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About

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.

About

VoxFlux is a browser-based live-event platform for real-time captions, AI-translated text, and translated audio. Event operators can connect a microphone, USB audio interface, or mixer feed, configure a session in a web dashboard, and send captions or translated text to venue screens, livestreams, relay displays, and other browser-based outputs. For audio translation, organizers create an Audio Room and share a listener link or QR code so attendees can listen on their phones or computers without installing an app. The service supports event workflows such as conferences, corporate meetings, webinars, hybrid productions, broadcasts, and multilingual presentations. It also provides session monitoring, caption display controls, transcript downloads, and pay-as-you-go usage credits for event teams, AV professionals, production companies, and broadcasters.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Users that need an AI-powered live captioning and subtitling tool

Audience

Event organizers, conference producers, AV companies, and live-streaming teams.

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Not Supported

API

Offers API Not Supported

Screenshots and Videos

Screenshots and Videos

No images available

Pricing

$0.09/min
Pay as you go
Free Version Not Supported
Free Trial Not Supported

Pricing

$7/hour
Live captions cost $7/hour for the first concurrent session and $3/hour for each additional concurrent session. Audio translation is billed by the hour, with additional concurrent sessions at $7/hour. Credits are pay as you go; no subscription is required, and free credits are included.
Free Version Not Supported
Free Trial Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

Line 21
Founded: 2023
United Kingdom
line-21.com

Company Information

VoxFlux
United Kingdom
voxflux.ai/

Alternatives

Alternatives

AI-Media LEXI

AI-Media LEXI

AI-Media
Koine

Koine

VOIS AI AS
CapMate

CapMate

Venera Technologies
Orato Flow

Orato Flow

Orato Flow - AI Translation for Events

Categories

Closed Captioning Supported
Speech Recognition Supported
Speech to Text Supported
Subtitle Supported

Categories

Speech Recognition Features

Audio Capture Supported
Automatic Form Fill Supported
Automatic Transcription Supported
Call Analysis Supported
Concatenated Speech Supported
Continuous Speech Supported
Customizable Macros Supported
Multi-Languages Supported
Specialty Vocabularies Supported
Speech-to-Text Analysis Supported
Variable Frequency Supported
Voice Recognition Not Supported

Integrations

Deepgram Supported
Facebook Supported
Microsoft Teams Supported
OpenAI Supported
Twitch Supported
Videolinq Supported
YouTube Supported
Zoom Supported

Integrations

Deepgram Not Supported
Facebook Not Supported
Microsoft Teams Not Supported
OpenAI Not Supported
Twitch Not Supported
Videolinq Not Supported
YouTube Not Supported
Zoom Not Supported
Claim Line 21 and update features and information
Claim Line 21 and update features and information
Claim VoxFlux and update features and information
Claim VoxFlux and update features and information