The longest thread

The longest known thread, on 4chan, totaled 103,581 replies and was the /pol/ sticky for the 2020 Presidential Election Results.

= Bibliography and methodology = 4plebs.org provides a "largest threads" query under a /statistics/ API endpoint. The /statistics/ endpoint is an original extension to the FoolFuuka API (no other archive websites have it or equivalent feature,) so the boards which 4plebs archives are the only 4chan boards for which the longest thread is known as of September 2022.