Categories · Speech-to-Text & Transcription APIs

Azure AI Speech to Text vs OpenAI Speech-to-Text

Azure AI Speech to Text and OpenAI Speech-to-Text are both Speech-to-Text & Transcription APIs, compared here on pricing, compliance, capabilities, and developer experience from structured, cited data - not reviews or paid placement. Azure AI Speech to Text offers a free tier while OpenAI Speech-to-Text does not, so Azure AI Speech to Text is easier to trial before committing. Azure AI Speech to Text supports webhooks for event-driven integration; the other does not document them. For coding-agent use, Azure AI Speech to Text scores higher on agent-friendliness (65 vs 50).

Comparedby a transparent data-readiness score computed from each API's published, sourced fields. No reviews, no paid placement. How we rank.

Data last verified 2026-06-21, with every field cited on each profile.

Head-to-head, from published, cited fields (auto-generated; no paid placement)
Field	Azure AI Speech to Text	OpenAI Speech-to-Text
Starting price	$1 hour of audio	$0.003 minute
Pricing model	Usage	Usage
Free tier	✓	✗
Self-serve signup	✓	✓
SOC 2	Type II	Type II
HIPAA	✓	✓
GDPR	✓	✓
Webhooks	✓	✗
Sandbox	✗	✗
Documented actions	13	11

Full data and citations: Azure AI Speech to Text · OpenAI Speech-to-Text. See more Speech-to-Text & Transcription APIs.