I still use Akismet with Anti-Spam. Until Akismet was recently updated, it hardly stopped anything — single or low double digit figures — and Anti-Spam was doing all the work by stopping 100k+ spam comments per month. Now since November Akismet is suddenly catching over a hundred spam comments each month. Anti-Spam still does most of the work, but Akismet is doing more than it used to. Any idea why that is?
How do these plugins play together? My understanding is that Anti-Spam acts first, and then Akismet. If that is correct, then Anti-Spam is doing worse now and/or Akismet is doing better.
This is on a site with around 100k visits/month. Previously when only Akismet was used, it would catch 100-150k spam comments/month. When I added Anti-Spam, this number fell to 10-25 spam comments/month. In November it shot up to 106 and is currently at 120 for December.