Anonymous 'Ox Alpha' Model Lands on OpenRouter and the Viral 80% Coding Score Falls to 58.4% on the Full Run

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A stealth model called Ox Alpha appeared free on OpenRouter and OpenCode on August 20, 2026 with a 1,048,576-token context window, 131,072-token max output, and text, image, and video input, billed as built for coding and sustained agentic work. TechCrunch reported August 23 that Stripe CEO Patrick Collison called it 'very impressive' and that no lab has claimed it, with speculation split between Z.ai's GLM family, Microsoft's MAI, and Xiaomi's MiMo. The widely shared 80% DeepSWE score came from 8 hand-picked tasks; the completed 113-task run resolved 58.4%. Stripe is acquiring OpenRouter, which makes the free-preview distribution channel worth watching on its own.