DubTab gives real-time AI dubbing and live subtitles in 50+ languages for courses, streams and calls. Free trial; paid plans from $19/month.
Researched and fact-checked by Bartu Cavusoglu · Updated October 26, 2026
DubTab is a real-time voice translator and AI dubbing tool. It listens to whatever is playing on a computer and produces subtitles in your chosen language, along with an AI voice that speaks the translation. Nothing has to be uploaded first, so it works on live content as well as recorded video.
The company says both subtitles and voice arrive about half a second after the speaker. That timing is meant for livestreams, meetings and courses where pausing to translate breaks concentration.
DubTab is built by Ethan Hu, a software engineer. The first browser extension version shipped in January 2026, and desktop apps and local file dubbing followed later that year.
You install the extension or the desktop app, point DubTab at the sound, and press Start. The sound is sent out in short pieces, each turned into text and translated as it arrives, so nothing waits for the whole video to finish.
In a browser, DubTab listens to the tab you turn it on for. In the desktop app, it can capture one app or the whole computer, or play a video file you open in it. For local files, the dub is prepared slightly ahead of the playback position, and only the first lines take a few seconds.
The speech recognition, translation and AI voices come from specialist providers that DubTab works with. According to the company, these providers process audio and text only to deliver the service.
The core feature is live subtitles plus AI dubbing across 50+ languages. You can choose the AI voice and decide how much of the original audio stays audible underneath, from a quiet background to none.
Captions can be shown as translation only or in a bilingual mode with the original text beneath. This helps language learners who want to compare both. Desktop users can drop in MP4, MKV, MOV or WebM files, or a whole course folder, and DubTab reopens the lesson they were on.
Paid plans include AI Summary and Ask AI, which use separate AI credits. Account History keeps transcripts, translations and summaries, and saved dubbing is available only if switched on.
DubTab is a real-time voice translator and AI dubbing tool. It produces live subtitles and an AI voice in your language for browser tabs, desktop apps or local video files, about half a second behind the speaker.
Paid plans start at $19 per month for 9 hours (Starter). Pro is $39 for 20 hours, Power is $69 for 40 hours and Ultra is $129 for 80 hours. Yearly billing is 17% cheaper, and a Team plan is available through sales.
Yes. The free plan gives a one-time 15 minutes and 3 AI credits. It does not reset monthly, and no credit card is required.
The extension works on Chrome, Edge and Brave. The desktop app runs on Windows 11 and on macOS 14.2 or later, and there is no Linux version of the app. On Windows 10, use the extension.
DubTab states that it does not keep a recording of the original audio and has no microphone source. Dubbed audio is saved only if you turn that on, and you can delete it.
Yes, in the desktop app. It opens MP4, MKV, MOV or WebM files, or a whole course folder. The file stays on the computer, and only the sound of the part being prepared is sent.
It can translate Zoom, Google Meet and Teams in the browser with the extension, or in the desktop clients with the app. It is one-way, so it translates what you hear, not what you say.
It counts the audio time processed while DubTab is running. Subtitles and dubbing share one usage meter. AI Summary and Ask AI use separate AI credits.