fonio.ai secures €3 million in one of Europe’s largest angel rounds

Vienna, 2^nd of December 2025 – The Vienna-based AI startup fonio.ai, the market leader for AI-powered customer communication in the DACH region, has closed a €3 million financing round. The capital comes from 13 selected European angel investors and will be used to further advance the company’s technology to optimize customer communication and accelerate expansion into additional European markets.

Among the participants are experienced entrepreneurs and early-stage investors such as Daniel Gutenberg (former Meta investor), Christian Stieber (100+ investments), Robert Wuttke (General Partner at 10x Founders), Jens Lapinski (Angel Invest), as well as a Sequoia Scout. The round was completed in just eleven days and is, in terms of its volume, one of the largest pure angel rounds in Europe.

“The strong demand from angel investors shows that we are solving a real market problem that has challenged companies and their customers for years,” says Daniel Keinrath, CEO and co-founder of fonio.ai. “The way phone-based customer communication works today belongs to a different era. We are developing technology that modernizes this process at its core and enables companies to be faster, more efficient, and more human in the way they stay reachable.”

Expansion into a full omnichannel solution

fonio.ai is fundamentally modernizing traditional phone-based customer communication, making it significantly more efficient, reliable, and user-friendly through AI. The company is pursuing a highly scalable model in which a single employee can manage a company’s entire customer communication with the support of fonio.ai’s AI agents. This reduces time and costs as well as the need to outsource tasks to call centers. At the same time, the technology is already advanced enough that the AI sounds natural, recognizes emotions, and responds empathetically, behaving almost like a real conversation partner.

With this new funding, fonio.ai plans to extend its lead: what began as a voice-only solution will evolve into a fully-fledged omnichannel AI platform that automates email, chat, and additional communication channels. The goal is to establish, from Europe, a new global standard for intelligent and scalable communication.

Exceptionally rapid growth

fonio.ai is currently growing at a pace rarely seen in the European SaaS sector. The company now serves nearly 4,000 customers across the DACH region, automates around 800,000 calls each month, and has operated profitably and fully bootstrapped since day one. Monthly revenue currently sits just under €300,000, generated by a team of only twelve employees. The company aims to reach €1 million in monthly revenue by June 2026.

This trajectory has not gone unnoticed by investors. “Founders who can bootstrap from zero to €300,000 in monthly revenue in just 14 months are rare, even for one of Europe’s most active angel investors,” says investor Christian Stieber.

Although total investor interest amounted to roughly €6 million, fonio.ai deliberately chose to raise only €3 million. This ensures low dilution, preserves strategic control, and keeps the company focused on fast, clean, operational growth.

To maintain this momentum, fonio.ai now plans to expand beyond the DACH region and make its solution rapidly available in additional European markets.