Related Products
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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.
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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.
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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
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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
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Audience
Users that need an AI-powered live captioning and subtitling tool
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Audience
Event organizers, conference producers, AV companies, and live-streaming teams.
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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API
Offers API
Not Supported
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API
Offers API
Not Supported
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Screenshots and Videos |
Screenshots and VideosNo images available
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Pricing
$0.09/min
Pay as you go
Free Version
Not Supported
Free Trial
Not Supported
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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
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Reviews/
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Reviews/
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Supported
In Person
Not Supported
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Company InformationLine 21
Founded: 2023
United Kingdom
line-21.com
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Company InformationVoxFlux
United Kingdom
voxflux.ai/
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Alternatives |
Alternatives |
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Categories |
Categories |
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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
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Integrations
Deepgram
Supported
Facebook
Supported
Microsoft Teams
Supported
OpenAI
Supported
Twitch
Supported
Videolinq
Supported
YouTube
Supported
Zoom
Supported
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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
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