Echoly — Live YouTube Translation

Hear any YouTube video in your language. Live AI dubbing, picks voice + language, runs on your Kyma key.

Echoly turns any YouTube video into a live dub in the language you understand best. Click the icon, pick a voice and a target language, press Start. The translated voice plays back over the video with sub-second lag in Realtime mode, ~5 seconds in Standard mode. Why Echoly is different • No account, no signup. You bring a Kyma API key (kymaapi.com) and the extension runs on your own balance. • Two tiers — pick what fits the moment. - Realtime · sub-second lag · clones the speaker's voice or picks from 9 OpenAI voices · ~$0.46 per 10 minutes. - Standard · ~5s lag · 5 curated MiniMax voices, all multilingual · ~$0.25 per 10 minutes. • 13 target languages: English, Vietnamese, Japanese, Korean, Chinese, French, Spanish, German, Portuguese, Hindi, Indonesian, Italian, Russian. • Live source captions side-by-side with the dub if you want to follow along. • Translation history — last 16 turns, scrollable. • Independent volume control for the original audio and the dub. • In-page panel you can drag, resize, hide. • Pause/play the YouTube video and the dub follows instantly. No reconnect. • 60-minute hard auto-stop with a 5-minute warning so you don't accidentally leave it running. • Sessions end cleanly when you close the tab. What it's good for • Watching keynotes, talks, and product launches in your native language without waiting for human subs. • Following long-form interviews, podcasts, and lectures faster than reading captions. • Practicing a language by listening to native English content with a parallel dub. How it works Standard tier sends short audio chunks to Kyma, which routes through Whisper for transcription, Gemini for translation, and MiniMax for the voice. Realtime tier opens a peer-to-peer WebRTC connection to OpenAI Realtime via a Kyma-minted ephemeral token — your audio never round-trips through any other server. What it doesn't do • No account creation. No telemetry. No analytics. No data stored on Echoly's side — see our privacy policy. • Not a download tool. Echoly does not save audio, transcripts, or videos to your disk. Get a Kyma key at kymaapi.com. Free starter credit on signup; pay-as-you-go after that.