← Speech-to-text
AssemblyAI
Universal-2
High-accuracy batch transcription ($0.15/hr). Newer Universal-3.5 Pro is $0.21/hr; add-ons such as diarization cost extra.
Capabilities, explained
What this API can do, and what each capability means for your project.
Real-time streaming
Yes
Transcribes live audio with low delay.
Speaker labels
Yes
Identifies different speakers.
Languages
99
Number of supported languages.
Word timestamps
Yes
Start/end time for each word, needed for subtitles.
Open weights
No
The model weights are downloadable, so you can self-host it or switch hosting providers without changing models.
Price history
Only one price recorded so far. The chart appears once the price changes.