VoxRT Wake-Word
Always-on wake-word that fits in 100 KB
What it does
VoxRT Wake-Word is a ~100 KB always-on wake-word detector that runs fully on-device on iOS, Android, Linux, and in the browser via WASM. The default "Hey Assistant" model holds at 5.3% RTF sustained on a $15 Raspberry Pi Zero 2 W, and 0.16% RTF in Chrome via WASM SIMD128. Free for the standard phrase across all platforms. Custom brand phrase or language is available on a paid tier.
Live in-browser demo of the VoxRT wake word. Say
Your audio never leaves this page. The model highlights "Hey Assistant" while ignoring all other speech — including similar-sounding words and phrases like "Hey sister" or "Assist me". RTF (real-time factor) is processing time divided by audio duration — an RTF of 0.01 means one second of audio takes 10 ms to process, so keeping up with live speech uses about 1% of one CPU core. This benchmark generates 60 seconds of audio right in your browser , pushes it through the wake-word engine as fast as your CPU allows, and reports the measured RTF. For reference, VoxRT's published browser numbers on this same model: 0.16% on a MacBook Pro M4 (Chrome), 0.23% on an iPhone 13 Pro Max (Safari), 1.17%…from voxrt.com
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