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Rev.ai

Speech-to-text API from Rev with high-accuracy transcription for developers building voice features.

Pricing Pay-as-you-go from $0.02/min / Volume discounts
Category Notetakers & Recording

What makes Rev.ai different

Rev.ai combines Rev human-trained models with developer-friendly APIs. It benefits from Rev vast corpus of human-transcribed data, giving it strong accuracy on diverse accents and audio conditions. Offers both streaming and async APIs.

Follows our testing methodology
· Last reviewed April 2026

Key features

  • Streaming and async transcription APIs
  • Speaker diarization
  • Custom vocabulary
  • Topic extraction
  • Sentiment analysis

Pros and cons

Pros

  • + High accuracy from human-trained models
  • + Simple, predictable pricing
  • + Good documentation and quick start

Cons

  • - Fewer AI features than Symbl or AssemblyAI
  • - Limited real-time processing features
  • - Owned by Verizon, enterprise focus

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