Cartesia Ink 2 vs Fish Audio Transcribe Stream 1

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Accuracy and speed

Left gets fewer words wrong. Lower has the final text ready sooner.

Accurate and fast0ms200ms400ms600ms800ms0%2%4%6%8%Words wrong on clean audio (Pipecat WER)
  • Ink 22.39% · 123ms
  • Transcribe Stream 11.90% · 123ms

Fish Audio Transcribe Stream 1 is ahead of Cartesia Ink 2 on both datasets together and time to first text. The two tie on final-text delay. The Pipecat Dataset and The Ocular Dataset are too close to call.

Last updated Methodology by Dileep Chagam

Who is better at what

Ink 2Transcribe Stream 1
  • Overall WER2.63%2.21%
  • Pipecat Dataset WER2.39%1.90%
  • Ocular Dataset WER3.09%2.78%
  • Time to first text1.51s730ms
  • Final-text delay123ms123ms

Lower is better on every measure. Too close to call means the likely ranges overlap. For its voices, see our notes on Cartesia text to speech.

Ink 2 vs Transcribe Stream 1 FAQ

  • Fish Audio Transcribe Stream 1 is more accurate on the public clips. On the 1,000 public Pipecat clips, Cartesia Ink 2 scores 2.63% and Fish Audio Transcribe Stream 1 2.21%, so Fish Audio Transcribe Stream 1 makes fewer errors by 0.42 points. On the eight licensed Ocular recordings, Cartesia Ink 2 scores 2.39% and Fish Audio Transcribe Stream 1 1.90%, with likely ranges of 2.13 to 2.65% and 1.68 to 2.14%. The ranges overlap, so the difference is too close to call. Word error rate counts incorrect, missing, and extra words, so lower is better.

  • No. Fish Audio Transcribe Stream 1 finishes the transcript 781ms sooner. Cartesia Ink 2 has the final transcript 1.51s after the speaker stops and Fish Audio Transcribe Stream 1 730ms, at the median. Both are measured on the same 206 streamed turns.

  • Fish Audio Transcribe Stream 1 finishes the transcript 781ms sooner, and the two are too close to call on real conversations. A voice agent cannot reply until the final transcript arrives, and the Ocular recordings are real conversations.

  • Yes, both return partial text before the speaker stops. Cartesia Ink 2 shows first text after 3.09% and Fish Audio Transcribe Stream 1 after 2.78%, at the median.

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