AssemblyAI

AssemblyAI

Verified

AI speech recognition and audio intelligence API for developers.

About AssemblyAI

"The audio AI platform developers love"

AssemblyAI is a speech AI platform offering industry-leading APIs for speech transcription, audio intelligence, and audio understanding. Its Universal-2 model delivers state-of-the-art accuracy with support for 99 languages, while its audio intelligence layer adds automatic chapters, sentiment analysis, entity detection, PII redaction, and content safety filtering. Developers building voice AI applications, conversation intelligence platforms, and meeting analytics tools choose AssemblyAI for its best-in-class accuracy, comprehensive audio AI features, and developer-friendly documentation that enables production deployment in hours.

Key Features

  • High-accuracy speech-to-text API
  • Speaker diarization
  • Content moderation
  • Auto chapters and summaries
  • Entity detection
  • LeMUR for LLM audio tasks

Best For

Transcribing audio contentBuilding voice-enabled applicationsModerating audio contentCreating AI-powered audio analysis

Official Links

Tool Details

Pricing
Freemium
Free plan available
Verified Tool
Reviewed by our team
Last verified
Feb 18, 2026
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