From the Ars Technica article: >the participant was able to produce about 90 characters per minute, easily topping the previous record for implant-driven typin

From the Ars Technica article: >the participant was able to produce about 90 characters per minute, easily topping the previous record for implant-driven typing, which was about 25 characters per minute. So it appears to enable typing at > 3x the speed of previous efforts. At least for this one particular person.