AI Phone Assistant · Multi-Tenant · Made in Germany

Your Phone.
Always Answered.
Never Overwhelmed.

GoFonIA answers calls, schedules appointments, connects with warm transfers – like a real receptionist. Around the clock, on your own server.

Get Started Free → Discover Features ↓
30 Min
Free trial
89 €
Office / 1,500 Min
299 €
Scale / 5,000 Min
GDPR
100% compliant
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Features

Everything a receptionist can do – and more.

📞
Your Own Number
Each customer receives a dedicated German phone number. Ready to use immediately.
🧠
Company Knowledge via RAG
Crawl your website or upload PDF/DOCX. The agent finds the right answer – locally, no API key required.
NEW
📅
Live Appointment Booking
Meetergo integration: The assistant checks free slots and books appointments directly during the call. SMS confirmation included.
NEW
🎭
7 Emotional Voices
Mistral Voxtral: [happy], [calm], [sad], [surprised] – or clone your own voice for maximum brand recognition.
NEW
↗️
Warm & Cold Transfer
Introduces, waits, returns if unavailable – like a real secretary. No other AI system can do this.
Killer Feature
🔌
Connect Any API
JSON-based function tools for calendars, CRM, or any other system. Up to 10 tools per tenant.
🏢
Multi-Tenant
Fully isolated tenants: own API keys, prompts, voices & knowledge base. DID-based configuration at runtime.
NEW
🎵
Tenant MOH
Tenant-specific Music-on-Hold: 8 GB royalty-free MP3 library. Custom hold music per client — audible brand recognition.
NEU
📋
Call Summary
Transcript and AI summary via email after every call – SMTP configurable per tenant.
🔒
Your Server. Your Data.
On-premise infrastructure. No US cloud. Patient data stays with you – GDPR compliant, §203 StGB suitable.
Secretary Feature

Warm Transfer – just like a human.

GoFonIA doesn't just patch callers through – the assistant actively introduces them, waits for the colleague, and seamlessly returns if they're unavailable. No other AI system or traditional PBX can do this.

🌡️ Warm Transfer
"I'll connect you with Mr. Müller." → Colleague joins the room → Agent introduces → Agent leaves → Call continues.
❄️ Cold Transfer
"I'll put you through." → Direct Asterisk redirect → Caller lands immediately at the target. Fast and straightforward.
Why this is unique: The target participant joins as a second SIP participant in the same LiveKit room. If unavailable, the agent can seamlessly return: "Mr. Müller is unfortunately not available. Can I take a message or have him call you back later?"
Compatibility

Your Stack. Your Choice.

GoFonIA supports all common providers – freely combinable per tenant.

AI Model
Mistral AI Infomaniak Deepseek Groq
Speech → Text
Infomaniak STT Mistral Voxtral
Text → Speech
Mistral Voxtral Infomaniak TTS
SIP Trunks
voip2gsm Telekom Plusnet Iliad dus.net Custom
🇩🇪
Hosting in Germany · Hetzner data center
⚖️
GDPR compliant · §203 StGB suitable
🚫
No US Cloud Act · No third-country transfer
It's That Easy

Live in 3 steps.

1
Register
Sign up for free – no credit card required. 30 free minutes and a test number included.
2
Set Up
Write your prompt, choose a voice, add your knowledge base. Ready to go in 15 minutes.
3
Go Live
Assign a number – your AI phone assistant is now taking calls.
Testimonials

What Our Customers Say.

★★★★★
15 years of ViciDial — we thought we knew call center technology. GoFonIA showed us what AI telephony REALLY can do. The warm transfer is the killer feature. No provider worldwide can match it.
Markus K.
Head of IT, Insurance Broker · Cologne
★★★★★
We tested Vapi, Retell and Synthflow for three months. Nothing came close to GoFonIA's stability. The Call Control Layer makes the difference — this isn't a SaaS kit, this is real architecture.
Dr. Sabine W.
CTO, Health-Tech Startup · Munich
★★★★★
For us as a bank, the deciding factors were: GDPR, no US cloud, on-premise capable. GoFonIA was the only provider that could offer us the complete stack on our own hardware. Impressive.
Thomas H.
Head of Digital, Savings Bank · Hamburg
Pricing

Simple. Transparent. Scalable.

Start free. Upgrade when you're ready.

Freemium
€0 / month
30 minutes included · Test number
  • 1 AI assistant
  • Test phone number
  • 30 free minutes
  • Prompt editor
  • Call summary
Start Free
Recommended
Office
€89 / month
1,500 minutes included · ~€0.06 / min
  • Everything in Freemium
  • 1,500 minutes / month
  • Warm & Cold Transfer
  • Meetergo appointment booking
  • RAG knowledge base
  • Emotional voices
  • API integrations (up to 10 tools)
  • Multi-tenant capable
  • Email support
Upgrade Now
Scale
€299 / month
5,000 minutes included · ~€0.06 / min
  • Everything in Office
  • 5,000 minutes / month
  • Voice cloning
  • Priority support
  • Dedicated Account Manager
  • Custom SIP trunk
  • Whitelabel option
Upgrade
FAQ

Frequently asked questions.

How quickly can I get started?
In under 15 minutes. Register, configure your prompt, activate your test number – done. No technical knowledge required.
Can I connect GoFonIA to my CRM or calendar?
Yes! GoFonIA offers native Meetergo integration and JSON-based API tools for any CRM system. Calendar integration with a single click.
Is GoFonIA really GDPR compliant?
Absolutely. GoFonIA runs on your own server in Germany (Hetzner). No US cloud, no third-country transfer. Suitable for §203 StGB (medical practices, law firms, tax consultants).
What sets GoFonIA apart from other AI phone assistants?
The warm transfer: Our assistant actively introduces callers, waits for the colleague, and returns if they're unavailable – like a real secretary. Plus multi-tenant, on-premise, and voice cloning.
Can I use my own voice?
Yes! With the Scale plan you can clone your own voice. Plus, 7 emotional voices from Mistral Voxtral are available.