Not a product comparison — a look at the two underlying speech-recognition technologies themselves, and what that means for editors choosing between them.
Adobe's Speech to Text is a proprietary engine tuned for a defined, smaller set of languages. Whisper is an openly published model trained on a very large, multilingual dataset covering 99 languages, and has become a widely used reference point for transcription accuracy across the AI research community.
Whisper: 99 languages. Adobe Speech to Text: roughly 16, at time of writing.
Whisper's broad training data tends to make it handle accented speech and imperfect audio noticeably well.
Whisper is open-source and can run locally; Adobe's engine is proprietary and only available through Adobe's own tools.
Whisper itself isn't a Premiere Pro feature — Adobe's built-in captions use Adobe's own engine, not Whisper. To get Whisper's accuracy and language coverage inside Premiere Pro, you need a plugin that wraps it, like CaptionLab, which runs Whisper locally and outputs directly to your timeline.
One-time $39. Works offline. 14-day money-back guarantee.
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