NVIDIA Nemotron 3.5 Transcribe vs Reson8 Rumble-2

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Accuracy and speed

Left gets fewer words wrong. Lower has the final text ready sooner. Nemotron 3.5 Transcribe doesn't support streaming, so it is not shown.

Accurate and fast0ms200ms400ms600ms800ms0%2%4%6%8%Words wrong on clean audio (Pipecat WER)
  • Nemotron 3.5 Transcribe1.89%
  • Rumble-21.69% · 18ms

Reson8 Rumble-2 is ahead of NVIDIA Nemotron 3.5 Transcribe on both datasets together. The Pipecat Dataset and The Ocular Dataset are too close to call.

Last updated Methodology by Dileep Chagam

Who is better at what

Nemotron 3.5 TranscribeRumble-2
  • Overall WER2.28%2.05%
  • Pipecat Dataset WER1.89%1.69%
  • Ocular Dataset WER3.03%2.75%
  • Time to first textn/a486ms
  • Final-text delayn/a18ms

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

Nemotron 3.5 Transcribe vs Rumble-2 FAQ

  • Reson8 Rumble-2 is more accurate on the public clips. On the 1,000 public Pipecat clips, NVIDIA Nemotron 3.5 Transcribe scores 2.28% and Reson8 Rumble-2 2.05%, so Reson8 Rumble-2 makes fewer errors by 0.23 points. On the 300 licensed Ocular turns, NVIDIA Nemotron 3.5 Transcribe scores 1.89% and Reson8 Rumble-2 1.69%, with likely ranges of 1.63 to 2.17% 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.

  • They cannot be compared on speed. NVIDIA Nemotron 3.5 Transcribe was tested on whole recordings rather than a live stream, so its speed is not measured.

  • The two are too close to call on real conversations. NVIDIA Nemotron 3.5 Transcribe was tested on whole recordings rather than a live stream, so its speed is not measured. A voice agent cannot reply until the final transcript arrives, and the Ocular recordings are real conversations.

  • NVIDIA Nemotron 3.5 Transcribe was tested on whole recordings rather than a live stream, so whether it streams partial text was not measured. Reson8 Rumble-2 returns partial text before the speaker stops.

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