Google Chirp 3vsGPT-4o Mini Transcribe
Accuracy and speed
Left gets fewer words wrong. Lower has the final text ready sooner.
- Chirp 32.00% · 475ms
- 4o Mini Transcribe3.35% · 630ms
Google Chirp 3 is ahead of GPT-4o Mini Transcribe on the Pipecat Dataset and final-text delay. The Ocular Dataset is too close to call.
Last updated Methodology by Dileep Chagam
Who is better at what
- Pipecat Dataset WER2.00%3.35%
- Ocular Dataset WER4.19%4.45%
- Time to first text4.48sn/a
- Final-text delay475ms630ms
Lower is better on every measure. Too close to call means the likely ranges overlap.
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Chirp 3 vs 4o Mini Transcribe FAQ
Which is more accurate, Google Chirp 3 or GPT-4o Mini Transcribe?
Google Chirp 3 is more accurate on the public clips. On the 1,000 public Pipecat clips, Google Chirp 3 scores 2.00% and GPT-4o Mini Transcribe 3.35%, so Google Chirp 3 makes fewer errors by 1.35 points. On the eight licensed Ocular recordings, Google Chirp 3 scores 4.19% and GPT-4o Mini Transcribe 4.45%, with likely ranges of 2.97 to 5.27% and 3.22 to 5.55%. 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 2.00% and GPT-4o Mini Transcribe 3.35%, so Google Chirp 3 makes fewer errors by 1.35 points. On the eight licensed Ocular recordings, Google Chirp 3 scores 4.19% and GPT-4o Mini Transcribe 4.45%, with likely ranges of 2.97 to 5.27% and 3.22 to 5.55%. The ranges overlap, so the difference is too close to call. Word error rate counts incorrect, missing, and extra words, so lower is better.
Yes. Google Chirp 3 finishes the transcript 155ms sooner. Google Chirp 3 has the final transcript 475ms after the speaker stops and GPT-4o Mini Transcribe 630ms, at the median. Both are measured on the same 206 streamed turns.
Google Chirp 3 finishes the transcript 155ms 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.
Only Google Chirp 3. GPT-4o Mini Transcribe returns no text until the speaker stops, which matters if your agent reacts to partial transcripts.