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

Connect your AI agent to telephony. Enterprise-ready in two weeks.

Seamly is the European voice infrastructure layer for conversational AI platforms and system integrators. Add voice to your platform without building telephony – using the LLMs, agents and workflows you already have in place.

Your customers are asking for voice. But building it yourself gets complicated fast.

Adding a voice channel sounds like a feature. But the moment you look under the hood, you find yourself in a world of SIP trunks, STT/TTS integration, local numbers and call routing. And then it stops feeling like a feature and starts feeling like an engineering project. One that requires expertise your team didn't sign up to build.

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

It's more work than it looks

CPaaS solutions are built for telecom developers, not for conversational AI platforms. Each part of voice requires custom work that pulls your team away from your core product.

The invoice is always a surprise

Per-minute billing. Separate charges for STT, TTS, recording, transcripts and insights. The more your customers use voice, the harder it gets to predict what it costs. Margins become a guessing game.

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

"Where is our data hosted?" is not a fun question

European enterprise customers ask about data residency early and often. US-based telephony infrastructure makes that conversation longer than it needs to be.

There's a smarter way to add voice to your platform

You bring the AI. We bring the phone.

01. Connect your platform or LLM

If your platform has an API, Seamly connects to it. We work with all conversational AI platforms, custom LLMs and existing agent logic. We've yet to meet an API we couldn't shake hands with.
02. Seamly becomes your managed voice layer

We handle the full telephony infrastructure – SIP, STT, TTS, call routing, local numbers in 110+ languages, transcripts and advanced call insights. All included, and fully managed.
03. Ship voice in two weeks

Your platform gains a fully working voice channel in two weeks. You ship the feature; we run the infrastructure behind it.
04. Scale without the spreadsheet anxiety

One fixed price per call. Whether your customers run 5.000 or 500.000 calls a month, the unit economics stay the same. No per-minute surprises, no add-on fees for the features that matter. You can actually tell your CFO the benefits of voice.

One price per call. That's really it.

With Seamly, every call comes with everything included – STT, TTS, recording, transcripts and insights. No 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	Fixed price per call	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, Audiocodes 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. We've had the hard conversations so you don't have to.

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 platforms choose Seamly over building it themselves.

Line art of a UI with a customer service headset

Bring your own AI agent

Your platform keeps its intelligence. Seamly is the voice infrastructure layer — you control the AI, the conversation logic and the product experience.

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

Add voice to your product, without additional headcount

No telephony specialists needed. No new team. Seamly handles telephony so your engineers can keep working on the product you're actually building.

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

Build once, run everywhere

Your conversation logic works across chat and voice without duplication. One offering, two channels. Zero maintenance overhead for the second one.

Line art of a hand with two coins floating above it

Pricing you can actually pitch

Fixed per-call pricing means you can design a voice offering with margins you can actually forecast, and pitch it to a customer without a disclaimer.

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

The right engine for the right context

Seamly is engine-agnostic, enabling the best STT and TTS provider to be selected for each use case. This ensures your customers can deliver a voice experience that sounds natural and accurate, regardless of language, accent, or domain.

European by design

Full EU data hosting, enterprise-grade SLA, and a straight answer to "where is our data?" — every single time.

Connect your AI agent to telephony. Enterprise-ready in two weeks.

Your customers are asking for voice. But building it yourself gets complicated fast.

It's more work than it looks

The invoice is always a surprise

"Where is our data hosted?" is not a fun question

You bring the AI. We bring the phone.

01. Connect your platform or LLM

02. Seamly becomes your managed voice layer

03. Ship voice in two weeks

04. Scale without the spreadsheet anxiety

One price per call. That's really it.

Seamly works, at scale. We can prove it.

Six reasons platforms choose Seamly over building it themselves.

Bring your own AI agent

Add voice to your product, without additional headcount

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?