Fish Audio Transcribe Stream 1 vs Smallest Pulse

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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)
  • Transcribe Stream 11.90% · 123ms
  • Pulse3.66% · 201ms

Fish Audio Transcribe Stream 1 is ahead of Smallest Pulse on both datasets together, the Pipecat Dataset, time to first text and final-text delay. The Ocular Dataset is too close to call.

Last updated Methodology by Dileep Chagam

Who is better at what

Transcribe Stream 1Pulse
  • Overall WER2.21%3.59%
  • Pipecat Dataset WER1.90%3.66%
  • Ocular Dataset WER2.78%3.46%
  • Time to first text730ms1.06s
  • Final-text delay123ms201ms

Lower is better on every measure. Too close to call means the likely ranges overlap. Our guide explains how word error rate is measured.

Transcribe Stream 1 vs Pulse FAQ

  • Fish Audio Transcribe Stream 1 is more accurate on both datasets. On the 1,000 public Pipecat clips, Fish Audio Transcribe Stream 1 scores 2.21% and Smallest Pulse 3.59%, so Fish Audio Transcribe Stream 1 makes fewer errors by 1.38 points. On the eight licensed Ocular recordings, Fish Audio Transcribe Stream 1 scores 1.90% and Smallest Pulse 3.66%, so Fish Audio Transcribe Stream 1 makes fewer errors by 1.75 points. Word error rate counts incorrect, missing, and extra words, so lower is better.

  • Yes. Fish Audio Transcribe Stream 1 finishes the transcript 327ms sooner. Fish Audio Transcribe Stream 1 has the final transcript 730ms after the speaker stops and Smallest Pulse 1.06s, at the median. Both are measured on the same 206 streamed turns.

  • Fish Audio Transcribe Stream 1 is the stronger pick for voice agents: it makes fewer errors on real conversations and finishes the transcript 327ms sooner. 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. Fish Audio Transcribe Stream 1 shows first text after 2.78% and Smallest Pulse after 3.46%, at the median.

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