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Azure AI Speech (STT) Review

Enterprise-grade STT inside the Azure cloud ecosystem

Among the 43 speech-to-text tools we track, Azure AI Speech (STT) has the 1st-widest language coverage - a fit for multilingual and localization projects.

From $1,600/mo

Facts verified Jul 24, 2026Try Azure AI Speech (STT) →

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What we know about Azure AI Speech (STT)

Azure AI Speech (STT) is a speech-to-text apis platform: enterprise-grade STT inside the Azure cloud ecosystem. This profile tracks every Azure AI Speech (STT) fact we have verified, each linked to a primary source and dated.

On pricing, Azure AI Speech (STT) starts at $1,600 per month for its entry tier. That is the sticker rate: real production cost usually runs higher once you add a language model, a voice provider, and telephony minutes.

On capabilities, Azure AI Speech (STT) covers language auto-detection, word-level timestamps, custom vocabulary / keyterm boosting, speech translation, soc 2 type ii, and gdpr / eu data residency, and does not offer entity detection, sentiment analysis, and summarization endpoint. Each of those is verified against Azure AI Speech (STT)'s own docs or dashboard, not marketing copy.

For compliance, with Azure AI Speech (STT): SOC 2 Type II is in place. If you are in a regulated space, confirm the current posture with Azure AI Speech (STT) before you commit, since these change plan by plan.

Among the 43 speech-to-text tools in our matrix, Azure AI Speech (STT) leads with the 1st-widest language coverage; the fact sheet below has the raw numbers behind that placement.

Since we started tracking Azure AI Speech (STT), 1 verified fact change has landed in its record - the "What changed recently" section below has the specifics.

In total we track 29 verified facts for Azure AI Speech (STT) today, each linking the primary source it came from so you can check our work - and vendor claims we have not measured ourselves are labeled as such on the Azure AI Speech (STT) fact sheet below.

Reviewed by vsref Editorialfacts verified Jul 24, 2026Methodology →

Fact sheet

Pricing
Pricing facts
Batch price per audio minute0.003 $/audio-minJul 20
Streaming price per audio minute0.017 $/audio-minJul 20
Pricing modelusageJul 20
Cheapest paid plan$1,600Jul 20
Free tier quota5 audio hours/mo realtime (F0), shared standard+customJul 20
Published volume discountsCommitment tiers: 2K hrs $1,600/mo to 100K hrs $40,000/moJul 20
Concurrency on base plan100 concurrent requests (S0 default, adjustable)Jul 20
Extra concurrency costNo charge; higher limits via support requestJul 20
Capabilities
Capabilities facts
WER (third-party benchmark)3.69 % WERJul 20
Languages supported148 localesJul 20
Language auto-detection✓ YesJul 20
Speaker diarization✓ IncludedJul 20
Diarization add-on price per minutenullJul 24
PII redaction✗ Not availableJul 20
Word-level timestamps✓ YesJul 20
Custom vocabulary / keyterm boosting✓ YesJul 20
Entity detection✗ NoJul 20
Sentiment analysis✗ NoJul 20
Summarization endpoint✗ NoJul 20
Speech translation✓ YesJul 20
Priced audio-intelligence add-onsRealtime diarization/lang ID $0.30/hr; translation $2.50/hrJul 20
Compliance & trust
Compliance & trust facts
HIPAA BAA available✓ IncludedJul 20
SOC 2 Type II✓ YesJul 20
GDPR / EU data residency✓ YesJul 20
Self-host / on-prem option✓ YesJul 20
Build experience
Build experience facts
Official SDKsC#, C++, Go, Java, JavaScript, Objective-C, Swift, PythonJul 20
Max file size / durationBatch 1 GB/file; fast <500 MB and <5 hr/fileJul 20
Supported audio formatsWAV, MP3, OGG/OPUS, FLAC, WMA, AAC, AMR, WebM, SPEEXJul 20
Websocket streaming API✓ YesJul 20

Considering a switch? Best Azure AI Speech (STT) alternatives →

Azure AI Speech (STT) head-to-head

Azure AI Speech (STT) vs Google Cloud Speech-to-Text →won 4 · lost 0 · tied 3
Call CenterswonDeveloperswonDictationtieMedicaltieMeetingswonSelf-HostedtieVoice Agentswon
Azure AI Speech (STT) vs Deepgram →won 1 · lost 2 · tied 3
DeveloperswonDictationtieMedicallostMeetingstieSelf-HostedtieVoice Agentslost

What changed recently

Jul 24, 2026Azure AI Speech (STT)Diarization add-on price per minute: 0.005 → n/a