AI Model Ox Alpha Is Free, Beats Claude Fable, and Nobody Knows Who Built It
In brief Ox Alpha, a free "stealth model," launched August 20 on OpenRouter, OpenCode, Cline, and Nous Research's portal+. A viral claim that Ox Alpha beats Claude Fable 5 and GPT-5.6 Sol on DeepSWE came from a 10-task sample; two separate full 113-task runs landed near 63%, roughly level with GPT-5.6 Sol.
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Key Facts
- Fact 1: In brief Ox Alpha, a free "stealth model," launched August 20 on OpenRouter, OpenCode, Cline, and Nous Research's portal+.
- Fact 2: A viral claim that Ox Alpha beats Claude Fable 5 and GPT-5.6 Sol on DeepSWE came from a 10-task sample; two separate full 113-task runs landed near 63%, roughly level with GPT-5.6 Sol.
- Fact 3: Google, Xiaomi, DeepSeek, and Microsoft's MAI were all floated as the model behind it; but the most popular theory points to Zhipu AI's GLM-5.3 family.
- Fact 4: AI enthusiasts are getting very excited about an AI model called Ox Alpha, which appeared on OpenRouter on August 20 with no company name attached.
In brief Ox Alpha, a free "stealth model," launched August 20 on OpenRouter, OpenCode, Cline, and Nous Research's portal+. A viral claim that Ox Alpha beats Claude Fable 5 and GPT-5.6 Sol on DeepSWE came from a 10-task sample; two separate full 113-task runs landed near 63%, roughly level with GPT-5.6 Sol.
Google, Xiaomi, DeepSeek, and Microsoft's MAI were all floated as the model behind it; but the most popular theory points to Zhipu AI's GLM-5.3 family. AI enthusiasts are getting very excited about an AI model called Ox Alpha, which appeared on OpenRouter on August 20 with no company name attached. The listing describes it as "a reasoning model designed for coding, sustained agentic work, and production workloads," built by a third-party provider that has chosen to stay anonymous during the preview.
(Original synthesis pending human/AI review — generated by the stub provider by selecting real sentences from the source material, not by writing new analysis or commentary.)
Original source: Decrypt
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