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Best CMU Sphinx Alternatives in 2026

12 platforms from speech recognition software ranked against CMU Sphinx on the same published basis.

  1. 1
    AssemblyAI Free plan apiself-hostedWeb $0.15/mo7.4
    CMU Sphinx vs AssemblyAI
  2. 2
    Google Cloud Speech-to-Text Free plan apiself-hostedWeb $0.02/mo7.4
    CMU Sphinx vs Google Cloud Speech-to-Text
  3. 3
    Amazon Transcribe Free plan apiWeb $0.01/mo7.3
    CMU Sphinx vs Amazon Transcribe
  4. 4
    Rev AI Free plan api $0.01/mo7.3
    CMU Sphinx vs Rev AI
  5. 5
    Speechmatics Free plan apiLinuxMacself-hostedWeb Free7.3
    CMU Sphinx vs Speechmatics
  6. 6
    Soniox Free plan api $19.99/mo7.1
    CMU Sphinx vs Soniox
  7. 7
    Yandex SpeechKit apiWeb 6.9
    CMU Sphinx vs Yandex SpeechKit
  8. 8
    ESPnet apiLinuxMacWin 6.6
    CMU Sphinx vs ESPnet
  9. 9
    Gladia api $0.20/mo6.6
    CMU Sphinx vs Gladia
  10. 10
    Vosk api 6.5
    CMU Sphinx vs Vosk
  11. 11
    Trint api 6.4
    CMU Sphinx vs Trint
  12. 12
    Picovoice Leopard api 6.3
    CMU Sphinx vs Picovoice Leopard
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