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
replyregardless of anything else, whether what you said is true or not: blocking program execution based on the detected environment is a runtime behaviour change.
replyAgreed. And it also applies to the "I'm not a bot" checkbox on most websites. And hundreds of other things people use every day.
replyYeah 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.
replyHow 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)
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