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AssemblyAI pricing

AssemblyAI, 2026

Read on October 17, 2026

What it is: AssemblyAI's pay-as-you-go prices for its speech-to-text models, per hour of audio, with add-on features such as keyterms prompting.
How much weight it carries: The vendor's own price page, read on 2026-10-17. Vendor pages change without notice, and enterprise contracts are priced separately. Accuracy claims on the page are the vendor's own.

Facts taken from this source

AssemblyAI's pricing page says its free tier includes up to 185 hours of pre-recorded transcription and up to 333 hours of streaming transcription.
“The free tier includes up to 185 hours of pre-recorded transcription and up to 333 hours of streaming transcription.” (Pricing page, sign-up FAQ)
AssemblyAI's pricing page lists speaker diarization, which splits a transcript by speaker, at $0.02 per hour of audio.
“Detect multiple speakers in audio files and segment the transcript into utterances, showing what each speaker said. $0.02 /hr” (Models section, Speaker Diarization row)
AssemblyAI lists its Universal-2 speech-to-text model at $0.15 per hour of audio on pay as you go.
“Universal-2 Our highly accurate speech-to-text model trained on over 12.5 million hours of audio data. Supports 99 languages. Exceptional accuracy at a lower price. $0.15 /hr” (Models section, Universal-2 card)
AssemblyAI lists its Universal-3.5 Pro model at $0.21 per hour of audio on pay as you go.
“with native code switching and our most accurate speaker diarization yet. $0.21 /hr” (Models section, Universal-3.5 Pro card)