Deepgram Flux EnglishvsDeepgram Nova-3

Compare

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)
  • Flux English3.90% · 108ms
  • Nova-33.46% · 103ms

Deepgram Flux English is ahead on time to first text, and Deepgram Nova-3 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

Flux EnglishNova-3
  • Pipecat Dataset WER3.90%3.46%
  • Ocular Dataset WER4.18%4.39%
  • Time to first text791ms1.06s
  • Final-text delay108ms103ms

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

Flux English vs Nova-3 FAQ

  • Deepgram Flux English and Deepgram Nova-3 are too close to call on accuracy. On the 1,000 public Pipecat clips, Deepgram Flux English scores 3.90% and Deepgram Nova-3 3.46%, with likely ranges of 3.53 to 4.29% and 3.16 to 3.78%. The ranges overlap, so the difference is too close to call. On the eight licensed Ocular recordings, Deepgram Flux English scores 4.18% and Deepgram Nova-3 4.39%, with likely ranges of 3.08 to 5.23% and 3.42 to 5.25%. 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. Deepgram Nova-3 finishes the transcript 5ms sooner. Deepgram Flux English has the final transcript 108ms after the speaker stops and Deepgram Nova-3 103ms, at the median. Both are measured on the same 206 streamed turns.

  • Deepgram Nova-3 finishes the transcript 5ms 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. Deepgram Flux English shows first text after 791ms and Deepgram Nova-3 after 1.06s, at the median, so Deepgram Flux English is 273ms sooner.