There were a record 23,418 more Covid-19 cases, and 184 deaths, over the past 24 hours, the Public Health Ministry reported on Friday morning.
There were 23,030 cases in the general population and 388 among prison inmates.
Over the previous 24 hours, 20,083 Covid-19 patients were discharged from hospitals.
Since April 1, around when the third wave of Covid-19 began, there have been 834,326 Covid-19 patients, 616,458 of whom have recovered.
Since the pandemic started early last year, there have been 863,189 Covid-19 cases, 643,884 of whom recovered.
The death toll was at 6,848 in the third wave and 6,942 from the beginning of the pandemic early last year.
The previous high of daily Covid-19 cases was 22,782 reported on Thursday. The record high for daily fatalities is 235 on Tuesday.
The Centre for Covid-19 Situation Administration said that Bangkok again had the largest number of daily fatalities, 71, followed Samut Sakhon with 16 and Samut Prakan with 12. The rest were reported in 27 other provinces.
The capital also led with new infections, 5,140 cases, followed by Samut Prakan (1,936), Samut Sakhon (1,847) and Chon Buri (1,408).
There were nine new cases from overseas - three each from Myanmar and Malaysia, two from the United Arab Emirates and one from Iraq.
