European Portuguese lectures and documentary recordings can reduce unstressed vowels so strongly that a correct written form is not obvious from one syllable alone. Mark the source as pt-PT, review uncertain phrases at normal speed and slowed playback, and apply the vocabulary and orthography expected by readers in Portugal.
Where this workflow fits
- Portugal-based interviews
- European Portuguese lectures
- Documentary recordings
What to expect from European Portuguese audio
The pt-PT tag distinguishes European Portuguese editorial intent, but compatibility is still evaluated through the reviewed Portuguese base-language capability. The practical review targets are reduced vowels, European vocabulary, names, diacritics, and preferred orthography. The pt-PT tag uses the frozen Portuguese base capability and makes no separate accuracy claim for Europe.
Review the details that carry meaning
Reduced unstressed vowels, regional vocabulary, names, and preferred orthography require listening review. Use word-level playback for reduced vowels, European vocabulary, names, diacritics, and preferred orthography; a correction is accepted only when the surrounding clause and project convention support it.
Frozen deployment boundary
This page is published only because its language is present in capability snapshot m10-2026-07-20.1. It does not extend that catalog or claim a measured accuracy score.
- The pt-PT tag uses the frozen Portuguese base capability and makes no separate accuracy claim for Europe.
- Reduced unstressed vowels, regional vocabulary, names, and preferred orthography require listening review.
Reviewed provider capability
assemblyai · universal-3-5-pro
root pt · tiers precision
- Automatic detection
- Reviewed yes
- Diarization
- Reviewed yes
- Word timestamps
- Reviewed yes
Reviewed provider capability
assemblyai · universal-2
root pt · tiers fast, standard, precision
- Automatic detection
- Reviewed yes
- Diarization
- Reviewed yes
- Word timestamps
- Reviewed yes
Questions from the workflow
How should I review a European Portuguese transcript?
The pt-PT tag distinguishes European Portuguese editorial intent, but compatibility is still evaluated through the reviewed Portuguese base-language capability. The pt-PT tag uses the frozen Portuguese base capability and makes no separate accuracy claim for Europe. The final pass targets reduced vowels, European vocabulary, names, diacritics, and preferred orthography, with unresolved words kept beside their source timestamps.
Reviewed sources
- IANA Language Subtag Registry · checked 2026-07-20
- AssemblyAI model and supported-language documentation · checked 2026-07-20
- AssemblyAI pre-recorded audio supported languages · checked 2026-07-20
- Unicode CLDR likely-subtags language and script data · checked 2026-07-20
- European Portuguese language and orthography editorial reference · checked 2026-07-20