About us
Line 21 is AI infrastructure for live media language services: captions, translation and AI dubbing in 100+ languages, for any live event.
- Founded
- 2023
- Team
- 3
- Languages
- 100+
- Backed by
- SFC Capital
What we do
AI made multilingual live events affordable, and now organisers want them in ten languages at once, with captions and dubbing, on every platform. Generic AI stumbles on names and jargon, and nothing joins the pieces together.
Line 21 orchestrates speech recognition, translation and voice models alongside human captioners, and delivers the result to venue screens, streams and meeting platforms in real time.
Two technologies sit at its core: an AI Proofreader that checks every caption line against a glossary built for each event, and a cloud video encoder that puts captions into live streams on any platform.
Team
A deliberately lean team, led by founders who have been building products for more than eight years.
Paul Balogh
CEO, Co-founder
Tech entrepreneur and frontend developer, founder of Zeta Books, Learn Forward and Hypersay.
Fabrizio Ruggeri
CTO, Co-founder
Senior full-stack developer and solutions architect. Worked for Hypersay and PrestaShop.
Victoria Hart
Head of Growth
Extensive industry knowledge from working for a major UK-based captioning agency.
Backed by SFC Capital
Line 21 is venture-backed by SFC Capital, the UK's most active seed investor.
Investor enquiries
Interested in Line 21's growth? Write to Paul Balogh, our CEO and co-founder, directly.