v0.1.10 (Beta)
Watch your web videos.
Dubbed in your language in real time.
Kuma captures video audio directly in your browser, translates voices in real time, and streams synchronized dubbing with automatic audio ducking.
Chrome, Edge, Brave and Opera: coming soon
Compatible with your streaming platforms
YouTube
Udemy
Watch any video without reading subtitles.
Natural synchronized voice streaming live in your browser, with automatic background audio ducking on YouTube, Coursera, or Twitch.
Sub-800ms latency
Real-time streaming pipeline combining voice activity detection (VAD) and continuous vocal inference for immediate delivery.
Natural, expressive dubbing
Renders the original speaker's tone and cadence through high-quality voice synthesis, without sounding like cold synthetic audio.
Intelligent audio ducking
Automatically lowers the original audio under the dubbed voice and smoothly restores it at the end of each sentence.
Lightweight extension (Manifest V3)
Engineered for minimal RAM footprint. Zero slowdown when loading your web pages.
Secure USD payments
Pay by international credit card (Visa, Mastercard, Amex) via Polar, billed exclusively in US dollars.
Ephemeral audio processing
Audio streams are processed on the fly in memory. No recordings of your viewings are ever stored.
Measured acoustic performance.
A real-time architecture engineered to preserve acoustic fidelity and synchronization without perceptible delay.
<800ms
Streaming latency
99.8%
Detection accuracy
15 min
Free credit without credit card
100% USD
Secure card payment
Ready in 3 simple steps.
No complicated setup. Everything happens seamlessly directly in your media player.
1
Install the Kuma extension
Add Kuma to your browser in one click. Your 15 free minutes are immediately available upon account creation.
2
Play your video
On YouTube, Coursera, or Twitch, the Kuma action button appears directly on the media player.
3
Listen to the live dubbing
Select your target language. Kuma translates speech in real time with smooth attenuation of the original soundtrack.
Clear, commitment-free plans.
Get started with 15 free minutes without a credit card. Then choose the plan tailored to your listening volume.
Free
Instantly test video dubbing with no commitment.
$0
/ month
- 15 minutes of video dubbing included (900s)
- Instant live voice translation
- Natural-sounding neural voices
- Smart background audio ducking
- Firefox extension (Chrome, Edge and Brave soon)
Pro
POPULARIdeal for creators, students, and daily viewing.
$9.99
/ month
- 10 Hours of dubbing every month
- Automatic rollover of unused credits
- Low-latency voice synthesis
- Audio timing sync & background ducking
- Secure credit card payments
Studio
For localization agencies, teams, and heavy usage.
$27.99
/ month
- 30 Hours of dubbing every month
- Built for agencies and localization teams
- 3x the monthly hours of Pro
- Built for regular content production
- Priority email support
Frequently asked questions
Everything you need to know about live dubbing, supported languages, and billing.
Available on Firefox
Ready to break the language barrier?
Install the Kuma extension and launch your first dubbed video today with 15 free minutes.
Chrome, Edge, Brave and Opera: coming soon