You've probably hit this before — yesterday the AI felt sharp, fixed your bug without you even asking, and threw in a few extra cleanups along the way. Then today, same kind of problem, and suddenly it refuses to touch anything you didn't explicitly point at, or starts going in circles. And you start wondering "wait, is AI getting quietly dumber?"

A lot of people have this feeling but it's hard to pin down. Is the provider messing with the model? Is today's problem genuinely harder? Or is it all in your head? Without a number to point at, it just stays an urban legend.

So this post is about a site called AIStupidLevel — the name pretty much spells it out. It runs round-the-clock tests against the major AI models and turns "is AI getting dumber" into an actual curve you can look at.

Why would an AI "get dumber" in the first place?

A reasonable pushback: doesn't the model get trained once and then frozen? A few things are actually going on behind the scenes: