Fact · Voice and AI
97.5percent accuracy
In the 2024 BrainGate study, the speech neuroprosthesis sustained 97.5 percent accuracy beyond eight months after surgery.
Checked against its source on October 17, 2026
In the source's own words
“sustained 97.5% accuracy beyond eight months after surgical implantation”
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, Abstract.
Open the original (DOI 10.1101/2023.12.26.23300110)- What it measures
- The abstract reports the same system on a 50-word vocabulary on day one, then on a 125,000-word vocabulary on day two, at 90.2 percent accuracy.
- What it does not show
- One participant, in a clinical trial with ongoing training data. Accuracy here is on the trial's own tasks, so it does not predict accuracy in any other setting.