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Agents that really speak — not text read aloud

Most phone bots read text out loud: the words are right and the delivery is flat. Ours work out how a line should sound before they say it — where the emphasis goes, when to slow down, whether the moment needs warmth or an apology — and our own speech models perform it. Replies start in about a seventh of a second and stop the instant the caller cuts in.

Works with Fritz!DSL Our own speech models Keep your number
app.callagent.pro
Overview
Total calls
1,284
+12.4%
Answer rate
94.2%
+1.8%
Avg. duration
3:24
−0:11
Live now3 active
+49 30 901 4225
🩺 Reception – Dental
02:14
+44 20 7946 112
🛒 Order Support
00:48
● On call
🩺
Reception – Dental
Speaking…
“Thursday at 10 works — booked!”
📅
Lead Qualifier
Qualifies inbound leads
🇪🇸 Spanish👩 Lucía94% success
24/7
Always on
<1 s
Reply latency
10+
Languages
0
Phone menus
5 min
To go live
Prosody & emotion

The words were never the hard part

Every voice bot gets the words right. What gives them away is the delivery: flat pitch, emphasis on the wrong syllable, the same cheerful tone for a booking and for bad news, a pause that lasts a beat too long. Our agents write their own delivery — stress, pacing, emotion, a breath, a laugh — and our speech models perform it. That is the difference between speaking and playback.

Prosody that means something

Emphasis where the sense needs it, breath where a person would breathe, a question that actually rises at the end. Numbers, names and addresses said the way you would say them out loud.

Emotion that fits the moment

Warm on a greeting, apologetic on a mistake, brisk when the caller is in a hurry. The agent chooses the tone per sentence — it is not one upbeat setting applied to every call.

It thinks before it speaks

It reads your knowledge base, checks a real calendar, looks things up mid-sentence — then answers the question that was asked, not the nearest one it recognised.

How it works

Live in three simple steps

No developers, no phone-system project. Describe the job, pick a voice, point a number at it.

Describe your agent

Give it a name and explain what it should do in plain language — like briefing a new hire. Pick a voice and language.

What should it do?
You are the receptionist for Bright Smile Dental. Greet callers warmly, book or reschedule appointments…

Connect a number

Get a new local number in seconds, or bring your own over SIP. Choose which agent answers it.

🇩🇪
+49 30 901 4225
Berlin
🩺
Reception
AI agent

Go live

It answers instantly. Watch live calls, then review recordings, transcripts and AI summaries any time.

Hear it yourself

Call one — then try to trip it up

Pick a use case and start a real call from this page. Interrupt it. Change your mind halfway through. Read it a phone number too fast. That is the only test that counts.

Choose a demo agent
Real call · live in your browser, in this page’s language
Demo call00:00
🩺
Reception – Dental
Ready to call
Press call to start
Talk live to a real AI agent
The product

Everything else your phone line needs

One dashboard: the agent, how it speaks, its number, every call it took and every detail it captured.

No-code builder

Build a capable agent in plain English

Describe the job, pick a voice, and you’re done. Sensible defaults handle the hard parts — every advanced knob is there when you want it, hidden when you don’t.

  • Start from a template or a blank prompt
  • Connect a knowledge base & forward to a human
  • Test it in the browser before it goes live
Reception – Dental Live
Test this agent
Talk to it in your browser
Test call
What should this agent do?
You are the friendly receptionist for Bright Smile Dental. Greet callers warmly, book or reschedule appointments, and answer questions about hours and insurance.
Language
🇩🇪 German
Voice
👩 Klara — warm
Fine-tuning — speech timing & model settings
Calls & transcripts

Every call recorded, transcribed & summarised

Listen live or review later. Each call comes with audio, a full transcript, an AI summary and the exact details your agent captured — names, dates, order numbers.

  • Live monitoring with listen, whisper & take-over
  • Auto-tagged outcomes you can search & filter
  • Summaries emailed or sent to your tools via webhook
Call #9 · +49 151 22904881 Qualified
Hi, thanks for calling Bright Smile Dental — how can I help?
Agent · 14:32
I’d like to book a cleaning appointment please.
Caller
Of course! I have Thursday at 10:00 or Friday at 14:30. Which works?
Agent
Thursday at ten is perfect.
Caller
AI summary

Caller booked a cleaning for Thursday 10:00. Collected name and insurance type.

Intent: Book appointmentDate: Thu 10:00Insurance: Statutory
Numbers & routing

Smart routing that fits how you work

Point each number at an agent or a person. Add rules for busy lines, after-hours and weekends — calls always land in the right place.

  • Local numbers in seconds, or bring your own SIP
  • Fallback rules: busy, time of day, weekends
  • Hand off to your team whenever you need to
Phone Numbers 5 connected
🇩🇪
+49 30 901 4225
Berlin
answered by →
🩺
Reception
AI agent
🇬🇧
+44 20 7946 112
London
answered by →
🛒
Order Support
AI agent
🇩🇪
+49 89 210 9455
Munich
answered by →
Front desk
SIP extension
Voices, prosody & outbound

42 voices, every one of them ours

Not a reseller’s API with someone else’s latency and someone else’s monotone. We train and serve the speech models, so delivery is ours to tune: how emotional a voice gets, how fast it speaks, how it handles a spelled-out email or a 12-digit order number. A caller in Berlin and one in Kyiv both get someone who sounds local.

  • Per-agent delivery: emotion level, pacing, speech notes
  • 42 voices across 10+ languages, all in-house
  • API & webhooks for your own automations
Voices 42 available
Klara
🇩🇪 German · warm
Marcus
🇬🇧 English · clear
Lucía
🇪🇸 Spanish · bright
Giulia
🇮🇹 Italian · lively
Camille
🇫🇷 French · soft
Tobias
🇩🇪 German · calm
Measured, not claimed

The numbers behind the voice

Measured on our own serving stack, on the hardware that answers your calls.

0.14 s
From text to first audio
8
Simultaneous voice streams per GPU
0
External APIs on-premises
42
Voices, all in-house
What callers do

Nobody waits for the robot to finish

“Patients talk to it the way they talk to my receptionist — they interrupt, they change the date twice, and it keeps up. That is the part I did not expect.”

MK
Maria K.
Dental practice owner

“We had tried two other voice products. Callers kept going quiet, waiting for the robot to finish its sentence. With this one they just have the conversation.”

TS
Thomas S.
E-commerce, support lead

“Same agent, German and Spanish, and both sound like someone who grew up there. Our cold-lead conversion moved because people stay on the line.”

LR
Lucía R.
Sales operations
Pricing

Simple plans that scale with your calls

Start pay-as-you-go, upgrade when you grow. No setup fees, cancel anytime.

Prepay
€0/mo
Pay as you go
€0.25 / minute
Start free
  • No monthly commitment
  • All core features
  • Email support
Basic
€49/mo
300 minutes included
then €0.165 / minute
Choose Basic
  • Advanced AI features
  • Custom voice options
  • Recording & transcripts
Most popular
Pro
€99/mo
1,000 minutes included
then €0.10 / minute
Choose Pro
  • Full AI capabilities
  • API access
  • Multi-user access
Premium
€149/mo
2,000 minutes included
then €0.075 / minute
Choose Premium
  • Unlimited users
  • Dedicated account manager
  • SLA & custom integrations

All plans include unlimited agents, call recording and the full dashboard. Prices exclude VAT.

On-premises licenses

Run the entire stack on your own hardware

Prefer to keep everything in-house? License callagent as a stand-alone system installed on your premises — in your office or colocated. The LLM, speech-to-text and text-to-speech all run on your machines, and every call is handled end-to-end without a single external API request.

LLM, STT & TTS on your machines Zero external API usage In your office or colocated Data never leaves your infrastructure

For organisations that must follow the GDPR (DSGVO), this is the most reliable setup there is — and no comparable offer exists from the competition in Germany. The stand-alone system is built for government offices and companies working with sensitive personal and financial data.

Team
from€25,000one-time
1–2 concurrent calls
  • Complete voice stack — LLM, STT & TTS included
  • Full dashboard, recordings & transcripts
  • Installation & onboarding
Most popular
Business
from€50,000one-time
Up to 10 concurrent calls
  • Everything in Team
  • Sized for reception desks & call teams
  • Priority support
Enterprise
from€100,000one-time
Unlimited concurrent calls
  • Everything in Business
  • Your own branding — full white-label
  • Custom integrations & rollout support

Licenses start at €25,000 and scale with the number of concurrent calls and the integration work your systems require. Hardware sizing and integration scope are defined together during scoping. Prices exclude VAT.

For AI agents

Your AI agent can run all of this without you

Everything on this page is a REST API too. Give ChatGPT, Claude or any other AI model a single API key and it builds the agent, gives it a number, tests it, puts it on real calls, and reads the results back. No dashboard, no browser automation, no clicking.

Build and test

Create and configure agents, run a scripted conversation through the real pipeline, then place a live test call — all from the API.

POST /api/v1/agents

Read everything back

Transcripts, recordings, summaries, captured variables, call history and billing records. Watch calls in progress, or end one mid-call.

GET /api/v1/calls/{id}

It can pay for itself

The billing endpoints speak x402: your agent settles in USDC on Base straight over HTTP. No card, no checkout, nobody woken up.

POST /api/v1/billing/x402/topup/25

Two an agent can build unattended

CRM lead qualifier

Upload the leads, write the qualifying questions, let it dial. Every answer the caller gives comes back as a captured variable on the call — and on your webhook — ready to write straight into the CRM. It reads your do-not-call list before it dials, not after.

Practice appointment desk

It checks the real Google Calendar while the patient is still on the line, offers the slots that are genuinely free, books the appointment and emails the invitation. Cancellations and reschedules too. Connect the calendar once; everything after that is the API.

One human step: mint a key in Settings → API & Webhooks. After that an agent needs nothing from you.

FAQ

Questions, answered

No. You describe what the agent should do in plain language, pick a voice, and connect a number — all from the dashboard. Most people are live in under ten minutes, no developers needed.
Yes. Connect your existing line over SIP — point your carrier or PBX at callagent, or register your device to us. You can also get a fresh local number in seconds from the dashboard.
Most products send your text to a voice API and play back whatever comes out — correct words, flat delivery. We train and serve our own speech models, and the agent marks up its own delivery before it speaks: emphasis, pacing, emotion, a breath or a laugh where one belongs. That is also why it starts speaking in about 0.14 s, can be interrupted mid-word, and gets phone numbers, emails and street names right. 42 voices across 10+ languages, and every one of them can be tuned per agent.
Turn on “forward to a human” and set a number. The agent hands the call off when a caller asks for a person — passing along the conversation so far — or you can take over a live call yourself from the dashboard.
Yes — create an account, build an agent and test it in your browser for free, no credit card required. You only pay for live call minutes once you go live, starting pay-as-you-go.
Yes. We license callagent as a stand-alone system installed on your premises — at your office or colocated. The LLM, speech-to-text and text-to-speech all run on your machines and calls complete without any external API usage, which makes it the most reliable option for GDPR-bound organisations, government offices and companies handling sensitive personal or financial data. Licenses start at €25,000 for 1–2 concurrent calls, €50,000 for up to 10, and €100,000 for unlimited calls with your own branding — final pricing scales with call volume and integration requirements. Write to sales@callagent.pro.

A voice is judged by ear, not by datasheet

Create an agent, call it from this page, and listen to how it says things. Five minutes, no credit card.

No credit card · Free test calls · Cancel anytime