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Fact · Voice and AI

31.6words per minute

In a 2024 BrainGate study, one participant's copy task was decoded at his self-paced speaking rate of 31.6 words per minute.

Checked against its source on October 17, 2026

In the source's own words

“at the participant’s self-paced speaking rate of 31.6 words per minute”

An accurate and rapidly calibrating speech neuroprosthesis, Nicholas S. Card et al., medRxiv preprint, deposited in PubMed Central (later published in the New England Journal of Medicine, 2024), 2024, Results, copy task in the final five evaluation sessions.

Open the original (DOI 10.1101/2023.12.26.23300110)
What it measures
In a copy task, the participant attempted to say sentences shown on a screen, and the system decoded them into text. The figure comes from the final five evaluation sessions of the study.
What it does not show
A copy task with prompted sentences, not free conversation, and one participant. It is the speed of the decoded output, not of a typist.

Source

Copy-task speed of a 2024 speech BCI: 31.6 words per minute | Yap