Synthflow vs Smith AI: Who wins in 2025?

Synthflow - a quick overview

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Synthflow AI was founded in 2023 by Hakob Astabatsyan, Albert Astabatsyan, and Sassun Mirzakhan-Saky in Berlin, Germany. The company specializes in creating no-code AI voice assistants that help businesses automate customer interactions, such as appointment scheduling and customer support. Synthflow AI serves nearly 1,000 customers and targets small and medium-sized enterprises (SMEs) looking to streamline their communication processes.

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The platform allows users to easily create and deploy AI voice assistants without needing technical expertise, offering features like real-time booking and seamless integration with CRM platforms. Synthflow AI has secured $9.1 million in funding, including a $7.4 million seed round, to enhance its platform and expand into non-English speaking markets.

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In the following section, we’ll explore Synthflow AI’s features, pros and cons, pricing, and user reviews, comparing them with other AI voice assistant platforms like Smith AI and Ringly.io. This comparison will help you understand where Synthflow AI stands and whether it's the right choice for your business needs.

Synthflow's Features

• No-Code Interface
  Synthflow offers a user-friendly, no-code platform that allows businesses to create and deploy AI voice agents without technical expertise. This is ideal for companies seeking quick implementation of AI solutions. While this feature is comparable to Ringly.io’s ease of setup, Synthflow lacks the advanced e-commerce-specific automations like abandoned cart recovery offered by Ringly.io[2][5].
• Multilingual Support
  With support for over 90 languages, Synthflow enables global customer engagement. This surpasses Smith AI’s limited multilingual capabilities but falls short compared to Ringly.io's seamless integration with e-commerce platforms for localized customer interactions[3][7].
• Advanced CRM Integrations
  Synthflow integrates natively with CRMs like HubSpot and Zoho, streamlining workflows by syncing data automatically. However, it does not match the depth of custom actions available in Ringly.io, which connects with over 7,000 tools via Zapier or Make.com[2][6].
• Customizable Voice Options
  Businesses can choose from a wide range of voices tailored to their needs. While this enhances personalization similar to Ringly.io’s customizable agent voices, it lacks the specific focus on creating human-like connections during calls that drive conversions in e-commerce settings[7][8].
• Scalability and Concurrent Call Handling
  Synthflow supports millions of concurrent calls with low latency (<500ms), ensuring smooth operations even during high call volumes. This scalability is impressive but does not address specialized features like real-time order status checking or smart call transfers found in Ringly.io[3][6].
• Workflow Customization via Drag-and-Drop Tools
  The platform provides an intuitive drag-and-drop interface for customizing workflows quickly. Although flexible for general use cases, it doesn’t offer pre-built templates optimized for sales recovery or support automation as seen in Ringly.io[5][6].
• Cost-Saving Automation
  By automating repetitive tasks and high-volume calls, Synthflow claims up to 50% operational cost savings. However, these savings are less impactful compared to the revenue-driving features such as abandoned cart recovery provided by Ringly.io that directly boost sales performance while reducing manual intervention[2][6].

While Synthflow excels at providing scalable voice AI solutions with robust multilingual capabilities and CRM integrations suitable for diverse industries, its lack of specialized e-commerce functionalities makes it less competitive against platforms like Ringly.io when addressing specific business needs such as sales conversion and customer satisfaction enhancement through automation-driven phone agents.

Pros

• User-Friendly Interface Synthflow is praised for its intuitive design that allows even non-technical users to navigate easily without a steep learning curve.
• Customizable AI Conversations The drag-and-drop flow builder enables highly customizable conversations, making it suitable for diverse industries.
• Natural Language Processing (NLP) Users highlight the platform’s ability to deliver natural, human-like responses in conversations, enhancing customer engagement.
• Seamless Integration with Third-party Tools Synthflow integrates effortlessly with CRMs and other business tools like Zapier, streamlining workflows.
• Strong Customer Support Many users appreciate the responsive support team and comprehensive documentation that make onboarding smooth.

Cons

• High Pricing Tiers Users frequently mention that the jump between pricing plans (e.g., Starter to Pro) is significant. This can be a barrier for smaller businesses or those testing the platform.
• Occasional Performance Issues Some reviewers report lagging or freezing during complex edits or while typing prompts. These disruptions can hinder productivity during critical tasks.
• Limited Advanced Customization Options Power users feel that more advanced features could enhance flexibility further for complex use cases.
• Analytics Could Be Improved Enhanced reporting capabilities are needed to better optimize bot performance according to some feedback from experienced users.
• Testing Restrictions on Voice Agents Testing voice agents requires adding a phone number instead of allowing browser-based testing—a limitation compared to some competitors offering free browser tests.

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Smith AI - a quick overview

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Smith.ai was founded in 2015 by Aaron Lee and Justin Maxwell. The company is headquartered in Los Altos, California, and offers AI-driven virtual receptionist services, combining live agents and AI for 24/7 customer engagement. Smith.ai serves over 3,000 businesses, primarily targeting small to medium-sized businesses across various industries. Its services include lead qualification, appointment scheduling, and CRM integration, helping businesses manage customer interactions efficiently.

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In the following section, we’ll explore Smith.ai’s features, pros and cons, pricing, and user reviews, comparing them with other similar services like BirchAI and Aloware. This comparison will help you understand where Smith.ai stands and whether it's the right fit for your business needs.

Smith AI's Features

• 24/7 Virtual Receptionists
  Smith AI provides round-the-clock call answering with a blend of AI and human agents. This ensures businesses never miss a call, even outside business hours. It’s ideal for industries like law firms or home services that require constant availability. While Synthflow also offers 24/7 automated support, it lacks the hybrid human-AI approach, which can provide a more personalized touch. Ringly.io surpasses both by offering real-time updates from your knowledge base, ensuring accurate responses without requiring human intervention.
• AI-Powered Lead Screening
  Smith AI uses proprietary AI to qualify leads based on custom criteria before forwarding them to sales teams. This feature is excellent for filtering out unqualified prospects and saving time for businesses with high lead volumes. Synthflow focuses more on automating conversations but doesn’t emphasize lead qualification as strongly as Smith AI does. Ringly.io takes this further by integrating abandoned cart recovery calls directly into its workflow, actively converting leads rather than just screening them.
• Appointment Scheduling
  Virtual receptionists at Smith AI can book appointments directly into calendars using integrations like Google Calendar or Calendly. This streamlines scheduling processes for busy professionals such as consultants or doctors. While Synthflow also supports appointment booking during calls via integrations like HubSpot and Zapier, it lacks the seamless hybrid execution of Smith AI’s live agents combined with automation tools. However, Ringly.io excels in this area by automating order status checks alongside scheduling tasks—offering broader functionality in customer interactions.
• Outbound Call Campaigns
  Smith AI enables outbound calling campaigns to engage leads proactively and follow up on opportunities effectively—a strong feature for sales-driven businesses aiming to boost conversions through direct outreach efforts. Although Synthflow supports outbound calls too, its focus is primarily on scripted automation rather than tailored campaigns driven by trained agents like those at Smith AI. In contrast, Ringly.io leverages abandoned cart recovery calls that are highly targeted and proven effective in driving revenue growth.
• Spam Call Blocking
  This feature blocks millions of spam numbers automatically so clients aren’t charged unnecessarily—a cost-saving advantage particularly useful for small businesses managing tight budgets or high call volumes prone to spam interference. Neither Synthflow nor Ringly.io explicitly offer similar spam-blocking capabilities; however, Ringly.io compensates with features like smart call transfers that ensure only relevant queries reach your team efficiently.
• Call Transcription & Summaries
  Smith AI transcribes calls in real-time while providing detailed summaries accessible via dashboards—helpful for tracking client interactions and improving service quality over time through actionable insights from past conversations. Similarly, Synthflow offers transcription services but focuses less on summarization analytics compared to Smith's robust reporting tools here; meanwhile, Ringly.io stands out with advanced analysis features such as mood detection during calls paired seamlessly alongside daily content updates from integrated knowledge bases.

Pros

• User-Friendly Interface Synthflow is praised for its intuitive design that allows even non-technical users to navigate easily without a steep learning curve.
• Customizable AI Conversations The drag-and-drop flow builder enables highly customizable conversations, making it suitable for diverse industries.
• Natural Language Processing (NLP) Users highlight the platform’s ability to deliver natural, human-like responses in conversations, enhancing customer engagement.
• Seamless Integration with Third-party Tools Synthflow integrates effortlessly with CRMs and other business tools like Zapier, streamlining workflows.
• Strong Customer Support Many users appreciate the responsive support team and comprehensive documentation that make onboarding smooth.

Cons

• High Pricing Tiers Users frequently mention that the jump between pricing plans (e.g., Starter to Pro) is significant. This can be a barrier for smaller businesses or those testing the platform.
• Occasional Performance Issues Some reviewers report lagging or freezing during complex edits or while typing prompts. These disruptions can hinder productivity during critical tasks.
• Limited Advanced Customization Options Power users feel that more advanced features could enhance flexibility further for complex use cases.
• Analytics Could Be Improved Enhanced reporting capabilities are needed to better optimize bot performance according to some feedback from experienced users.
• Testing Restrictions on Voice Agents Testing voice agents requires adding a phone number instead of allowing browser-based testing—a limitation compared to some competitors offering free browser tests.

Pricing - Synthflow vs Smith AI

Note: The pricing information below is accurate at the time of writing and may be subject to change. For the most up-to-date pricing, please visit each company's pricing page.

Synthflow pricing

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Smith AI pricing

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Ringly.io pricing

Ringly.io delivers the perfect balance of affordability and features. Unlike competitors who force you into expensive tiers, Ringly.io includes all core features even in its free plan. The simple, transparent pricing scales based on your actual usage, with no surprise fees.

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Online customer reviews: Synthflow vs Smith AI

Synthflow

Synthflow is a platform for creating AI-powered voice assistants, designed to streamline customer interactions and automate phone calls. It has received 4.5 stars from 120 reviews on G2, indicating strong user satisfaction.

What users are saying about Synthflow:

"Super easy to use" - Shawn Bure, Founder at Workrr Incorporated
Synthflow is incredibly intuitive and requires no coding knowledge. The HubSpot integration is a game-changer for businesses looking to optimize workflows...

"Price jump too steep" - Anonymous Reviewer on G2
The pricing structure could be more flexible. The leap from the starter plan to the pro plan feels excessive, making it hard for smaller businesses to scale effectively...

Smith.ai

Smith.ai offers virtual receptionist services that combine AI with human support for call handling, lead qualification, and client management. It has earned 4.8 stars from 72 reviews on G2, reflecting high user approval.

What users are saying about Smith.ai:

"Professional and efficient service" - Kristi M., Law Firm Owner (G2)
Smith.ai ensures no missed leads or important calls by providing prompt transfers during urgent situations. Their detailed call summaries save time and improve professionalism...

"Limited flexibility in plans" - Anonymous Reviewer on G2
While effective overall, the pricing model can feel restrictive due to limited call allowances in lower-tier plans...

What users are saying about Ringly.io:

Ringly.io is known for its simplicity, and a focus on e-commerce, with features like abandoned cart recovery and order status lookups. It has a 4.8 star rating from 12 reviews on Product Hunt and other platforms.

"it stands out significantly ahead" - Bertrand, Director. We are at the initial stage of testing and have made only a few calls so far. Consequently, I have rated the product with four stars for now. However, I must express that the product has shown significant promise. When compared to competitors, it stands out significantly ahead.

"This is such a great product" - Jim Miranda, Founder. This is such a great product. I have been with you for less than a week and already closed 3 deals with it."

"It really sounds like a human" - Laix, Founder. Tried Ringly.io today and the quality of the phone calls surprises me! It really sounds like a human, and it reacts really fast. Will need to deploy it in action to see the full capabilities.

"How to automate customer service? -> Ringly.io" - Sidra Husnain, Founder.

Synthflow vs Smith AI: Which is best for you?

Who Synthflow is best for…

• Small to medium-sized businesses that want to automate phone calls without hiring a tech team. Its no-code setup makes it easy for anyone to get started.
• Companies with international customers needing multilingual support—Synthflow works in over 90 languages.
• Businesses looking for basic AI voice automation like appointment scheduling or customer FAQs—but who don’t need advanced sales tools.
• Organizations that already use popular CRMs like HubSpot or Zoho and want smooth data syncing for customer info.

Who Smith AI is best for…

• Busy professionals—like lawyers or consultants—who want a live receptionist available 24/7 to answer calls and schedule appointments.
• Sales-driven teams that need strong lead screening and outbound call campaigns to focus on high-value prospects only.
• Businesses with high call volume that also deal with spam—a major win with Smith AI’s automatic spam blocking.
• Companies looking for detailed call insights—Smith AI gives summaries and transcripts that help improve customer support quickly.

Who Ringly.io is best for…

• Online stores of all sizes—especially e-commerce brands that want to boost sales with abandoned cart recovery and product recommendations over the phone.
• Startups and growing businesses looking for a cost-effective solution with full features—even on the free plan.
• Teams with limited time or tech skills—Ringly.io offers simple setup, and the "Done With You" option means you don’t go it alone.
• Companies needing real-time info from their own content or tools—Ringly.io connects to knowledge bases, handles smart orders, and even checks delivery status automatically.

Bottom line? While Synthflow is great for basic voice automation and Smith AI shines when you need that human touch, Ringly.io gives you the best of both worlds—advanced automation that sounds human, drives sales, and works out of the box without breaking the bank. Whether you're just starting out or scaling fast, Ringly.io grows with you.

Why Ringly.io is a Better Choice

Highly Rated: 4.8/5

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Founded in 2024 in Rotterdam, the Netherlands, by Maurizio Isendoorn and Ruben Boonzaaijer, Ringly.io is revolutionizing e-commerce customer service with AI phone agents.Designed for online businesses, Ringly handles customer calls on autopilot—solving support issues, recovering abandoned carts, and even boosting sales—at just 20% of the cost of human agents.‍

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With 1,300+ customers, Ringly.io is the go-to solution for e-commerce stores looking to scale without scaling their support team. With award-winning technology (BubbleCon 2024's "Most Innovative App"), Ringly.io transforms your phone system into a revenue-driving powerhouse—without the headaches of traditional call centers.‍

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Features that make Ringly.io the #1 alternative to Synthflow and Smith AI:

No-code setup, instant results – Ringly.io is ready to go in minutes. Just add your website, docs, or text—no engineering required—and your AI phone agent instantly understands your business. It even updates automatically as your website changes.‍‍‍

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AI-powered sales & support – Ringly.io does both inbound and outbound calls. Recover 35%+ of abandoned carts with automated follow-up calls, provide real-time order tracking from Shopify, and convert more customers with personalized AI-driven conversations—not just reactive support.‍‍

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Advanced analytics for smarter decisions – Ringly.io gives you real-time call data, customer intent tracking, and performance reports—helping you optimize support and sales strategies.‍‍‍

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Scalable pricing without enterprise contracts – Ringly.io offers transparent, scalable pricing—pay for what you use, no locked-in contracts.‍

Final Thoughts: What’s Right for You?

Finding the right AI voice solution for your business depends on what you're trying to achieve—and how much time and budget you have to get there. If you're looking to automate basic tasks, get 24/7 receptionist coverage, or power up your e-commerce sales funnel, each platform has its strengths. But not all tools are created equal.

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Here’s a quick recap to make your decision easier:

• Synthflow is a solid option if you're a small-to-mid-sized business that wants to automate phone support without writing any code. It's great for appointment scheduling and multilingual communication—but may feel limited for businesses focused on driving revenue or optimizing e-commerce workflows.
• Smith AI stands out with its hybrid live + AI receptionists. It's ideal for service-based pros—think law firms and consultants—who need a human touch with lead vetting and 24/7 call handling. It’s powerful, but the pricing may not scale well for teams managing hundreds of calls or seeking deep automation.
• Ringly.io delivers the best of both worlds—automation that truly converts. It’s already being called a "game-changer" for online businesses, especially e-commerce brands aiming to reduce support load while increasing sales. With a simple setup, all core features included (even in the free plan), and no contracts or hidden fees, it just works out of the box.

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If you’re looking for:

• Support and sales automation that actually drives revenue
• Real-time conversations pulled from your content, shop, or CRM
• Flexible pricing with no surprise costs

Then Ringly.io is the clear pick—for startups, scale-ups, and modern teams that want more from their phone agents. It’s fast, smart, and simple—the way AI should be.

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Try it free. See the difference.

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Want to see other players in the market? Check out our alternatives:

• Smith.ai alternatives
• Synthflow alternatives