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AssemblyAI

Speech-to-text and audio intelligence API for developers.

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What we love

  • Best-in-class accuracy (Universal-2)
  • Built-in audio intelligence (sentiment, topics, redaction)
  • Generous free tier

What to watch

  • Pricier than Whisper-based alternatives
  • Streaming has latency floor

Best for

Teams building transcription, meeting summarizers, or voice analytics.

Key features

  • Universal-2 transcription model
  • Speaker diarization
  • Sentiment + topic detection
  • PII redaction
  • LeMUR LLM over audio

What is AssemblyAI?

AssemblyAI provides best-in-class speech recognition, speaker diarization, sentiment, and LLM-powered audio analysis via a single API. Used by Spotify, CallRail, Veed.

Who is it for?

AssemblyAI is a great fit for teams looking for a ai & machine learning tool that fits the paid tier. It's especially loved by AI engineers, product teams, and founders shipping AI features.

Key tags

Speech AIAudio APITranscription

How it compares

We curate AssemblyAI among the top AI & Machine Learning tools on saas.fyi. Browse all AI & Machine Learning tools to compare alternatives, or use the directory's search and filters to find a closer fit.

Pricing

$0.12/hour transcription. Pricing tier: Paid. Always confirm current pricing on the official site — SaaS pricing changes frequently.

Quick facts

  • Category: AI & Machine Learning
  • Pricing: Paid — $0.12/hour transcription
  • Website: assemblyai.com
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