Surprise: Z.ai is the AI lab behind the mysterious Ox Alpha model
TechCrunch Rebecca Bellan ● Covered by 3 sources
Z.ai confirmed that it is the AI lab behind the anonymous open-weight Ox Alpha model that was circulating on OpenRouter. Z.ai said it will release Ox Alpha’s weights on Wednesday. After the weights release, developers can build on top of the reasoning-focused model and compete with other labs’ frontier offerings.
Why it matters
Z.ai confirms it is behind Ox Alpha, the mysterious open AI model topping benchmarks and leaderboards, and its weights are set to be released soon.