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Speech Understanding API

Speech and audio models · by AssemblyAI

Extract structured insights from speech without building custom NLP pipelines.

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What it does

Extract structured insights from speech without building custom NLP pipelines. Includes speaker diarization, audio events, sentiment analysis, entity detection, topic detection, and translation.

  • Voice Agents
  • AI Notetakers
  • Call Analytics
  • Medical Transcription
  • Dictation
  • Agent Assist
  • AI Scribes
Category
Speech and audio models
Users
Enterprise, Developers
Public API
Available

Not yet disclosed: deployment options, platforms, languages and support channels.

Pricing

  • Free plan$0

Free trial on paid plans

Prices as published by AssemblyAI, checked Oct 2026.

Security and compliance

As reported by AssemblyAI. Ask for audit reports before you buy.

  • HIPAACompliant
  • PII Redaction
  • Profanity Filtering
  • Content Moderation
  • HIPAA-Eligible (Medical Mode on Pre-recorded and Realtime STT with BAA)

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