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AssemblyAI

  • Freemium
  • Cloud

Verified Sep 2026

Speech-to-text and audio intelligence

Production transcription API with chapters, sentiment and PII redaction: batch and real-time.

The speech AI platform: transcription with diarization/sentiment, plus LeMUR for LLMs over audio. The developer-grade STT API.

Who it's for

Developers who want production-grade speech-to-text with speaker labels and audio intelligence.

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