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Best CMU Sphinx Alternatives in 2026

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

  1. 1
    Notta Free plan AndroidextensioniOSMacWeb $8.17/mo7.4
    CMU Sphinx vs Notta
  2. 2
    Superwhisper Free plan AndroidiOSMacWin $7.08/mo7.3
    CMU Sphinx vs Superwhisper
  3. 3
    Speechmatics Free plan apiLinuxMacself-hostedWeb Free7.2
    CMU Sphinx vs Speechmatics
  4. 4
    AssemblyAI Free plan apiself-hostedWeb $0.15/mo7.0
    CMU Sphinx vs AssemblyAI
  5. 5
    Google Cloud Speech-to-Text Free plan apiself-hostedWeb $0.02/mo6.9
    CMU Sphinx vs Google Cloud Speech-to-Text
  6. 6
    Amazon Transcribe Free plan apiWeb $0.01/mo6.8
    CMU Sphinx vs Amazon Transcribe
  7. 7
    Otter.ai AndroidextensioniOSMacWin 6.8
    CMU Sphinx vs Otter.ai
  8. 8
    Voice In Free plan LinuxMacWin 6.8
    CMU Sphinx vs Voice In
  9. 9
    Rev AI Free plan api $0.01/mo6.7
    CMU Sphinx vs Rev AI
  10. 10
    MacWhisper Free plan iOSMac €64/mo6.6
    CMU Sphinx vs MacWhisper
  11. 11
    Soniox Free plan api $19.99/mo6.5
    CMU Sphinx vs Soniox
  12. 12
    sherpa AndroidiOSLinuxMacWeb 6.3
    CMU Sphinx vs sherpa
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