Blixt’s Phonon runtime adds word timing to browser speech

Where the timing comes from

The runtime uses the model’s attention and audio loudness to estimate word boundaries while streaming 24 kHz speech. That could keep highlighted text aligned with playback; timing accuracy was not independently measured.

Blixt’s Phonon runtime adds word timing to browser speech ↗

Download and performance limits

The maker reports a 44.3 MB first visit and 115 times real-time synthesis on an M3 Max. Those figures describe its own benchmark, with separate warm-cache and first-download conditions. The base Gradium card lists a different weight-file size because it describes a different packaging format.

Blixt’s Phonon runtime adds word timing to browser speech ↗Original Phonon 31M model card ↗

What you can do

1. Inspect the benchmark conditions and test pronunciation and timing on your own device. Open reference ↗

Where the evidence stops

README and original model card checked November 4. No runtime installed, audio heard or browser performance tested. Browser support and timing quality remain author-reported.

Sources read. Primary sources checked November 4, 2026. No third-party software, model inference or complete workflow executed.

Sources & further reading