Smallest Pulse vs Speechmatics Linden
Accuracy and speed
Left gets fewer words wrong. Lower has the final text ready sooner.
- Pulse3.66% · 201ms
- Linden2.46% · 147ms
Speechmatics Linden is ahead on both datasets together, the Pipecat Dataset and final-text delay, and Smallest Pulse on time to first text. The Ocular Dataset is too close to call.
Last updated Methodology by Dileep Chagam
Who is better at what
- Overall WER3.59%2.97%
- Pipecat Dataset WER3.66%2.46%
- Ocular Dataset WER3.46%3.93%
- Time to first text1.06s1.19s
- Final-text delay201ms147ms
Lower is better on every measure. Too close to call means the likely ranges overlap. Our guide explains how word error rate is measured.
Pulse vs Linden FAQ
Which is more accurate, Smallest Pulse or Speechmatics Linden?
Speechmatics Linden is more accurate on both datasets. On the 1,000 public Pipecat clips, Smallest Pulse scores 3.59% and Speechmatics Linden 2.97%, so Speechmatics Linden makes fewer errors by 0.62 points. On the eight licensed Ocular recordings, Smallest Pulse scores 3.66% and Speechmatics Linden 2.46%, so Speechmatics Linden makes fewer errors by 1.20 points. Word error rate counts incorrect, missing, and extra words, so lower is better.
Speechmatics Linden is more accurate on both datasets. On the 1,000 public Pipecat clips, Smallest Pulse scores 3.59% and Speechmatics Linden 2.97%, so Speechmatics Linden makes fewer errors by 0.62 points. On the eight licensed Ocular recordings, Smallest Pulse scores 3.66% and Speechmatics Linden 2.46%, so Speechmatics Linden makes fewer errors by 1.20 points. Word error rate counts incorrect, missing, and extra words, so lower is better.
Yes. Smallest Pulse finishes the transcript 133ms sooner. Smallest Pulse has the final transcript 1.06s after the speaker stops and Speechmatics Linden 1.19s, at the median. Both are measured on the same 206 streamed turns.
It is a trade-off. Speechmatics Linden makes fewer errors on real conversations, while Smallest Pulse finishes the transcript 133ms 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. Smallest Pulse shows first text after 3.46% and Speechmatics Linden after 3.93%, at the median.
Test your voice agent the same way.
Cekura runs these simulated calls on your agent and scores every one.