Fact · Transcription
0.30US dollars per hour of audio
AssemblyAI lists its Sync Speech-to-Text API, which transcribes one clip of up to 2 minutes per request using Universal-3.5 Pro, at $0.30 per hour of audio on pay as you go.
Quote found word for word on the live source, last checked October 19, 2026
In the source's own words
“Process up to 2 minutes per request, get results back in ~134 ms (p50). Includes per-word timing and confidence across 18 languages. $0.30 /hr”
AssemblyAI pricing, AssemblyAI, 2026, Pricing page, Sync Speech-to-Text API section, Sync API card.
Open the original- What it measures
- A single call that returns a finished transcript for a recorded clip. It is not a streaming connection.
- What it does not show
- Vendor list price, read on 2026-10-19. Clips are limited to 2 minutes per request.
In the data
A row of Speech-to-Text API Pricing: Cost per Hour of Audio, as AssemblyAI Sync API, Universal-3.5 Pro: 0.3 US dollars per hour of audio.
- Provider
- AssemblyAI
- Product
- Sync API (Universal-3.5 Pro)
- Mode
- Batch (recorded audio)
- Tier
- Pay as you go
- As of
- 2026-10
Source
Used to calculate
- In the speech-to-text and transcription prices dataset, the 22 published figures for “Batch (recorded audio)” have a median of 0.21 US dollars per hour of audio, ranging from 0.04 to 6.
- The speech-to-text and transcription prices dataset holds 34 data points, each a published figure traced to its source.
- The speech-to-text and transcription prices dataset draws on 15 distinct sources.