Universal-3.5 Pro API pricing

Universal-3.5 Pro by AssemblyAI, priced on AssemblyAI API. Price for pre-recorded audio.

Universal-3.5 Pro API pricing starts at $0.21/hour (official pricing page, verified Oct 9, 2026).

TierPrice1 hour100 hours
Single price$0.21/hour$0.21$21.00

Verified against the official pricing page on Oct 9, 2026. Official pricing page

Examples are unit price × length or count. They do not include retries, free allowances, or inputs and options that the official page prices separately.

Other speech-to-text models

Starting prices from each model's official pricing page, verified Oct 9, 2026. Every tier and its source are on the model's own page.

Questions

How much does Universal-3.5 Pro cost per hour of audio?
Universal-3.5 Pro: $0.21/hour.
How much does it cost to transcribe 100 hours of audio with Universal-3.5 Pro?
At the listed price, 100 hours of audio with Universal-3.5 Pro cost $21.00, before any separately priced inputs, options or retries.
Are there lower-priced alternatives to Universal-3.5 Pro?
Among the models listed on modelpick, these start lower: Universal-2 ($0.15/hour) (official pricing pages, verified Oct 9, 2026). Starting prices can be for a different tier, and output quality differs; compare the same tier and samples before switching.