Line 21 headquarters details
Location map
Open in Google MapsAll Line 21 office locations
| City | State / region | Country | Type |
|---|---|---|---|
| Austin HQ | Texas | United States | Headquarters |
About Line 21
Line 21 (Private) is headquartered in Austin, Texas, United States. Founded in 2023, the company operates across 3 countries with approximately 6 employees 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. This serves as the company's primary corporate address and is home to its executive leadership team.
Line 21 regional offices
Beyond its headquarters in Austin, Line 21 maintains 3 offices across 3 countries. Regional offices span 3 countries.
Line 21 contact information
The main switchboard for Line 21 headquarters can be reached at +447469432480. For investor relations, visit line-21.com/investor-relations.
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.
Frequently asked questions
Where is Line 21 headquarters?
Line 21's headquarters is located at 3913 Todd Ln ste 510, Austin, Texas 78744, United States.
How many offices does Line 21 have?
Line 21 operates 3 offices across 3 countries as of 2026.
What is Line 21's corporate address?
The official corporate address is 3913 Todd Ln ste 510, Austin, Texas 78744.
When was Line 21 founded?
Line 21 was founded in 2023 and has grown to employ approximately 6 people worldwide.
What is Line 21's phone number?
The main phone number for Line 21 headquarters is +447469432480.