Line 21 Headquarters & Office Locations

Line 21 is headquartered in Austin, Texas, United States. Founded in 2023, the company has 3 recorded locations across 3 countries and employs approximately 6 people worldwide.

Where is Line 21's main office?

Line 21's main headquarters office is located at 3913 Todd Ln ste 510, Austin, Texas 78744, United States. This is the company's primary corporate address.

Line 21 regional offices

Beyond its headquarters in Austin, Line 21 has recorded locations in United States, South Korea and United Kingdom.

Line 21 contact information

The main switchboard for Line 21 headquarters can be reached at +44 7469 432480. Official website: line-21.com.

What does Line 21 do?

Line 21 provides AI-powered live captions and subtitles, ensuring seamless accessibility for live events, streaming platforms, and digital content. Our hybrid approach combines AI automation with human expertise, delivering high-accuracy captions that adapt to industry-specific terminology, accents, and niche references. By leveraging our AI Proofreader, we enhance real-time captions, reducing errors and making live experiences more inclusive and engaging. Our solution is designed for event organizers, broadcasters, and language service providers who need scalable, cost-effective, and high-quality captions. Traditional human captioning is expensive and non-scalable, while ASR solutions often lack accuracy. Line 21 bridges this gap by offering real-time AI-enhanced captions that integrate seamlessly into event tech and streaming workflows. With Line 21, businesses can improve accessibility, comply with regulations, and reach wider audiences. Our cloud-based platform reduces logistical costs and environmental impact, eliminating the need for in-person captioners. Whether for conferences, esports, or corporate events, we make live content truly inclusive, accurate, and future-proof.