14-day free trial to explore and test the platform’s features.
• Phone number rental costs a flat rate of $1.50 per number each month.

Top 10 Vapi AI Alternatives & Competitors in 2025

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Synthflow Pricing and Tiers Comparison 

Real Cost Breakdown

Synthflow Pro Plan - Cost Estimate, includes 2,000 minutes, 8,000 workflows, 25 concurrent calls, workflow builder, and team access with ticket-based support. Pricing: $0.13/min + $0.002 per workflow + $7 per concurrent call, totaling $375/month.

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Setup and Technical Needs

Synthflow offers powerful developer features designed for ease of use, flexible integrations, and seamless workflow automation.

• No-Code Visual Builder : Both developers and non-technical users can design and launch custom AI voice agents through an intuitive drag-and-drop interface, enabling rapid call flow creation without any coding.
• API and Custom Actions : Synthflow provides a REST API for seamless interaction with AI models through JSON, while custom actions enable dynamic call flows and automated workflows integrated with external systems.
• CRM Integrations : Synthflow integrates with leading CRMs (HubSpot, GoHighLevel), workflow platforms (Zapier, Make, Bubble, Cal.com), payment solutions (Stripe), and AI tools (ElevenLabs, OpenAI).
• Telephony Integrations : Telephony integration covers SIP trunking, Twilio, Telnyx, RingCentral, and on-premise PBX systems, available mainly with enterprise plans.
• Voice and Conversation Tuning : Synthflow offers ElevenLabs integration for branded voice customization.
• Dynamic Prompt Injection : Dynamic Prompt Injection lets you customize AI agent interactions in real time, delivering more personalized and context-aware conversations.

To create a new agent you have three options :

• Start from scratch: Users can fully customize their agent, this option works best for those who want to configure it themselves.
• Quick agent setup: Users can select a pre-built template, this option is ideal for those who want most of the setup done automatically. Agents can still be edited afterward.
• Browse templates: Users can explore existing templates, this option suits those looking for a ready-made configuration that meets their needs.

How to Calculate your Monthly Bill with Synthflow

Users can use the Synthflow cost estimation calculator to quickly determine pricing for their needs. It offers a simple and convenient way to estimate costs based on specific usage, helping businesses plan and budget effectively.

Pricing plans and Rebilling

Manage your subaccounts and track usage with customizable pricing plans. Connect Stripe, set monthly prices and currency, define included minutes, and optionally add products.

Note:

• You need an Agency Owner or Admin role.
• Stripe must be connected before creating plans.

Connect your Stripe account

1. On the left-hand sidebar, click Agency.
2. Click Pricing Plans.
3. Click Connect Stripe and complete the Stripe flow.

Amount

Plan fees are charged monthly. Taxes are applied in the US and Canada, while prices elsewhere include taxes. Check your Stripe tax settings for more details.

Currency

Choose the currency of your pricing plan. The available currencies are:

• United States Dollar ($)
• Euro (€)
• Canadian Dollar (CA$)
• Australian Dollar (A$)

Maximum Minutes Available

Specify the maximum call minutes a subaccount can use under this plan.

For instance, if a plan includes 6,000 minutes per month and the subaccount hits this limit, then either:

• Calls will fail if there are insufficient minutes, or
• Pay-as-you-go billing will apply (if enabled).

Pay-as-you-go

Pay-as-you-go (PAYG) charges apply for usage beyond the plan’s included minutes, billed at a configurable per-minute rate.

Products

Products such as agents and workflows can be included in a plan. When the plan is activated, Synthflow creates copies for the subaccount while keeping the originals unchanged. There is no limit to the number of products that can be added to a plan.

Pros and Cons of Synthflow Pricing

Pros

• Starter Plan : The Starter Plan is priced at $29/month and includes 50 minutes and 5 concurrent calls. New users also get a 14-day free trial to explore the features.
• Compliance : SOC 2 security and GDPR compliance are included with the Starter Plan, ensuring data protection and regulatory adherence.
• Overage Rates : Overage charges apply once the included minutes are used, ranging from $0.12 to $0.13 per minute on Pro, Growth and Agency plans.

Cons

• Lack of Transparent Pricing : Although Synthflow has published pricing, it also uses custom pricing for enterprise and some agency plans, making it harder for businesses to predict total costs or compare options accurately.
• Hidden Fees from Required Add-Ons : Users may need to connect external tools or integrations to access full functionality, which can raise the total cost of ownership beyond the base plans.

How Synthflow compares to Dograh AI

Dograh offers an open-source solution with no platform fees, making it more cost-effective, customizable, and scalable than Synthflow. It also includes prebuilt templates and can be launched in just 2 minutes.

What Dograh AI offers that Synthflow doesn’t

The Bottom Line: Is Synthflow Worth It ?

Whether Synthflow is worth it depends on a business’s needs, budget, and technical preferences. Overall, it offers strong value as a user-friendly, flexible AI voice assistant platform, though it has limitations, HIPAA compliance is not included in the Starter, Pro, Agency, or Growth plans.

Build a free AI Voice Agent with Dograh Today

Interested in leveraging Dograh for lead generation, cold calling or business automation ? Here’s a streamlined path to getting started, along with direct links to essential resources :

1. Dograh AI: Quick Start Demo

2. Run Docker Command

Download and Start Dograh first startup may take 2-3 mins to download all images

Docker

3. Quick Start Instructions

Step by step written guide to building and deploying your first voice AI Agent

• Open Dashboard: Launch http://localhost:3000 on your browser.
• Choose Call Type: Select Inbound or Outbound calling.
• Name Your Bot: Use a short two-word name (e.g., Lead Qualification).
• Describe Use Case: In 5–10 words (e.g., Screen insurance form submissions for purchase intent).
• Launch: Your bot is ready! Open the bot and click Web Call to talk to it.

4. Community & Support

Join Slack Community and discuss issue with Dograh experts :

Join Slack Community

5. Additional Resource

Cost Optimization Strategies

To optimize costs with Synthflow, users should choose plans based on their specific use cases and expected call volumes. Selecting the right tier helps avoid overpaying for unused minutes or features. For high call volumes, opting for scalable or custom plans ensures better value and predictable billing.

Final Thoughts

Overall, Synthflow’s billing structure offers flexibility through tiered and custom plans suited for different business needs. However, users should carefully assess usage patterns, integrations, and compliance requirements to avoid unexpected costs. Choosing the right plan based on call volume and feature needs ensures better value and cost efficiency.

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