Ox Alpha: A mysterious new AI model that beats frontier rivals

Ox Alpha – A mysterious new AI model

Ox Alpha is a stealth reasoning model that appeared out of nowhere in August 2026. It offers a 1M-token context window, 131K max output tokens, and supports text, image, and video inputs. The model excels at long-horizon coding and complex reasoning, with visible thinking and tool calling. On an independent benchmark of 10 real-world coding tasks, Ox Alpha solved 8, outperforming Fable 5, GLM-5, GPT-5, and Grok 4. The site oxalpha.com provides free, no-login access, claiming no conversations are stored on their servers. The model's creators remain unknown.