Daniel Keinrath is Co-Founder and CEO of fonio.ai, a Vienna-based AI voice platform that is the market leader for AI-powered phone assistants in the DACH region, serving over 7,000 SMB customers across nine markets.

Daniel studied at WU (Wirtschaftsuniversitat Wien) and built his entrepreneurial track record early, co-founding event startup Dot Events and influencer marketing platform Adpool before scaling Getnano to 2,500 customers over four years and selling it to Stylink in early 2023.

A recognized Forbes 30 Under 30 honoree, Daniel validated fonio.ai by selling the product ten times before it was even built, using just a landing page and 1,000 euros in ads, proving radical demand before writing a line of code.

fonio.ai bootstrapped to 2M ARR in 10 months, raised a 3M euro angel round in just 11 days in December 2025, and followed that with a 17M USD seed round led by 20VC at a 140M USD valuation in 2026, also acquiring rival fluently in September 2025.

fonio.ai now processes over 2 million calls monthly, has grown to a team of 50+ people, is on track for 10M USD ARR by summer 2026, and is expanding globally with new AI agents across WhatsApp, email, and chat.