3D Illustration of a phone with voice and text message and a notification

Connect your AI agent to telephony.

Seamly is the European telephony infrastructure for AI agents. Add voice to your platform with API – keep the LLMs, content and workflows you already have in place.

Your customers are asking for voice. Use our APIs to get it done fast, secure and at scale.

Adding a voice channel sounds like a feature. But once you look under the hood, you find yourself in a world of SIP trunks, STT/TTS integration, local numbers and call routing. Suddenly, you realise it’s a substantial engineering project—one that requires expertise your team didn’t sign up to build and maintain, leaving them with less time to focus on your core product.

Line art of a clock with a cog in front of it.

Reduce building time

Seamly’s APIs bring best-in-class voice technology to your product, so your team spends less time building and more time on your core product.

Clear pricing. No surprises.

Other voice solutions often come with complex charges that are hard to understand and predict. Seamly keeps pricing simple, affordable and transparent, so you know what you’ll pay.

Line art of a server stack with a POI pin in front of it

European-based. Hosted in the EU.

Seamly is an EU-based provider, with voice infrastructure hosted in the EU. That gives you a clear answer on where your solution is operated and hosted from day one.

How does it work?

Implement our API to put your AI on the phone.

01. Sign up for our platform

Create your Seamly account and get access to the tools you need to bring your conversational AI to the phone.
02. Implement our API

Connect your bot to Seamly’s voice infrastructure and add phone conversations to your product. We handle SIP, STT, TTS, routing, local numbers in 110+ countries and the needed call insights through our dashboard.
03. Listen to your bot on the phone

Connect a phone number, call your bot and experience your conversational AI over the phone. Congratulations, you are now building voice agents.
04. Scale with confidence

Roll out voice into production with transparent pricing and EU-hosted infrastructure.

Transparant and predictable pricing

With Seamly, every call comes with everything included, whether you operate on text-to-voice or voice-to-voice. STT, TTS, recordings, transcripts and insights. No separate component pricing, no line-item surprises at the end of the month. Deploy a voice offering your customers love, with a predictable pricing model.

	Seamly	Other CPaaS solutions*
Pricing model	Price per call or per minute	Price per minute
STT	Included	Additional cost
TTS	Included	Additional cost
Call recording	Included	Additional cost
Transcripts	Included	Additional cost
Advanced insights	Included	Additional cost
Hosted in Europe	Fully EU hosted	Additional cost

* Solutions like Twilio, Livekit, Telnyx or Vonage

Seamly works, at scale. We can prove it.

Seamly already runs in industries like energy, insurance, logistics, finance, retail and leisure – handling millions of calls for enterprise customers across Europe.

Better preparation reduces

60sec

call handling time when transferring to an agent

Smarter routing reduces errors by

80%

ensuring customers are connected to the right employee straight away

Automatic handling of up to

40%

of calls significantly reduces pressure on agents

Six reasons to choose Seamly

Line art of a UI with a customer service headset

Bring your own AI agent

Keep control of your AI, conversation logic, integrations and customer experience. Use Seamly’s APIs to connect your agent to phone calls.

A line art drawing of two speechbubbles, one having text and one a waveform

Add voice to your product without adding a telephony team

Integrate voice through our self-service APIs. Your developers stay in control, without having to build telephony infrastructure from scratch.

Line art of a box with arrows and lines coming from it

Build once, run everywhere

Integrate with Seamly once to access a wide range of TTS and STT providers. Then scale your voice offering across multiple customers without building a separate integration for each one.

Line art of a hand with two coins floating above it

Pricing you can actually pitch

Clear, predictable pricing helps you forecast costs, set your margins and explain your voice offering to customers.

Line art of a block of code with a component set in front of it

The right engine for the right context

Choose from many build-in STT and TTS providers that fit each use case. Seamly’s engine-agnostic APIs give you that flexibility.

European by design

Seamly is EU-based, with voice infrastructure hosted in the EU. You get a clear answer on data residency, backed by an enterprise-grade SLA.

Connect your AI agent to telephony.

Your customers are asking for voice. Use our APIs to get it done fast, secure and at scale.

Reduce building time

Clear pricing. No surprises.

European-based. Hosted in the EU.

Implement our API to put your AI on the phone.

01. Sign up for our platform

02. Implement our API

03. Listen to your bot on the phone

04. Scale with confidence

Transparant and predictable pricing

Seamly works, at scale. We can prove it.

Six reasons to choose Seamly

Bring your own AI agent

Add voice to your product without adding a telephony team

Build once, run everywhere

Pricing you can actually pitch

The right engine for the right context

European by design

EU Hosted

GDPR Compliant

Meets ISO 27001

EU Built

EU AI Act Compliant

Curious how your platform sounds on the phone?