AssemblyAI demos Dictation API: custom key terms fix vocabulary, sub-second transcription in 19 languages

AssemblyAI · x · 2026-09-18

AssemblyAI showcases its Dictation API: what the mic hears — "um so like can you send me the uh the Q3 numbers" — comes back as a clean "Can you send me the Q3 numbers?".

Two highlights: a key terms field where you enter vocabulary your users actually say (drug names, SKUs, product names) so those words are spelled correctly instead of phonetically close — the point where most dictation projects die — and sub-second turnaround for typical short clips on Universal-3.5 Pro across 19 languages. Developers are invited to test with their own audio.

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