Deepgram Flux English vs Reson8 Rumble-2
Accuracy and speed
Left gets fewer words wrong. Lower has the final text ready sooner.
- Flux English3.90% · 108ms
- Rumble-21.69% · 18ms
Reson8 Rumble-2 is ahead of Deepgram Flux English 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
- Overall WER4.00%2.05%
- Pipecat Dataset WER3.90%1.69%
- Ocular Dataset WER4.18%2.75%
- Time to first text791ms486ms
- Final-text delay108ms18ms
Lower is better on every measure. Too close to call means the likely ranges overlap.
Flux English vs Rumble-2 FAQ
Which is more accurate, Deepgram Flux English or Reson8 Rumble-2?
Reson8 Rumble-2 is more accurate on both datasets. On the 1,000 public Pipecat clips, Deepgram Flux English scores 4.00% and Reson8 Rumble-2 2.05%, so Reson8 Rumble-2 makes fewer errors by 1.94 points. On the 300 licensed Ocular turns, Deepgram Flux English scores 3.90% and Reson8 Rumble-2 1.69%, so Reson8 Rumble-2 makes fewer errors by 2.21 points. Word error rate counts incorrect, missing, and extra words, so lower is better.
Reson8 Rumble-2 is more accurate on both datasets. On the 1,000 public Pipecat clips, Deepgram Flux English scores 4.00% and Reson8 Rumble-2 2.05%, so Reson8 Rumble-2 makes fewer errors by 1.94 points. On the 300 licensed Ocular turns, Deepgram Flux English scores 3.90% and Reson8 Rumble-2 1.69%, so Reson8 Rumble-2 makes fewer errors by 2.21 points. Word error rate counts incorrect, missing, and extra words, so lower is better.
No. Reson8 Rumble-2 finishes the transcript 305ms sooner. Deepgram Flux English has the final transcript 791ms after the speaker stops and Reson8 Rumble-2 486ms, at the median. Both are measured on the same 206 streamed turns.
Reson8 Rumble-2 is the stronger pick for voice agents: it makes fewer errors on real conversations and finishes the transcript 305ms 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. Deepgram Flux English shows first text after 4.18% and Reson8 Rumble-2 after 2.75%, at the median.
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