A big reason we invest in this is because we want to keep free and logged-out access available for more users. My team’s goal is to help make sure the limited GPU resources are going to real users.
We also keep a very close eye on the user impact. We monitor things like page load time, time to first token and payload size, with a focus on reducing the overhead of these protections. For the majority of people, the impact is negligible, and only a very small percentage may see a slight delay from extra checks. We also continuously evaluate precision so we can minimize false positives while still making abuse meaningfully harder.