Synthflow vs Poly AI: Who wins for Shopify in 2026?

See how Synthflow and Poly AI compare to each other (and to Ringly.io) to help you decide what is the best platform for your Shopify brand.

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Ruben Boonzaaijer, Co-founder

Last updated on

Quick summary

Stuck choosing between Synthflow and Poly AI for your voice AI needs?

By the end of this article, you’ll know exactly which one is right for you.

We’re going to break down:

Key features, pros, and cons of Synthflow and Poly AI
Pricing comparisons and what you really get for your money
User reviews and testimonials, what real users are saying
Which is best for Shopify

Why Ringly is the better choice ; )

Built for Shopify stores

With experience in both AI and e-commerce, we set out to become the best AI phone agent platform for online stores.

Stupid-simple user interface

Super easy to work with, and you can set it up without being tech savvy. If you create a free account you can see it for yourself though!

Quick and easy setup

Seth comes pre-trained on your store and is live in under 1 hour.

Synthflow vs Poly AI: TL;DR

Product Area	Synthflow	Poly AI	Ringly.io
Ease of Use	No-code, drag-and-drop setup	More technical, enterprise focused	Fast setup, no coding needed
Voice Quality	Natural, basic conversation flows	Highly human-like and expressive	Ultra-realistic, sounds like human
Multilingual Support	90+ languages supported	45+ languages supported	Localized support + call tailoring
CRM & Integration	Basic CRM, Zapier support	Deep enterprise integrations	Shopify, help desks, any API via Coach
E-commerce Features	None specific to e-commerce	None tailored for sales tracking	Order updates, returns, product questions
Pricing Flexibility	Tiered, can get expensive fast	Unclear, mostly custom enterprise	Pay per call, all features included
User Reviews	4.5 stars, G2 verified	No user reviews available	4.8 stars, loved by founders

Synthflow - a quick overview

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Founded in Berlin, Germany in 2023 by Albert Astabatsyan, Hakob Astabatsyan, and Sassun Mirzakhan-Saky, Synthflow is crushing the AI voice call game. With over 1,000 users and counting, they're helping businesses stop missing calls and start making more money with their no-code AI phone system.

In the next section, we'll break down what makes Synthflow tick, the good stuff, the not-so-good stuff, how much it'll cost you, and what real users are saying, all compared to Poly AI and Ringly.io.

Features:

True Conversational AI
Ready-Made Template
Built-In Workflow
200+ Integration
Multilingual Support
24/7 Availability
Voice Cloning Option
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Pros and Cons

Pros:

Super Easy for Non-Techies
Strong Integrations
Natural-Sounding Voice
Guided Setup
Flexible Starting Price

Cons:

Pricing Structure Issues
Inconsistent Performance
Interface Bugs
Limited Support
Testing Limitations

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AI phone support for Shopify

Ringly.io resolves more than half of your support calls with AI

The AI phone agent picks up every call, looks up orders, handles returns, answers product questions, and escalates only the tricky ones.

Try for free → Generate demo calls →

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Poly AI - a quick overview

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Their technology delivers natural, conversational voice assistants that understand intent with industry-leading accuracy, enabling businesses to automate complex calls while maintaining a human-like interaction.

With over 200 employees and a strong presence across London, New York, San Francisco, and Belgrade, PolyAI serves enterprise clients globally.

In the following section, we will explore PolyAI’s features, pros and cons, pricing models, and user reviews compared with Synthflow and Ringly.io to help you determine the best fit for your business needs.

Features

Advanced Natural Language Processing (NLP)
Hybrid AI-Human Handover
Multilingual Support & Voice Biometrics
Omnichannel Voice Integration
Continuous Learning & Deep Learning Models
Real-Time Analytics & Insights
DTMF Input Handling & Data Collection

Pros and Cons

Exceptionally lifelike voice quality
Effective call automation & time savings
User-friendly interface & easy integration
Strong customer support & collaborative team
Rich data insights & analytics output
Mature natural language understanding (NLU)
Tangible ROI improvements for high-volume teams

Cons

Lacks advanced self-service tools for developers/teams
Barebones voice analytics features out-of-the-box
Sporadic struggles with highly complex scenarios
No fixed pricing tiers; unpredictable costs
Slight latency issues in fast-paced exchanges
User interface not as modern as competitors’ offerings
Public acceptance hurdles remain
Not ideal for startups / small teams needing rapid iteration

Pricing - Synthflow vs Poly 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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Plan	Price (Monthly)	Key Features	Contract Length	Cancellation Fees	Refund Policies
Starter	$29	Basic features for small-scale use, including CRM integration and transcription.	Monthly or annual; discounts for annual plans[1].	No penalties mentioned[2].	Refunds only for quality issues[3].
Pro	$375	Includes advanced features like SMS capabilities, suitable for medium-sized teams.	Monthly or annual; discounts for annual plans[1].	No penalties mentioned[2].	Refunds only for quality issues[3].
Growth	$750	Adds scalability options with higher usage limits and additional integrations.	Monthly or annual; discounts for annual plans[1].	No penalties mentioned[2].	Refunds only for quality issues[3].
Agency	$1,250	Designed for agencies managing multiple clients; includes all essential features at fixed rates.	Monthly or annual; discounts for annual plans[1].	No penalties mentioned[2].	Refunds only for quality issues[3].

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Poly AI pricing

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Plan	Features	Pricing	Contract Length	Cancellation Fees	Refund Policies
Custom Pricing Plan	- Advanced conversational AI for customer service - Per-minute usage billing - 24/7 support and maintenance included - Proactive performance improvements - Tailored solutions for scalability and operational efficiency	Quotation-based; per-minute usage	Long-term contracts required; annual adjustments may apply (e.g., inflation)	Yes, penalties may apply if canceled mid-term	Refunds available within 30 days under specific conditions

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Ringly.io pricing

Ringly.io has simple pay per call pricing with no hidden fees or long-term commitments. You can try it for free, and it comes with a 30-day money back guarantee. You can scale up or down on month-to-month terms, or book a demo for fully tailored enterprise support.

Plans	Price	Included	Contract	Cancellation
Pay per call	$99/mo	✓ First 50 included, then $1.99 per call ✓ Spam, hang-ups and wrong numbers are free	Monthly	Anytime	Try for free →
Custom	Talk to us	✓ 1,000+ calls a month	Custom	Custom	Book a demo →

See pricing →

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Online customer reviews: Synthflow vs Poly AI

Synthflow

Synthflow is a leading AI voice platform designed to automate customer interactions with human-like conversations. It has received positive feedback for its user-friendly interface, robust features, and ability to streamline workflows. Synthflow boasts 4.5 stars from 120 reviews on G2, reflecting strong user satisfaction.

What users are saying about Synthflow:

"Super intuitive and reliable" - Mark Witte, Owner/Founder of The Witte Team Brokered
After trying several AI voice platforms, Synthflow stood out for its intuitive design and reliability...

"Needs better flow designer options" - Anonymous User on G2
The flow designer isn't ready yet; importing flows from competitors would be a game-changer...

PolyAI

PolyAI is an advanced voice AI platform that transforms call centers into efficient operations with natural conversations across multiple languages. However, there are currently no online reviews available for PolyAI on platforms like G2, Capterra, Product Hunt, or Trustpilot, which makes it difficult to gauge user sentiment. Users should proceed cautiously when considering this product due to the lack of publicly available feedback.

What users are saying about PolyAI:

No reviews available at this time. Users should be careful when evaluating this product's suitability for their needs.

What users are saying about Ringly.io:

Ringly.io is known for its simplicity, and a focus on e-commerce, with features like order status lookups, returns and product questions. 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 Poly AI: Which is best for you?

Who Synthflow is best for…

Small to mid-sized businesses who want to save time by automating calls, scheduling, and lead follow-ups, without needing to know how to code.
Businesses needing multilingual support with over 90 languages available for global customer outreach.

Who Poly AI is best for…

Large enterprises or call centers that need lifelike voice interactions and can afford a higher-budget custom setup.
Industries like banking or hospitals that require complex call routing, advanced speech recognition, and deep CRM integrations.

Who Ringly.io is best for…

Best for Shopify brands that need phone support.

Why Ringly.io is a Better Choice

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‍Best for Shopify stores looking for the best way to offer 24/7 AI phone support at a fraction of the cost.

How it went when I tried setting up Ringly:

After I installed the Shopify app, the only thing I had to do was to upload my data to the knowledge base. (website was uploaded automatically)

After I did that, I could already speak to my agent via a web call.

Setting it live was as simple as picking a phone number with my area code from the dashboard. I was able to connect the number with 1 click. (The number is also free and included)

There was not really anything else to the setup.

They claim that Seth, their AI phone agent, resolves up to 90% of support calls. They back that up with 200,000+ calls handled.

Signup -> onboarded took under 1 hour. Most of that time was spent waiting for the knowledge to be uploaded.

Over the first 2 weeks I used it, it resolved 76% of my calls on its own.

The rest of the calls were escalated to a support ticket by my agent.

(update: the more calls you get, the smarter it gets. As of today, my resolution rate is 79%.)

Standout Features (pros):

Very easy setup (almost none)
65% resolution guarantee

Pricing is $99/mo for the first 50 calls, then $1.99 per call. If Seth resolves under 65% of calls in a month, that month comes back as credit (after 90 days on Pay per call).

Shopify integration is native. It will allow your agent to solve order status and refund requests on the phone.

Reviews are overall very positive, mainly because of the 65% resolution guarantee.

Cons:

Phone support only

What’s unique about Ringly is that it is the first AI phone support tool built for Shopify.

Conclusion: Which Voice AI Platform Should You Choose?

Synthflow is a solid option for small to medium-sized teams that want a no-code solution to automate voice calls quickly.
Poly AI shines in complex, high-volume environments like healthcare or banking, with advanced speech recognition and lifelike voice interactions.
Ringly.io is best for Shopify.

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Want to compare other players in the market? Check out our other comparisons:

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