First inference
7.225s 17m 10s audio · 142.6x real-timeParakeet WGSL Browser ASR
This is a strong browser-systems result and a deliberately incomplete model-quality claim. The path is local after its verified cache is present, warm transcripts are repeatable, and runtime is dramatically faster than real time. Accuracy was not scored against a reference, visible transcript errors remain, and the first download is 386.5 MiB.
Headline Numbers
Warm inference
7.68–7.80s 132–134x real-timeVerified cache
386.5 MiB 29 browser assetsCompetitive Context
| System | Metric | Score | Size / Class | Comparable? | Readout |
|---|---|---|---|---|---|
| Parakeet WGSL warm browser run | real-time factor | 132–134x | 1,030.49-second public MP3 | Direct | Three repeated transcripts were byte-identical. |
| WhisperKit Mac-native baseline | WER and domain terms | not measured | future fresh comparison | Not comparable | No reference transcript was scored in this bounded smoke. |
Direct rows share this artifact's eval setup. Directional rows are useful market context but should not be read as leaderboard claims.
What the smoke established
| Claim | State | Boundary |
|---|---|---|
| Browser execution | validated | Chrome Apple/Metal FP16 subgroup path |
| Warm repeatability | validated | identical transcript hash |
| Local after cache | supported | main-tab network observation |
| Accuracy | unmeasured | visible errors; no WER reference |
Release Blockers
Accuracy not qualified
The smoke used no shared reference transcript or WER scorer and visible proper-name, phrase, and duplication errors remain.
Unblock: A WhisperKit comparison is a new owner-led experiment, not remaining historical work.
Large optional first download
The verified cache totals 405,252,493 bytes.
Unblock: Any product use must keep the download explicit, optional, and measured on Chrome and Safari.