Developer Tests Mysterious AI Coding Model Ox Alpha, Finds It Gone the Next Day

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A developer tested Ox Alpha, an anonymous AI coding model that appeared on OpenRouter in August under the identifier stealth/ox-alpha, for a frontend development task. The model demonstrated unusually fast performance, quickly translating product requirements into a working UI structure and interactive interface components. Ox Alpha attracted attention for its ambitious specs, including a context window exceeding one million tokens and free pricing during its preview period, though its creator was never publicly identified. Speculation in the developer community pointed to Zhipu AI and the GLM model family as possible origins, but this was never confirmed. When the developer returned the following day, access to the model had disappeared, highlighting how dependent developers are becoming on AI tools that can vanish without warning.

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