Phonely AI

Thoughtly vs Synthflow AI

Deciding

between

Thoughtly

and

Synthflow AI

Dig into details of comparison in pricing, features and performance.

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Features

How do these two tools stack up?

Flexibility and Customization

Synthflow has stronger flexibility for custom workflows, multilingual support, and broader integration with many systems. It tends to let you adapt call flows more deeply and supports no-/low-code tools for creating complex, real-world flows (e.g. warming transfers, routing, etc.). Thoughtly is good for quick setup, with no-code drag-and-drop conversation editors, skills libraries, personality/voice traits, etc.

Telephony Capabilities

Synthflow appears to offer more advanced telephony-features: multilingual inbound/outbound call handling, robust simultaneous call handling (high concurrency), native CRM & calendar integration, with SIP trunking or custom telephony setups. Thoughtly also supports inbound & outbound calls, CRM/calendar integrations, and offers no-code flow and skills libraries, but some of the more advanced telephony bells & whistles appear more limited.

User Experience

Here Thoughtly has an edge, especially for less technical users: its interface is cleaner and easier to use according to reviews, set-up time is shorter, drag/drop editors, “voice agents in under 20 minutes” type of claims. Users seem to appreciate that Thoughtly makes getting started easy, so for teams with less dev resources, small businesses, or first trying voice automation, Thoughtly will be more pleasant. Synthflow is powerful, but some of that power comes with more complexity.

Call Quality

On call quality, Thoughtly seems to pull ahead, mostly due to its use of high-quality voice models (ElevenLabs voices, for example), good voice realism, accents/dialects, etc. There are reports that users of Synthflow also find it good, though perhaps with more variance (especially as call complexity or volume goes up, accents or unexpected inputs may degrade performance more).

Features

LLM Model & Intelligence

Supported

Limited

Custom LLM

Not Supported

Supported

Custom Telephony

Supported

Warm Transfer

Supported

Multilingual

Supported

Supported (30+ languages)

User Experience

No-code drag-and-drop builder, Skills Library

No-code builder with enterprise monitoring, controls

Preset Functions

Supported

Brand-Tailored Voice

Supported, customizable voices.

Supported, configurable voice profiles

Hight Voice & Audio Quality

Optimal

Excellent

Low Latency

Not publicly disclosed

Sub-second, under 500ms

Features

Setup, Deployment, and Scalability

Fast deployment and scalability are key for growing teams. Thoughtly’s AI voice assistants are designed for quick setup, while Synthflow AI focuses on large-scale enterprise onboarding.

Features

Deployment

No-code, deploy in about 17 minutes

No-code

Scalability

Grows with business needs

Designed for thousands of concurrent calls

Best For

Startups, SMBs, mid-market

Enterprises and agencies

Enterprise-Grade

AI Voice Quality and Human-Like Interactions

When choosing an AI voice agent solution, the quality of interactions matters. Both platforms deliver natural-sounding voices but take different approaches:

Features

Voice Style

Customizable, lifelike

Natural, enterprise-grade

Multilingual

Supported

Supported, over 30 languages

Caller Trust

Personalized, skill-driven responses

Enterprise-ready conversations

Enterprise-Grade

Integration Capabilities

Integrations determine how easily AI voice platforms fit into your workflows. Both offer strong options, but Synthflow AI supports broader seamless integration with enterprise tools.

Features

Integrations

CRM (Salesforce, Zoho), Telephony (Twilio), Calendars (Google Calendar, Calendly), OpenAI, Zapier, Bubble, etc.

CRM (Hubspot, GoHighLevel, Stripe), Telephony (Twilio, Telnyx), Calendars (Cal.com), OpenAI, ElevenLabs, Zapier, Make, Bubble, etc.

Integrations

Skills library for triggers & workflows, uses webhooks in the background

Advanced routing + webhooks

Scope

SMB-friendly workflows

Enterprise-first ecosystem

Enterprise-Grade

Compliance and Security

Managing sensitive customer data requires strict security measures. While both platforms prioritize data privacy, businesses handling regulated information should confirm official certifications before deployment.

Features

HIPAA

Compliant (will sign BAA)

Compliant

SOC II

No Information

Compliant

GDPR

No Information

Compliant

Enterprise-Grade

Performance and Reliability

Fast, consistent performance matters for delivering seamless customer experiences. Synthflow AI emphasizes sub-400ms response times, while Thoughtly focuses on optimizing workflows for growing teams.

Features

Latency

Near real-time

Sub-400ms

Accuracy

High

Multi-channel

Yes, primary focus on phone calls and workflows

More extensive, central to enterprise design

Enterprise-Grade

Pricing

The right pricing structure depends on your call volume and growth plans. Thoughtly is designed for SMBs and startups with flexible usage, while Synthflow AI caters to enterprise-level scalability.

Features

Model

Per-minute usage model, paid plan starts at $30/month (300 minutes), enterprise plan with custom pricing

Tiered monthly/yearly packages + per-minute overages, enterprise plan as low as $0.08/min

Best Fit

SMBs & startups

Enterprises & agencies

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Synthflow

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Thoughtly

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Synthflow

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Rita Gomez

Team Lead, Horizon Connect

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Can Thoughtly and Synthflow handle both inbound and outbound calls?

Yes. Both platforms support inbound and outbound phone automation, including reminders, follow-ups, customer updates, and lead qualification calls.

Can Thoughtly and Synthflow handle both inbound and outbound calls?

Yes. Both platforms support inbound and outbound phone automation, including reminders, follow-ups, customer updates, and lead qualification calls.

Can Thoughtly and Synthflow handle both inbound and outbound calls?

Yes. Both platforms support inbound and outbound phone automation, including reminders, follow-ups, customer updates, and lead qualification calls.

Which platform offers better CRM and workflow integrations?

Synthflow provides broad native integrations (e.g., HubSpot, Zapier, Make) to enable seamless integration across 200+ apps. Thoughtly connects with calendars, CRMs, and back-office systems via its Skills Library and APIs, making it easy to plug voice automations into everyday workflows.

Which platform offers better CRM and workflow integrations?

How quickly can each platform be deployed?

Thoughtly features a no-code, drag-and-drop builder that teams can launch in minutes. Synthflow AI typically completes enterprise onboarding within roughly three weeks.

How quickly can each platform be deployed?

Thoughtly features a no-code, drag-and-drop builder that teams can launch in minutes. Synthflow AI typically completes enterprise onboarding within roughly three weeks.

How quickly can each platform be deployed?

Thoughtly features a no-code, drag-and-drop builder that teams can launch in minutes. Synthflow AI typically completes enterprise onboarding within roughly three weeks.