I fingerprinted Ox Alpha: same tokenizer as GLM-5.3 (+75 token offset), z.ai's exact error strings, near-identical temp-0 outputs
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Ran three black-box fingerprint tests on stealth/ox-alpha (OpenRouter + OpenCode) vs public GLM-5.3 on z.ai. 1. Tokenizer: I sent 6 texts (EN/DE/CN/code/emoji) and compared prompt_tokens. Ox Alpha = GLM-5.3 exactly +75 on every text . Same tokenizer, constant 75-token hidden system prompt. Kimi/Qwe…
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