One of China’s leading AI labs has claimed the cow — aka the mysterious Ox Alpha model — and Chinese fans couldn’t be happier.
In a Wednesday blog post, Z.ai said Ox Alpha had been a free-to-use preview of its new GLM-5.3-Flash model. The model had appeared on OpenRouter and OpenCode on August 20, but no one claimed it for days — sparking spirited debates online about which lab had dropped it.
“Before release, we tested GLM-5.3-Flash anonymously as ox-alpha on OpenCode and OpenRouter to gather user feedback,” the company wrote in its blog post. “It quickly became the most popular model of the week — with all of this traffic served on Chinese…
