The AI Voice Infrastructure

The AI Voice Infrastructure

The AI Voice Infrastructure

That Replaces Call Teams.

That Replaces Call Teams.

That Replaces Call Teams.

Answer every inbound call. Launch unlimited outbound follow-ups at once. fill out the form below and experience it for yourself.

Answer every inbound call. Launch unlimited outbound follow-ups at once. Fill out the form below and experience it for yourself.

Synthesys is trusted by leaders at the world's top organizations:

Synthesys is

The 24/7 AI Phone System For Any Business, At Infinite Scale

The 24/7 AI Phone System For Any Business, At Infinite Scale

Automate 100% of your inbound and outbound. Handle sales and support. Generate revenue 24/7.

Automate 100% of your inbound and outbound. Handle sales and support. Generate revenue 24/7.

Our Product Suite

Get to know Synthesys

Get to know Synthesys

Synthesys gives your startup everything you need to run sales and support at scale. 24/7 multilingual calling, smart routing, instant follow-ups, and deep integration with your existing tools—all in one place.

For everyone from

startups to enterprise

For everyone from

startups to enterprise

Hundreds of companies of every size have collectively automated millions of calls with Synthesys.

Sell and support in any language

Close deals, answer customers, and scale without hiring. Break into new markets instantly with AI fluent in 20+ languages.

Run on autopilot

Let Synthesys replace phone reps across sales and support. Free your team to focus on strategy while Synthesys handles the repetitive conversations.

Never miss a call

Capture every opportunity, day or night. Every lead gets answered in seconds. No more voicemails, and no more customers pressing 5.

Capture every opportunity

Sales and support,

whenever, wherever.

Handle calls, sales, and support on autopilot. Close deals, capture leads, and assist customers in any language — all powered by Synthesys.

AI-powered inbound & outbound

Answer every call instantly. Book appointments, qualify leads, and close sales without hiring extra reps.

Run across every channel

Phone, CRM, SMS. Synthesys integrates with the tools you already use to unify your communications.

Never miss revenue

Day or night, every customer gets answered. Synthesys works 24/7 to capture revenue and deliver support automatically.

Global, limitless growth

True outbound without limits

Real outbound at massive scale

Launch thousands of personalized prospecting calls every day. Reach more decision-makers, create more opportunities, and close more deals, without adding a single extra person.

Support and sell worldwide

Run sales and support calls in any language, 24/7. Expand into new markets overnight with AI that scales as fast as your ambitions.

Expand without barriers

Grow your business globally.

English

French

German

Mandarin Chinese

Hindi

Spanish

Arabic

Russian

Urdu

Swedish

Turkish

Greek

Korean

Polish

Norwegian

From startups to enterprises, Synthesys scales globally so you can sell, support, and grow without limits. Enter new regions overnight and run AI-powered sales and support calls in 50+ languages, across every time zone almost instantly.

Desktop and mobile

Run every call, from anywhere

Manage every conversation in one place

Track inbound, outbound, sales, and support calls with a single dashboard. Monitor performance, view transcripts, and stay in control — all in real time.

Stay connected on the go

Get instant alerts when leads are qualified, meetings are booked, or revenue is closed. Manage everything from your pocket with the Synthesys mobile view.

There’s no better way to grow

The world’s best-performing AI voice & telecommunications platform

HIGHER CONVERSIONS

30%

HIGH INTENT CONVERSATIONS

1M+

Synthesys turns every missed call into revenue. With AI answering, qualifying, and closing 24/7, your phone becomes the most profitable channel in your stack.

*based on research data from Synthesys Research Labs in August 2025.

Crystal clear. Always on. Everywhere.

Synthesys connects calls in under 200ms, delivering natural, human-quality voice across every continent. With enterprise-grade reliability and the scale to handle millions of conversations, you’ll never miss a customer, no matter where they are.

Synthesys keeps you

ahead of the curve

Our world class team never stops pushing the boundaries of what’s possible, so your business is always one step ahead.

AI built for revenue

Synthesys doesn’t just answer calls — it learns, adapts, and improves. From smarter sales conversations to faster support handling, you’re always backed by the most advanced telecom AI on the planet.

Nonstop innovation

Every quarter, we launch new features, integrations, and performance upgrades — all designed to help you sell more, support better, and scale faster without adding headcount.

“Synthesys has given us the ability to expand into markets we never thought possible.”

Elena von Markovic – COO, Brightside

“Synthesys has given us the ability to expand into markets we never thought possible.”

Elena von Markovic – COO, Brightside

“Synthesys has given us the ability to expand into markets we never thought possible.”

Elena von Markovic – COO, Brightside

Synthesys has your back

Whether you’re ramping up outbound, scaling into new regions, or handling surging call volume, Synthesys is built to support your growth at every stage.

$200M+ in pipeline creation

Trusted by high-growth teams across industries.

Calls scaling into the millions

From startups to enterprises, Synthesys immediately adapts to your volume.

0 downtime. Ever.

Enterprise-grade reliability with 99.99% uptime.

Integrations for everything

Synthesys comes ready to run out of the box. But if your business needs more, our ecosystem of CRM, sales, and support integrations connects you to the tools you already use - with over 200+ apps for whatever specialized features you might need.

Built for business, not for developers

No APIs. No code. No IT team required. Synthesys is plug-and-play and designed to work out of the box so your team can scale instantly.

4

3

2

1

Onboarding

Our team handles the entire setup process for you, ensuring your account is live, configured, and ready without lifting a finger.

4

3

1

2

Integration

We manage all technical connections behind the scenes, seamlessly integrating Synthesys so it works flawlessly from day one.

1

2

4

3

Validation

We test and refine Synthesys in a controlled environment to ensure quality, accuracy, and performance.

1

2

3

4

Optimization

Continuously improve through monitoring, analysis, and strategic enhancements to drive sustained growth.

4

3

2

1

Onboarding

Our team handles the entire setup process for you, ensuring your account is live, configured, and ready without lifting a finger.

4

3

1

2

Integration

We manage all technical connections behind the scenes, seamlessly integrating Synthesys so it works flawlessly from day one.

1

2

4

3

Validation

We test and refine Synthesys in a controlled environment to ensure quality, accuracy, and performance.

1

2

3

4

Optimization

Continuously improve through monitoring, analysis, and strategic enhancements to drive sustained growth.

4

3

2

1

Onboarding

Our team handles the entire setup process for you, ensuring your account is live, configured, and ready without lifting a finger.

4

3

1

2

Integration

We manage all technical connections behind the scenes, seamlessly integrating Synthesys so it works flawlessly from day one.

1

2

4

3

Validation

We test and refine Synthesys in a controlled environment to ensure quality, accuracy, and performance.

1

2

3

4

Optimization

Continuously improve through monitoring, analysis, and strategic enhancements to drive sustained growth.

Numbers Driving Limitless Growth

Scaling businesses, one conversation at a time.

1M+

CONVERSATIONS/MONTH

AI-powered inbound and outbound calls delivered across industries worldwide.

1M+

CONVERSATIONS/MONTH

AI-powered inbound and outbound calls delivered across industries worldwide.

30%

HIGHER CONVERSIONS

Average increase in closed deals compared to traditional phone reps.

50+

LANGUAGES

Conversations localized instantly, across every major global market.

50+

LANGUAGES

Conversations localized instantly, across every major global market.

99.99%

UPTIME

Enterprise-grade uptime so every customer, in every time zone, gets answered.

Done for you deployment in days, not months

Our team launches your Synthesys System in under 14 days. Designed for speed and scale.

Human-like voice with sub-tenth-second latency

Deliver natural, multilingual conversations with <200ms response time and enterprise-grade reliability.

Specialists behind every deployment

Our team of fulfillment engineers, solution architects, and AI telecom experts ensure your system is optimized, resilient, and continuously improving.

Enterprise performance at transparent cost

Scale globally with predictable pricing. No add-ons, no hidden fees.

Telephony Integrations

Connect to Any Telephony System

Keep your existing carrier, PBX, or SIP trunk. Synthesys plugs right in. With full BYOC support, you can run AI-powered inbound and outbound calls on top of your current telephony infrastructure. Whether you use RingCentral, Twilio, Genesys, Avaya, or a custom SIP setup, Synthesys integrates seamlessly so you stay flexible, compliant, and in control of your costs.

Unleash the power of Synthesys and scale without limits.

Transform the way your business connects with customers. Synthesys empowers you to scale conversations, capture opportunities, and expand into new markets with ease.

Trusted by Industry Leaders

Synthesys is engineered for enterprise-grade security and advanced conversational handling capable of managing high-stakes workflows like lending qualification, debt collection, payment disputes, sensitive customer service, and regulatory compliance inquiries with clarity and control.

Security and Data Privacy

No training on your data

SAML SSO & SCIM

Dedicated workspace with custom data retention

Data encryption at rest (AES-265) and in transit (TLS 1.2+)

Administrative Controls

Fine-grained control over access and features

Insights into user adoption, engagement, and behaviour

Administrative Controls

Dedicated account team and enhanced support

Tailored onboarding & live trainings

Synthesys Vs. Others

Hear the difference yourself

Synthesys

AI-powered inbound and outbound calls with sub-100ms latency in 50+ languages.

Triple-layer prompting ensures conversations stay on-script and contextually accurate.

Contextual live routing & transfers to the right workflow or human agent instantly.

Enterprise-grade compliance (SOC 2 Pending, HIPAA, GDPR) with region-specific data residency.

Infinitely scalable with 10,000+ concurrent call capacity across industries worldwide.

Others

Awkward, robotic interactions and voices.

Single-layer prompts that lose context and drift off-script.

Rigid routing systems that fail in complex call flows.

Limited compliance coverage, with no true data residency protections.

Struggle to scale beyond pilot programs or narrow single industry use cases.

Start Using Synthesys Today

Experience the full power of Synthesys. Join countless businesses who have already transformed their phone operations.

Synthesys Research Labs

Read our Research Reports

From scaling outbound prospecting to transforming global support, our insights show you how Synthesys creates real business impact.

The 10-Second Advantage


Benchmarks from 4.8 million inbound calls prove that replies inside 10 seconds triple pipeline conversion.

CRO / VP Sales

Q3 2025

Retention Wars — AI Save-Offer Playbook

Churn-risk outreach benchmarks, channel mix tests, and copy templates that push save rates past 31%.

CX / Lifecycle Manager

EOY Report

Dial or Die — Concurrency Economics in Peak Season

How burst-dialing (1 → 500 concurrent lines) slashes contact time 74% and adds $112 per rep per day.

RevOps / Contact-Center Director

Q4 2025

Frequently Asked Questions

Frequently Asked Questions

Still have a question?

Get in touch and let's discuss it.

What exactly is Synthesys, and what does it do?

What exactly is Synthesys, and what does it do?

What exactly is Synthesys, and what does it do?

Do you offer a free trial to test Synthesys?

Do you offer a free trial to test Synthesys?

Do you offer a free trial to test Synthesys?

Does Synthesys replace human employees?

Does Synthesys replace human employees?

Does Synthesys replace human employees?

How secure and compliant is Synthesys?

How secure and compliant is Synthesys?

How secure and compliant is Synthesys?

Can I customize Synthesys for my business needs?

Can I customize Synthesys for my business needs?

Can I customize Synthesys for my business needs?

Does Synthesys integrate with our existing systems?

Does Synthesys integrate with our existing systems?

Does Synthesys integrate with our existing systems?

How quickly can we get started with Synthesys?

How quickly can we get started with Synthesys?

How quickly can we get started with Synthesys?

How do I maintain control over my brand’s voice with Synthesys?

How do I maintain control over my brand’s voice with Synthesys?

How do I maintain control over my brand’s voice with Synthesys?

What happens if Synthesys doesn’t understand something?

What happens if Synthesys doesn’t understand something?

What happens if Synthesys doesn’t understand something?

Does Synthesys identify voicemails, spam, and wrong numbers?

Does Synthesys identify voicemails, spam, and wrong numbers?

Does Synthesys identify voicemails, spam, and wrong numbers?

Do I need technical skills or developers to set up Synthesys?

Do I need technical skills or developers to set up Synthesys?

Do I need technical skills or developers to set up Synthesys?

Can I use custom or cloned AI voices with Synthesys?

Can I use custom or cloned AI voices with Synthesys?

Can I use custom or cloned AI voices with Synthesys?

How well does Synthesys scale with high call volumes?

How well does Synthesys scale with high call volumes?

How well does Synthesys scale with high call volumes?

What exactly is AI voice automation?

What exactly is AI voice automation?

What exactly is AI voice automation?

Why should I choose Synthesys over other AI voice solutions?

Why should I choose Synthesys over other AI voice solutions?

Why should I choose Synthesys over other AI voice solutions?

How does Synthesys technology work behind the scenes?

How does Synthesys technology work behind the scenes?

How does Synthesys technology work behind the scenes?

  • Every phone call is an opportunity. Scale with Synthesys.