Deepgram Flux English vs Google Chirp 2
Accuracy and speed
Left gets fewer words wrong. Lower has the final text ready sooner.
- Flux English3.90% · 108ms
- Chirp 22.59% · 568ms
Deepgram Flux English is ahead on time to first text and final-text delay, and Google Chirp 2 on both datasets together and the Pipecat Dataset. The Ocular Dataset is too close to call. Google Chirp 2 has a newer release: Deepgram Flux English vs Google Chirp 3.
Last updated Methodology by Dileep Chagam
Who is better at what
- Overall WER4.00%3.01%
- Pipecat Dataset WER3.90%2.59%
- Ocular Dataset WER4.18%3.80%
- Time to first text791ms4.50s
- Final-text delay108ms568ms
Lower is better on every measure. Too close to call means the likely ranges overlap.
Flux English vs Chirp 2 FAQ
Which is more accurate, Deepgram Flux English or Google Chirp 2?
Google Chirp 2 is more accurate on both datasets. On the 1,000 public Pipecat clips, Deepgram Flux English scores 4.00% and Google Chirp 2 3.01%, so Google Chirp 2 makes fewer errors by 0.99 points. On the eight licensed Ocular recordings, Deepgram Flux English scores 3.90% and Google Chirp 2 2.59%, so Google Chirp 2 makes fewer errors by 1.31 points. Word error rate counts incorrect, missing, and extra words, so lower is better.
Google Chirp 2 is more accurate on both datasets. On the 1,000 public Pipecat clips, Deepgram Flux English scores 4.00% and Google Chirp 2 3.01%, so Google Chirp 2 makes fewer errors by 0.99 points. On the eight licensed Ocular recordings, Deepgram Flux English scores 3.90% and Google Chirp 2 2.59%, so Google Chirp 2 makes fewer errors by 1.31 points. Word error rate counts incorrect, missing, and extra words, so lower is better.
Yes. Deepgram Flux English finishes the transcript 3.71s sooner. Deepgram Flux English has the final transcript 791ms after the speaker stops and Google Chirp 2 4.50s, at the median. Both are measured on the same 206 streamed turns.
It is a trade-off. Google Chirp 2 makes fewer errors on real conversations, while Deepgram Flux English finishes the transcript 3.71s 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 Google Chirp 2 after 3.80%, at the median.
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