AssemblyAI APIs & meters
Speech-to-text and audio intelligence APIs billed per hour of audio.
AssemblyAI Universal-2 speech-to-text
$0.0025 / audio minute
AssemblyAI Universal-3.5 Pro speech-to-text
$0.0035 / audio minute
AssemblyAI
Speech-to-text and audio intelligence APIs billed per hour of audio.
There are 2 published meters for AssemblyAI. List unit prices run from $0.0025 to $0.0035, with a median of $0.003. Billing units represented here: audio minute. The most recent price check in this group is 2026-08-14.
Official AssemblyAI pricing page
AssemblyAI list rates
A cheap host rate is not the same kind of number as a per-GB or per-million-events rate. The source column is the page used for the check.
| Service | Unit price | Unit | Source | Verified |
|---|---|---|---|---|
| AssemblyAI Universal-2 speech-to-text | $0.0025 | audio minute | AssemblyAI pricing | |
| AssemblyAI Universal-3.5 Pro speech-to-text | $0.0035 | audio minute | AssemblyAI pricing |
Questions about AssemblyAI rates
Do AssemblyAI monthly plans show up in the calculator total?
When the source publishes a per-unit rate, the calculator uses that linear list rate. Included quotas, monthly minimums, annual packs, and volume discounts still live on the official docs.