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Whisper

OpenAI's open-source speech-to-text

Voice Free (OSS) or $0.006/min API
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What It Is

Whisper is OpenAI's open-source multilingual speech recognition model. Runs locally on CPU/GPU or via OpenAI's hosted API. The whisper-large-v3 model is remarkably accurate across 99 languages and multiple accents.

Strengths & Weaknesses

✓ Strengths

  • Open source
  • Multilingual (99 languages)
  • Strong accuracy

× Weaknesses

  • Slow on CPU
  • No real-time streaming stock
  • Memory hungry at large sizes

Best Use Cases

Self-hosted transcriptionBatch processingMultilingual apps

Alternatives

Deepgram
Fast, accurate speech-to-text
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