Mystery solved: Chinese lab Z.ai says it’s behind the Ox Alpha model that wowed Silicon Valley
By
Thibault Spirlet
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The free AI coding model sparked widespread interest among developers after appearing anonymously on OpenRouter.
Mystery solved: Chinese lab Z.ai says it’s behind the Ox Alpha model that wowed Silicon Valley
By
Thibault Spirlet
You're currently following this author!
Want to unfollow? Unsubscribe via the link in your email.

Ox Alpha, a mysterious AI model, debuted on OpenRouter on Thursday. Its origins are unknown, though some suspect a Chinese lab.

A mysterious new AI model called Ox Alpha has driven certain corners of the internet into a frenzy of speculation.

Z.ai confirms it is behind Ox Alpha, the mysterious open AI model topping benchmarks and leaderboards, and its weights are set to…

Ox Alpha offers a roughly 1 million-token context window that can process text, image and video input, according to OpenRouter. …

The model, billed as a reasoning tool for coding and software engineering, was released Aug. 20 by an anonymous third-party…

Ox Alpha's release has led to increased fears of China swiftly overtaking Western powers like the US in the global AI race.

Mystery AI model Ox Alpha draws developers with free access