← Back to the directoryListed price$0.0167 / minPay-as-you-go information Languages140+Approximate coverage StreamingYesReal-time transcription DiarizationYesSpeaker separation
Azure AI Speech (Speech-to-Text).
Microsoft's enterprise STT with custom-model training and broad locale support.
Directory noteEnterprise hyperscaler option.
Azure AI Speech (Speech-to-Text) speech-to-text API overview
The four signals that usually narrow a speech-to-text shortlist first. Prices are the cheapest documented async tier; native billing units differ, so read the notes below.
Azure AI Speech (Speech-to-Text) pricing, languages, and features
Everything else the directory currently tracks, kept in one clear spec sheet for comparison.
- Company
- Microsoft
- Listed price
- $0.0167 / minStandard real-time, $1.00/audio hour (~$0.0167/min), billed per second. Batch is cheaper, but the exact rate is not clearly published. Standard and Custom Speech are tiers, not distinct models.
- Languages
- 140~140 is a BCP-47 locale count (multiple dialects per language), not a marketing language total.
- Real-time streaming
- Yes
- Speaker diarization
- Yes
- Free tier or trial
- YesPerpetual F0 tier: 5 audio hours/month for real-time (batch not included).
- Models
- Standard, Custom Speech
Pricing, languages, streaming, and diarization verified against Azure AI Speech (Speech-to-Text)’s primary sources on 2026-08-27. Word error rate and latency are not yet measured.
Official Azure AI Speech (Speech-to-Text) website and API documentation
Confirm current pricing and capabilities in the provider’s own materials before making a purchasing decision.
Primary sources used to verify this profile
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