American English interviews, podcasts, and customer-research recordings often mix reduced conversational speech with names, acronyms, and compact number phrases. Use the en-US hint for that intent, then keep the synchronized source beside the draft while you enforce the US spelling and date conventions your audience expects.
Where this workflow fits
- US interviews and podcasts
- American English lectures
- Recorded customer research
What to expect from American English audio
This page uses the regional en-US tag while capability matching remains anchored to the reviewed English base code. The practical review targets are US spelling, names, acronyms, reduced speech, and ambiguous numbers. The en-US hint stays inside the frozen English base-language route; it does not claim a separate provider model or accuracy score.
Review the details that carry meaning
Names, acronyms, reduced speech, and mixed-language passages still require source-linked review. Use word-level playback for US spelling, names, acronyms, reduced speech, and ambiguous numbers; 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 en-US hint stays inside the frozen English base-language route; it does not claim a separate provider model or accuracy score.
- Names, acronyms, reduced speech, and mixed-language passages still require source-linked review.
Reviewed provider capability
deepgram · nova-3
root en · tiers fast, standard, precision
- Automatic detection
- Reviewed yes
- Diarization
- Reviewed yes
- Word timestamps
- Reviewed yes
Reviewed provider capability
assemblyai · universal-3-5-pro
root en · tiers precision
- Automatic detection
- Reviewed yes
- Diarization
- Reviewed yes
- Word timestamps
- Reviewed yes
Reviewed provider capability
assemblyai · universal-2
root en · tiers fast, standard, precision
- Automatic detection
- Reviewed yes
- Diarization
- Reviewed yes
- Word timestamps
- Reviewed yes
Questions from the workflow
How should I review a American English transcript?
This page uses the regional en-US tag while capability matching remains anchored to the reviewed English base code. The en-US hint stays inside the frozen English base-language route; it does not claim a separate provider model or accuracy score. The final pass targets US spelling, names, acronyms, reduced speech, and ambiguous numbers, 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
- American English language and orthography editorial reference · checked 2026-07-20
- Deepgram models and languages overview · checked 2026-07-20