“Ox Alpha,” an anonymous “stealth” model that appeared on OpenRouter earlier today (August 20, 2026).
It’s a reasoning model positioned for coding, sustained agentic work, and production use, with a 1,048,576-token context window, a 131,072-token output cap, and text/image/video input — listed as stealth/ox-alpha on OpenRouter.
It’s free during this preview window, with the operator claiming near-unlimited rate limits and 100 trillion tokens/day of serving capacity.
There is some buzz on Twitter that it is frontier or even better at coding.
See also: https://manifold.markets/Sketchy/what-will-the-release-name-of-ox-al?r=U2tldGNoeQ
Frequently asked questions
What are the current odds for Who is behind OX Alpha, the mysterious new frontier LLM on OpenRouter??
Manifold Markets prices Z.ai / Zhipu AI (GLM company) at 74% as of August 21, 2026.
When does Who is behind OX Alpha, the mysterious new frontier LLM on OpenRouter? resolve?
Who is behind OX Alpha, the mysterious new frontier LLM on OpenRouter? is scheduled to resolve on August 28, 2026.
How is Who is behind OX Alpha, the mysterious new frontier LLM on OpenRouter? settled?
Manifold Markets settles this market as follows: “Ox Alpha,” an anonymous “stealth” model that appeared on OpenRouter earlier today (August 20, 2026).