Speech-to-text

AssemblyAI vs Azure Speech (STT)

AssemblyAI has the lower normalized list price (6.7× cheaper). 31 of 33 European languages are documented by both; 0 only by AssemblyAI, 2 only by Azure Speech (STT).

AssemblyAI

$0.0025 /min

0.15 USD/hr (Universal-2; Universal-3.5 Pro 0.21/hr) · source · checked 2026-10-16

31/33 languages · language table (pre-recorded)

Try AssemblyAI →

Azure Speech (STT)

$0.017 /min

1 USD/hr real-time standard (us-east) · source · checked 2026-10-16

33/33 languages · locale table (page covers STT+TTS tabs; not split by scraper)

Try Azure Speech (STT) →

Both · 31

bg hr cs da nl en et fi fr de el hu it lv lt mt pl pt ro sk sl es sv no uk tr sr ca is bs mk

Only AssemblyAI · 0

—

Only Azure Speech (STT) · 2

ga sq

List prices, normalized to USD/min; see each provider page for assumptions. Language support from official docs. * = affiliate link; never affects comparisons.

Weekly · free

Get voice AI price changes in your inbox.

One short email a week. Subscribers get the full price and language dataset (CSV, 25 providers × 33 languages) in the welcome email.