Fish Audio Transcribe Stream 1 vs Reson8 Rumble-2

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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
  • Rumble-21.69% · 18ms

Reson8 Rumble-2 is ahead of Fish Audio Transcribe Stream 1 on both datasets together, time to first text and 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

Transcribe Stream 1Rumble-2
  • Overall WER2.21%2.05%
  • Pipecat Dataset WER1.90%1.69%
  • Ocular Dataset WER2.78%2.75%
  • Time to first text730ms486ms
  • Final-text delay123ms18ms

Lower is better on every measure. Too close to call means the likely ranges overlap.

Transcribe Stream 1 vs Rumble-2 FAQ

  • Reson8 Rumble-2 is more accurate on the public clips. On the 1,000 public Pipecat clips, Fish Audio Transcribe Stream 1 scores 2.21% and Reson8 Rumble-2 2.05%, so Reson8 Rumble-2 makes fewer errors by 0.15 points. On the 300 licensed Ocular turns, Fish Audio Transcribe Stream 1 scores 1.90% and Reson8 Rumble-2 1.69%, with likely ranges of 1.68 to 2.14% and 1.48 to 1.92%. 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. Reson8 Rumble-2 finishes the transcript 244ms sooner. Fish Audio Transcribe Stream 1 has the final transcript 730ms after the speaker stops and Reson8 Rumble-2 486ms, at the median. Both are measured on the same 206 streamed turns.

  • Reson8 Rumble-2 finishes the transcript 244ms 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. Fish Audio Transcribe Stream 1 shows first text after 2.78% and Reson8 Rumble-2 after 2.75%, at the median.

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