Answer every inbound call. Launch unlimited outbound follow-up calls. Built for businesses at every level of scale.
Synthesys is trusted by:
Synthesys is
Our Product Suite
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.
4.9
4.3
I use Synthesys for lead generation and to have software that contacts my leads 24/7. Really great product, really great team.
Jon Smith
Very good does not even do it justice
Elliot Vitzthum
This company offers a great all-in-one solution within the AI voice sector and is key for any business looking to increase revenue and save time. Great customer service as well.
Mat
David and the team are amazing, onboarding was smooth and the system runs perfectly.
Klant Lucas
Works smoothly and easy to use. I run a web design agency and its a great addition to my business. The software looks great and works amazing.
Ezra Smith
Platform looks great! Very easy to use. David is a savage and I got massive value from my onboarding call.
Pol Riba
The product is fantastic. It really helps our clients improve business outcomes by capturing opportunities for them around the clock.
Angus Hackney
Synthesys is solving the most fundamental, yet important, problem in modern businesses. Leads need to be contacted, qualified, booked in, and followed up with. Synthesys allows us to operate without hiring several salespeople!
Hasham G.
I find Synthesys solves AI voice infrastructure challenges with its ease of use and creation of voice AI, supported by its simplicity and user-friendly UI/UX.
Pol R.
David has Synthesys, very good product.
Anthony Greg
Synthesys makes it easier for me to acquire and get more information from customers without my presence, simplifying my life as a business owner.
Melvin T.
Synthesys helps capture more leads, answer every call, and reduces admin burdens, saving time. It ensures clients never miss opportunities, retains a personal touch, and boosts service quality.
Angus H.
Synthesys is solving the problem of always being available to speak on the phone. I loved how much better the response times have gotten.
Parker N.
The team was amazing to work with. being able to call in different languages helped out international business. Setup was super easy and team was super helpful.
Yousef L.
Listen. I’m just pissed I didn’t have Synthesys when I started my business 5 years ago.
Lerozier H.
Synthesys has enabled our team to connect with hot leads and schedule meetings at a pace that our previous call team simply couldn't match. This has allowed our salespeople to dedicate more time to prospecting and closing deals.
Harsimran S.
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 50+ 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
Hindi
Spanish
Arabic
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.
Ready for any industry, from scheduling logistics to handling customer claims and 24/7 support. Our secure, multilingual Voice AI agents integrate directly into your enterprise systems. Synthesys delivers instant, high-quality automation for conversations that consume team time, enabling you to dramatically increase availability and lower operational costs.
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 95+ apps for whatever specialized features you might need.
Built for business
Synthesys is plug-and-play and designed to work out of the box so your team can scale instantly.
Numbers Driving Limitless Growth
Scaling businesses, one conversation at a time.
30%
HIGHER CONVERSIONS
Average increase in closed deals compared to traditional phone reps.
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 <100ms 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.
Trusted by the world’s leading enterprises
From finance to retail, global brands and enterprises choose Synthesys to scale conversations, streamline operations, and unlock thousands of hours in productivity every month.
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.
Synthesys Vs. Others
Hear the difference yourself
Synthesys
AI-powered inbound and outbound calls with sub-500ms 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.
Still have a question?
Get in touch and let's discuss it.
What exactly is Synthesys, and what does it do?
Do you offer a free trial to test Synthesys?
Does Synthesys replace human employees?
How secure and compliant is Synthesys?
Can I customize Synthesys for my business needs?
Does Synthesys integrate with our existing systems?
How quickly can we get started with Synthesys?
How do I maintain control over my brand’s voice with Synthesys?
What happens if Synthesys doesn’t understand something?
Does Synthesys identify voicemails, spam, and wrong numbers?
Do I need technical skills or developers to set up Synthesys?
Can I use custom or cloned AI voices with Synthesys?
How well does Synthesys scale with high call volumes?
What exactly is AI voice automation?
Why should I choose Synthesys over other AI voice solutions?
How does Synthesys technology work behind the scenes?