Synthflow AI vs Dograh AI : Which is Best For You in 2025?

Enterprises implementing AI - driven voice solutions in their business 25% of enterprises using Generative AI forecast to deploy AI agents in 2025. The global Voice AI Agent market is projected to reach $47.5 billion by 2034, growing at a 34.8% compound annual growth rate (CAGR) from 2025 to 2034. 15% of organizations are already building voice AI agents, and 98% plan to move them into production within the next year.

In this blog, we compare two top voice automation platforms Dograh AI and Synthflow AI. We’ll dive into their key features, performance, integrations, user experience, and pricing to help you understand what each offers. By the end, you’ll know which platform best fits your voice automation needs.

Start with Dograh

Try Dograh – Your Voice, Our AI

Book a Call

In-depth Synthflow AI vs Dograh AI Comparison

Around 51% of respondents are already using AI agents in production today. AI agents are rapidly evolving in customer service, healthcare and IT operation service automation. Open source platform like Dograh AI taking the edge in evolution of AI voice agent agent offering low latency and pre built template.

1. Dograh AI

Dograh stands out as a powerful open source alternative to Synthflow AI with several advantages :

• Free Open Source - Dograh is an free open source voice ai platform giving full flexibility to developers to customize, self host and extend features. Users should be able to try out in 1 line (should take <2mins ideally).
• 2 Min Launch - In the Create Workflow Dashboard, you can launch a voice agent in just 2 minutes by selecting inbound or outbound calls and writing “For the use cases of…” to describe your agent (e.g., qualify real estate leads, screen candidates, or handle customer support). This description becomes the LLM prompt, instantly generating your customized workflow.
• Pre Built Template - Dograh’s Pre-Built Templates let you launch an AI voice agent in just 2 minutes without writing any code or prompts, with easy customization through a global node for user-specific preferences.
• Global Node - The global node enables users to tailor their voice agents with specific preferences, such as updating industry names or applying custom modifications for personalization.
• License - Dograh AI is released under the BSD 2-Clause License, the same license as its foundational projects, ensuring full compatibility and the freedom to use, modify, and distribute.
• Easy to Use and Dependability - With AI to AI testing (over calls) and feedback loop through call summary, it is fairly easy to build extremely dependable bots with Dograh AI. Also this helps cut down on time needed to build the voice agent, and significantly improves time to market.
• LoopTalk - Think AI calling AI. Dograh’s LoopTalk auto-tests voice bots using AI-driven customer personas to simulate real-world scenarios boosting accuracy and letting you get started in minutes.
• No Double Billing - Dograh offers transparent pricing with no double billing charges for STT, TTS and LLM. And the open source solution is free to host and use.
• End-to-End Support - Dograh’s professional team offers end-to-end support from integration and workflow setup to analytics and optimization.
• Faster Setup - Dograh offers drag and drop workflow builder UI and prebuilt workflow as per your business needs.

Join

Getting started with Dograh

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

Synthflow AI  Vs Dograh AI Detailed Comparison

Voices

Dograh Voice AI supports multilingual voice agents, so that users can connect with global audiences effortlessly. Powered by top STT and TTS providers, conversations feel natural and fluent. Plus, you can choose your own voice to match your brand’s tone.

Customization Options

Dograh AI offers users full flexibility to customize their voice agents. The platform supports integration with any TTS/STT provider, allowing brands to choose custom voices, languages and conversation styles that match their identity and workflows. Users can also define unique personas, tones and fallback logic tailored to different scenarios whether for sales, support or internal automation.

Interface & Setup

In the Create Workflow Dashboard, you can launch a voice agent in just 2 minutes by choosing inbound or outbound calls and describing its use case (e.g., qualifying real estate leads, screening candidates, or handling support). This description becomes the LLM prompt to auto-generate a custom workflow. Dograh AI’s intuitive no-code, drag-and-drop builder lets users design conversational flows, arrange logic nodes (Start Call, Agent Response, End Call), and connect decision branches to enable advanced multi-agent setups.

The system also includes features like call run history, LoopTalk to test the voice agent, debugging tools for past conversations and the ability to export workflows in shareable formats like JSON.

Top 10 Vapi AI Alternatives & Competitors in 2025

Vapi’s voice automation platform suits developers but suffers from high costs & scalability issues. With a 2.6 Trustpilot rating and layered pricing ($0.23–$0.33/min), many seek better alternatives like Dograh AI. This blog explores Vapi’s drawbacks and more affordable, scalable options.

Dograh AIDograh AI

Performance & Scalability

Dograh AI is built for high performance and effortless scalability, making it ideal for real-time voice AI in business environments.

Performance Metrics :

1. Response Time - Consistently low latency < 600 ms for real time conversations.
2. Call Volume Capacity - Multi agent workflow able to handle large numbers of simultaneous interaction.
3. Accuracy - High transcription and intent recognition accuracy.
4. Reliability - Automated scaling and continuous monitoring help prevent downtime and slow performance, ensuring smooth and uninterrupted business operations.

Dograh AI dynamically auto-scales based on real-time demand, ensuring efficient resource use, reduced costs and consistently low latency under 600ms for reliable performance.

Vapi Pricing Breakdown 2025: Plans, Hidden Costs & What to Expect

Vapi is a flexible voice AI platform for developers, but its pricing can be tricky. This blog breaks down Vapi’s plans, hidden costs and extra charges with real examples plus a comparison with Dograh, a free open-source alternative for building voice workflows.

Dograh AIDograh AI

Integration Capabilities

Dograh offers seamless, plug-and-play integration with popular CRM platforms such as Salesforce, Zendesk, HubSpot and more. This enables AI agents to instantly access customer data during calls for real-time personalization, while automatically syncing call logs, outcomes and notes back to your CRM.

The platform offers strong telephony integration, allowing you to connect your existing SIP trunks, VoIP providers or cloud telephony services such as Twilio and Vonage.

Customer Support & Security

Dograh’s dedicated professional support team ensures your Voice AI runs seamlessly from initial setup to ongoing updates with fast and reliable assistance. Data privacy is a core priority, and Dograh’s open-source framework is built to meet strict GDPR and HIPAA compliance standards, keeping your information secure at all times.

Use Cases

• Real Estate Agent
• Customer Support
• Sales and Marketing Automation
• Tech Support
• Finance, Insurance and Banking
• E-Commerce
• Healthcare
• Logistics & Home Services
• Travel & Hospitality

AI Cold Calling Real Estate Script & Best Practices | Boost Leads with Voice AI

AI cold calling is transforming real estate prospecting with scalable outreach, personalized conversations, and 24/7 engagement. Agents close more deals faster, with properties seeing a 22% sales boost. 97% of SMBs report higher revenue and better client engagement using AI voice agents.

Dograh AIDograh AI

2. Synthflow AI 

Getting Started with Synthflow AI

Synthflow AI agents can be deployed in under 3 weeks as per company claim with no engineering support required. With dedicated support from AI Voice experts and calls starting at $0.08/min with no hidden charges. To get started you need to:

• Sign Up : Register on Synthflow AI website and choose your free trial or plan as per your needs. No registration fees required, get access to dashboard for resources and live support.
• Acquire a Phone Number : Buy a number directly in Synthflow (available in the US, Canada, and Australia, other regions connect via Twilio).
• Create your AI Agent : Build from scratch for complete control, use Quick Assistant Setup for guided creation, or choose from pre-built templates by industry, action type, or popularity for faster deployment.
• Configure your Agent : Fine-tune prompts, flows, and integrations, choose call behavior, and link CRMs, calendars, or APIs for smarter automation.
• Deploy your Agent : Connect a number or SIP trunk (Twilio, Telnyx, 3CX), deploy via API or web widget, and test calls in simulation before launch.
• Monitor and Improve : Use built-in analytics, transcripts, and recordings to track calls and improve agent performance.

Voices

Synthflow’s Voice Configuration lets you create natural, engaging AI voices by customizing tone, pacing, and emotion. Also allow users to choose the language, select or clone a voice, and fine-tune details like timing, expressiveness, and stability. Choose or clone voices across 30+ languages, including English (US, UK, AU), Spanish (EU, LATAM), French, German, Hindi, Portuguese (European and Brazilian), Japanese, Italian, Dutch, Greek, Polish, Swedish, Norwegian, Danish, Finnish, Romanian, Bulgarian, Czech, Slovak, Turkish, Ukrainian, Mandarin, Korean, Malay, Thai, Vietnamese, Indonesian and Russian, for smooth, low-latency multilingual conversations.

Speech Modeling

Synthflow uses advanced speech modeling to create realistic, customizable AI voice agents for real-time business use. Users can select a language, choose or import a custom voice, and fine-tune traits like patience, stability, and tone. Voice Prompting allows control over pacing, emotion, and style, while latency settings help balance speed and quality.

Personalization Options

Synthflow offers deep personalization features, enabling users to design AI voice agents that align perfectly with their brand, business goals, and customer experience.

• Voice and Language Personalization : Users could choose from various AI voices, accents, and languages or clone their own. They could fine-tune tone, pacing, and emotion for natural, brand-aligned interactions.
• Agent Behaviour and Conversational Flow : Users could visually design conversations with drag-and-drop logic, set agent behavior for pauses and interruptions, and define tone and fallbacks through prompt engineering.
• Knowledge Base and Brand Alignment : Users could link agents to knowledge bases, CRMs, or data sources for personalized responses and configure core branding and data sync settings.
• Customs Actions and Integrations : Users could integrate with 200+ apps like HubSpot, Zapier, and Salesforce to trigger workflows and use custom APIs for dynamic, personalized conversations.

Interface and Setup

With Synthflow user friendly interface, you can create AI-powered voice agents to automate and improve business communications across industries. Key use cases include:

What You’ll Build with Synthflow :

• Customer Support: Handle common issues, answer questions, and provide 24/7 assistance, freeing agents to focus on complex cases.
• Call Centers: Handle peak call volumes, cut wait times, and boost first-call resolution, scaling support without expanding your team.
• Appointment Scheduling: Automate booking, rescheduling, and calendar management while sending reminders to reduce no-shows and ease staff workload.
• Sales: Automate outbound calls, qualify prospects, and deliver high-intent leads to your team, boosting pipeline without adding headcount.
• Healthcare: Automate patient intake, reminders, and follow-ups via voice, enhancing access while maintaining efficiency and security.
• Banking: Automate account updates, transaction details, and real-time fraud alerts, delivering secure and reliable voice interactions for customers.

Limitations :

• Synthflow Test Call Error: A Reddit user reported, "When I go to test the call, the call will be successful with the target phone number, but when I try a different target phone number it gives me an error."
• Slow Tech Support: Users report that tech support can take over 24 hours to respond, and replies often come with more questions rather than solutions. One user shared, "I went through this loop twice before finally closing my account."
• Persistent Synthflow Branding: Despite promises, Synthflow’s logos and branding continue to appear across the platform, including on client-facing interfaces.

Performance & Scalability

Synthflow is built for high performance, low latency, and enterprise scalability, perfect for managing large call volumes. It supports tiered concurrency limits: Starter (10), Pro (25), Growth (50), Agency (100), and Enterprise (100+ with priority queuing, customizable beyond 200). Its dedicated telephony infrastructure ensures stable voice quality, accuracy, and responsiveness even during peak loads.

Synthflow Integration Capabilities

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.

Synthflow Security and Compliance

Synthflow offers comprehensive security and compliance capabilities built for enterprise-scale, and high-sensitivity environments across regulated sectors such as finance and healthcare.

• SOC 2, HIPAA, and GDPR Compliant : Fully aligned with US and EU data standards, ensuring your sensitive information is protected with robust security and built-in privacy safeguards at every interaction.
• PCI DSS Compliant : Safeguard payment and cardholder data with built-in PCI DSS compliance, ensuring secure handling for transactions, account verification, and other sensitive workflows.
• In-House Data Management : All customer data and call logs are encrypted and stored internally, never shared with third parties, giving you full control and compliance.
• Strict Guardrails, Zero Hallucinations : AI relies only on verified knowledge sources, delivering accurate, brand-safe responses without off-script or speculative answers.

Synthflow Customer Support

Synthflow delivers powerful, multi-channel customer support, prioritizing rapid, AI-driven automation for efficient service.

• Direct Support Via Email : https://synthflow.ai/talk-to-sales
• Synthflow Academy : https://academy.synthflow.ai/
• Synthflow Help Center : https://helpcenter.synthflow.ai/

Use Cases

• Appointment Scheduling and Management
• Sales and Lead Qualification
• Healthcare
• Banking and Financial Services
• Public Sector and Utilities
• Data Collection & Survey

A better alternative to Synthflow, Vapi Ai - Dograh AI

If you’re exploring conversational automation or looking for a Synthflow alternative, Dograh AI stands out as a top choice.

Key Features

• NEPQ led Sales - Uses Neuro-Emotional Persuasion Questioning (NEPQ) to drive deeper engagement and guide conversations effectively.
• Real-Time Response - Dograh enables low-latency (<500ms), human-like voice conversations for seamless user interactions.
• Longer Conversation - Dograh multi-agent bots can handle calls up to 45 minutes, maintain full context throughout conversations without hallucinations.
• Human Like Speech - Pauses, Filler words & clear tone for realistic, engaging voice interactions.
• Emotionally Effective - Understand user concerns by actively empathizing and probing their pain points to deliver more personalized, effective voice interactions.
• Tailor-Made Build - Dograh experienced team offers hands-on support to help you design and deploy custom voice agents tailored to your scripts and business needs.
• Multilingual Voice Support - Support multilingual voice agents using top STT and TTS providers, enabling natural and fluent conversations for diverse global audiences.
• Expert Cloud Support - Get expert cloud support with Dograh test and refine your voice agent in real time using our intuitive, cloud-hosted interface.
• Flexible Deployment Option - Dograh supports both cloud and open-source deployments, giving you flexibility based on your business and technical needs.
• Customer Support - Dograh’s dedicated support team ensures your Voice AI runs smoothly from setup to ongoing updates with fast, reliable assistance.
• Data Privacy - Your data privacy is our top priority. Dograh’s open source solution helps adhere to strict GDPR and HIPAA standards to keep your information secure and fully compliant.

Synthflow vs Dograh AI : Pricing Compared

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.

Cost Estimate : 

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.

What are the customers saying ?

Synthflow simplifies outbound calling with an easy, user-friendly setup and excellent call quality. Campaigns can be launched quickly without any developer work, and the clean, intuitive dashboard makes navigation simple. Analytics could be more detailed, particularly for call performance and conversions, and additional native integrations would be helpful instead of relying on Zapier. Still, for a newer platform, it’s already performing impressively.

Synthflow AI Reviews

Dograh AI reviews

FAQ's