- Fonio.ai hit $10 million in annual recurring revenue just a year after launching, keeping its monthly growth rate above 30%.
- The team grew from just one person to 81 in 14 months, and Fonio.ai now aims for €20-30 million in annual recurring revenue by the end of the year.
- This milestone comes after a $17 million seed round led by 20VC, which valued the company at $140 million.
Daniel Keinrath made the first sales for fonio.ai before the product even existed. He built a website for €200, spent €1,000 on Meta ads, and reached out to every lead himself. In just 14 days, he closed 10 deals using only a PowerPoint and a promise of a 2-3 month setup.
After being turned down twice, he convinced Matthias Gruber to come on board and help build the product. A year later, fonio.ai has passed $10 million in annual recurring revenue and has grown more than 30% each month since launch, as Tech Funding News learned.
The company creates AI voice agents for handling customer calls and works with small and medium-sized businesses.
“The first big step was changing our pricing model, then launching our own top-tier turn-detection model. You won’t find a more natural-sounding phone agent than fonio,” says Keinrath, co-founder and CEO of fonio.ai, to TFN.
A fast-changing market and a founder pushing for quick progress
The AI voice agents market was valued at $2.54 billion in 2025 and is expected to reach $35.24 billion by 2033, growing at 39% each year. Gartner predicts conversational AI will save contact centres $80 billion in labour costs worldwide this year, as call volumes rise and companies look to automate support without hiring more staff.
Fonio started in Vienna in autumn 2024, founded by Keinrath and Gruber, who serves as chief technology officer. Keinrath had earlier sold his influencer-marketing startup, Getnano, to Stylink. Gruber was chief product officer at Platomics, where he led a team of almost 100 people.
Keinrath says the company’s growth has been fast and full of energy. Fonio added €1.5 million in annual recurring revenue in just one month this year, which he now sees as normal.
“It’s pretty normal for us. We focus on getting things done and know we have a limited time to win this market. If we reach €1.5 million in ARR one month, our next goal is at least €1.8 million the following month,” he says.
Keinrath is open about the less positive numbers. Net revenue retention is just under 100%, but the goal is to reach 100-110% by the end of the year. He says the current churn rate is healthy because there is no free trial. “We use strict paywalls, so customers have already made a real commitment when they start using the product,” Keinrath notes.
Fonio’s strategy and what sets it apart
The company integrates three technical pillars: voice quality, turn detection, and latency, plus emotion recognition that adapts an AI agent’s tone and pacing to the caller. The platform learns from conversations and recognises returning callers, automatically retrieving their context.
This feature, which complies with GDPR rules, needs to be enabled by businesses. For example, if a customer calls a plumbing company again, they could be greeted by name, and the agent would see their address and job history.
Fonio faces tough competition. Germany’s Parloa, which targets big enterprise contact centres, raised $350 million in a Series D round in January 2026 and is now valued at $3 billion. UK-based PolyAI has made progress with banks, telecoms, and transport companies, with enterprise contracts reportedly starting at about $150,000 per year.
Fonio has decided not to compete in those areas. “We believe the SME segment is the right market to focus on because we expect the enterprise segment to be increasingly dominated by players like OpenAI,” Keinrath says.
Fonio is the market leader for AI phone agents among small and medium-sized businesses in the DACH region, serving nearly 10,000 customers. Its value proposition is native European telephony, allowing customers to purchase European phone numbers and deploy AI agents directly within Fonio’s platform, without relying on external services such as Twilio.
Looking ahead: growth plans
Fonio raised $17 million in a seed round in June 2026 at a $140 million valuation, led by20VC. This followed a €3 million angel round in December 2025, which TFN also covered exclusively.
Fonio can keep growing more than 30% each month as it aims for €20-30 million in ARR, and Keinrath remains realistic. “Our goal is to keep growth at about 30%. Realistically, we expect the rate to drop a bit as we get bigger, but we still aim for more than 20% growth each month,” he concludes.
