Data as of 02/2025

Retell VS Synthflow

Choosing between a low code and no code AI call platform?

Here’s our comprehensive guide to help you choose the right AI voice agent solution for your business’s needs. Get into the details to compare pricing, features, and performance.

Powered by G2

Features

Why are businesses switching to Retell

More Capable
Synthflow’s no-code approach limits AI phone agents, lacking key enterprise features like warm call transfers, batch calling, and simulation testing. Retell AI removes these bottlenecks, ensuring stronger performance and a better customer experience.

Smarter Agents
Synthflow agents support only six languages and can’t retain context or transfer calls. Retell AI agents communicate in 19+ languages, retain context, and provide post-call analysis, optimizing performance with cutting-edge technology.

More Customizable
Synthflow bundles all agent functions into one package, limiting flexibility. Retell AI offers full customization, including custom LLMs, databases, and voice, with a low-code approach that provides developer-level control without the complexity.

All Businesses: Small or Large
Synthflow’s tiered pricing favors high-volume enterprise users, limiting cost-effective options. Retell AI’s modular pricing ensures businesses of all sizes get tailored solutions, with a free version and volume-based enterprise discounts.4o

Retell
Drag & Drop
Low-no code capabilities
No code capabilities
Preset Functions
Supported
Supported
LLM Model & Intelligence
Supported
Supported but limited customizability 
Custom LLM
Supported
Not Supported
Custom Telephony
Supported
Supported
Warm Transfer
Supported
Not Supported
Multilingual
Supported
Supported
Branded Call
Supported
Not Supported
Post Call Analysis
Supported
Not Supported
Simulation Testing
Supported
Not Supported
Batch Calling
Supported
Not Supported
Latency
Sub-second
Sub-second
Features

The Pricing Comparison

Retell AI offers a more flexible and cost effective pricing model, allowing businesses to pay only for the features they need. Unlike Synthflow, which bundles all agent functions under fixed pricing tiers with additional usage costs, Retell AI provides modular pricing and advanced AI capabilities, making it the better choice for businesses seeking scalability and customization.

Retell
Base Price
$0.07/min
$0.18-$0.22/minute + $0.13/min after monthly minute limit
Phone Number
$2.00/month
Included
Speech to Text
Included
Included
Adds-on
Branded Calls
Verified Phone Number
Unsupported
Enterprise-Grade

Security, Scalability & Reliability

Both platforms offer industry-standard security, but Synthflow lacks transparency on uptime, raising reliability concerns. Retell AI ensures 99.99% uptime for uninterrupted operations. With no rate limits, Retell scales effortlessly, while Synthflow restricts scaling based on pricing tiers.

Retell
Compliance
HIPAA, SOC2Type 1&2, GDPR
HIPAA, SOC2 Type 1&2, GDPR
Rate limit
Not Limit
10 - 100+
depending on plan
Uptime to date
99.99%
Unknown
How Retell AI Outperforms the Competition
Testmonials

Trusted by 3,000+ Businesses

See Customers

Explore real success stories from businesses that have automated their call operations with Retell AI.

“We were able to contain 65% of voice calls with the bot, which previously would have been directly gone to a manual agent for resolution.”

Saurabh Sodhani, SVP of Digital Transformation, Everise

600+

man hours saved per month

65%

Enterprise Solutions

Everise - Retell case study
“Retell AI is loaded with features that can fulfill our case and it's pretty easy to integrate.”

Neeraj Sharma, Head of Engineering at AccioJob

70%

Reduction in false-positive assessments

2<

Days spent integrating Retell AI

Acciojob - Retell AI Case study

Supercharge Your Call Center with  Retell

See how Retell AI can transform your call center with AI voice agents in minutes