Fonio is an AI phone assistant. It answers inbound and outbound calls, holds a real conversation, books appointments, qualifies leads and routes the call, then emails a transcript and summary. The pitch is a phone employee that works 24/7 and sets up in about ten minutes with no code. What makes it interesting versus the wave of US voice-agent startups: it's Austrian, runs its own orchestration layer, and keeps all data in the EU.
What it does
You configure an assistant with a voice, language, greeting and call-handling rules, point a phone number at it, and it runs. Core capabilities:
- Inbound calls - answers, transcribes, handles the inquiry or routes it.
- Outbound calls and campaigns - on the Team plan and up.
- Appointment booking - schedules into a connected calendar during the call.
- Lead qualification - asks the qualifying questions and logs answers.
- Transcripts and summaries - emailed after each call.
- Live tool calls - reads and writes to CRM, calendar and databases mid-conversation.
Two technical claims set it apart from a generic IVR. First, turn detection good enough to handle interruptions and dialects (it markets strong performance on hard German dialects). Second, emotion-aware responses that adjust tone and speed to the caller. Whether that survives contact with real callers is the open question, but the positioning is sound.
Languages and voices
25+ languages and 20+ voices. The site itself ships in English, German, French, Polish, Italian and Portuguese, which maps to its actual markets (DACH-first, expanding across Europe).
Pricing
Per-minute usage on top of a monthly base. 15% off with annual billing. 30-day money-back guarantee, no explicit free trial.
| Plan | Price | Included minutes | Overage | Concurrency | Best for |
|---|---|---|---|---|---|
| Solo | EUR 99/mo | 1,000 | EUR 0.15/min | none | 1-20 calls/day |
| Team | EUR 299/mo | 3,000 | EUR 0.12/min | 3 | 20-100 calls/day |
| Scale | from EUR 499/mo | 5,000+ | EUR 0.08/min | custom | 100+ calls/day |
Notes:
- Solo includes 1 phone number, 1 assistant, 1 user. Extra numbers EUR 7/mo each.
- Team adds SIP connection, outbound campaigns, unlimited assistants and users.
- Scale adds custom voice, zero data retention and a custom SLA.
- Minute top-ups: EUR 15 / 100 min (Solo), EUR 12 / 100 min (Team).
- WhatsApp add-on: EUR 79/mo for 800 conversations.
Per-minute economics land around EUR 0.08-0.15, which is the same ballpark as US competitors but with the EU-hosting angle baked in.
Compliance and hosting
This is the real differentiator for a European buyer. Servers in Nuremberg, Germany. GDPR and EU AI Act compliant, EU data residency. Fonio builds its own orchestration layer rather than white-labelling a US service, so the call data stays inside its stack. For anyone selling into regulated German or Austrian SMBs, that story matters more than a marginally better voice.
Who makes it
Founded in 2024 in Vienna by Daniel Keinrath and Matthias Gruber. Fast traction: 7,000+ customers across nine markets, 2M+ calls a month at time of writing. In 2026 it raised a USD 17M seed led by 20VC at a reported ~USD 140M valuation, with angels from Hugging Face, Synthesia, HubSpot and Revolut. One of the largest seed rounds in Austrian startup history. The framing has shifted from "AI phone assistant" toward an "AI operating system for SMBs", so expect the product to grow past telephony.
My take
The voice-agent space is crowded and mostly US-built on the same few models. Fonio's edge is not the model, it's the European packaging: own orchestration, EU data residency, native German/dialect handling, quick no-code setup. For a DACH-based seller or SMB, that removes the two usual blockers (data location and language quality) in one move. Worth a look as a comparison point against US tools like Vapi or Bland when EU compliance is non-negotiable. The number-to-watch is real-world call quality on edge cases, not the demo.