Google Chirp 3 vs Speechmatics Linden
Accuracy and speed
Left gets fewer words wrong. Lower has the final text ready sooner.
- Chirp 32.00% · 475ms
- Linden2.46% · 147ms
Speechmatics Linden is ahead on time to first text and final-text delay, and Google Chirp 3 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
- Overall WER2.76%2.97%
- Pipecat Dataset WER2.00%2.46%
- Ocular Dataset WER4.19%3.93%
- Time to first text4.48s1.19s
- Final-text delay475ms147ms
Lower is better on every measure. Too close to call means the likely ranges overlap. For the wider field, see our pick of the best voice AI APIs for real-time audio.
Chirp 3 vs Linden FAQ
Which is more accurate, Google Chirp 3 or Speechmatics Linden?
Google Chirp 3 is more accurate on the public clips. On the 1,000 public Pipecat clips, Google Chirp 3 scores 2.76% and Speechmatics Linden 2.97%, so Google Chirp 3 makes fewer errors by 0.21 points. On the eight licensed Ocular recordings, Google Chirp 3 scores 2.00% and Speechmatics Linden 2.46%, with likely ranges of 1.77 to 2.25% and 2.19 to 2.73%. The ranges overlap, so the difference is too close to call. Word error rate counts incorrect, missing, and extra words, so lower is better.
Google Chirp 3 is more accurate on the public clips. On the 1,000 public Pipecat clips, Google Chirp 3 scores 2.76% and Speechmatics Linden 2.97%, so Google Chirp 3 makes fewer errors by 0.21 points. On the eight licensed Ocular recordings, Google Chirp 3 scores 2.00% and Speechmatics Linden 2.46%, with likely ranges of 1.77 to 2.25% and 2.19 to 2.73%. 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. Speechmatics Linden finishes the transcript 3.29s sooner. Google Chirp 3 has the final transcript 4.48s after the speaker stops and Speechmatics Linden 1.19s, at the median. Both are measured on the same 206 streamed turns.
Speechmatics Linden finishes the transcript 3.29s 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. Google Chirp 3 shows first text after 4.19% and Speechmatics Linden after 3.93%, at the median.
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