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Upload a file, record live, paste a link, or import from your cloud, then watch it transcribe.
RealtimeVoiceKIT is a closed captions generator that creates accurate, accessible CC from any audio or video in your browser, powered by leading frontier AI from OpenAI, Anthropic, and Google. Upload a file and get closed captions with speaker labels, confidence scores, and export to SRT, VTT, or TXT.
Who needs closed captions
Accessibility
Meet accessibility goals so deaf and hard-of-hearing viewers can follow.
Education
Caption lectures and courses for compliant, inclusive learning.
Corporate video
Add closed captions to training and all-hands recordings.
Public media
Generate CC that meets viewer expectations across platforms.
What's included
How to create closed captions
Upload your file
Drag in audio or video, or paste a link. No account hoops.
Generate captions
The AI transcribes, labels speakers, and time-codes every caption.
Export CC
Download SRT or VTT to attach as closed captions to your video.
Frequently asked questions
Is the closed captions generator free?
Yes. You get 10 free minutes every month with no credit card, and CC export is included.
What is the difference from subtitles?
Closed captions can be turned on or off and include speaker labels for accessibility.
Which AI powers it?
RealtimeVoiceKIT is powered by leading frontier AI from OpenAI (ChatGPT), Anthropic (Claude), and Google (Gemini).
Can I caption in other languages?
Yes. Generate closed captions in 100+ languages and translate them before download.