[usef-]

The article on HN only said that they seemed to be collecting this to detect resellers. How else did the behavior change?

Most services I know that are trying to block abuse do collect device info

[wongarsu]

There is this whole thing where Fable silently starts behaving worse if they suspect you are trying to use it for RL or are otherwise building a competing product. This is likely the primary vector how that works: they check if you are in china, if you proxy your requests, and if you are from a list of known labs or match a couple keywords

[usef-]

They walked back that policy on the first day after pushback. They were upfront in the model launch that they designed it that way, it wasn't secret.

[dijit]

regardless of anything else, whether what you said is true or not: blocking program execution based on the detected environment is a runtime behaviour change.

[usef-]

Agreed. And it also applies to the "I'm not a bot" checkbox on most websites. And hundreds of other things people use every day.

[stingraycharles]

Yeah I also believe it’s a big nothing burger. There are far worse things these AI labs have done, detecting when Chinese labs are using Claude Code is not it.

[overfeed]

How do you know simple detection was the most Anthropic did and nothing more actively nefarious? The self-reposrted motivation was animus against "distillation attacks", which suggests active server-side countermeasures that could range from the overt (IP or user account bans) to covert (downgrading model performance or poisoning the response)