OpenRouter lists Ox Alpha under a generic "Stealth" provider, and OpenCode separately offers direct access with claims of near-unlimited usage and 100 trillion tokens/day of serving capacity. Independent tokenizer and video-encoder fingerprinting — matching Ox Alpha's token counts and encoder behavior against known models across dozens of controlled tests — points to a hidden variant of Zhipu AI's GLM-5.3 with roughly 90% confidence, ruling out rival theories like Xiaomi's MiMo v2.5 and Qwen 3.8 Max. Despite the strength of that evidence, no lab or platform has officially confirmed the model's identity. The name is sometimes miswritten as "0x Alpha" (zero-x); the official model ID is stealth/ox-alpha.