TLDR Tech / InfoSec
Behaviorally Fingerprinting Ox Alpha's Provenance and Censorship
CTGT researchers have used behavioral fingerprinting to link the anonymous "Ox Alpha" model on OpenRouter to Zhipu's GLM-5.x family. Despite system prompts instructing the model to conceal its identity, researchers identified matching Z.AI error codes, a 1.0 temperature ceiling, and an exact tokenizer match. The analysis also revealed a highly targeted censorship blacklist designed to evade standard foreign-interest audits. While Ox Alpha answers queries about Xinjiang and Taiwan identically to American models, it strictly blocks seven domestic legitimacy topics including the 2018 term limits removal and Xi Jinping. The model operators have not officially disclosed this information, so the attribution relies entirely on CTGT's LineageEval testing instrument.
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