Unclecode (Hossein) on X: "i fingerprinted this "union alpha" which turned out it is (unbiased/pareto) for 15 times in 100 minutes: 02:05-02:34 UTC: a fingerprint matching hermes-4-405b in my library, 4 of 4 probes. 02:37: every probe value changes at once. new model. 02:40-03:46: a signature matching nothing i have measured. unknown model. and in 10 of the 15 runs, the same text sent twice, seconds apart, was billed with two different token counts. people spent the stealth week arguing whether it was openai, llama, qwen or glm. everyone was right. they were fingerprinting different models behind one name. Not only for mystery models. Your daily OpenAI or Gemini API deserves the same check. https://t.co/xUVrAPperB"

Unclecode (Hossein)

@unclecode

i fingerprinted this "union alpha" which turned out it is (unbiased/pareto) for 15 times in 100 minutes: 02:05-02:34 UTC: a fingerprint matching hermes-4-405b in my library, 4 of 4 probes. 02:37: every probe value changes at once. new model. 02:40-03:46: a signature matching nothing i have measured. unknown model. and in 10 of the 15 runs, the same text sent twice, seconds apart, was billed with two different token counts. people spent the stealth week arguing whether it was openai, llama, qwen or glm. everyone was right. they were fingerprinting different models behind one name. Not only for mystery models. Your daily OpenAI or Gemini API deserves the same check. modelprint.ai

OpenRouter

@OpenRouter

Sep 17

Union Alpha is revealed on OpenRouter as @TheUnbiasedCo Pareto! Impressive detective work and demand from the community cut this stealth period short, but you can continue using it now: openrouter.ai/unbiased/pareto

1:06 PM · Sep 18, 2026·

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