Business Insider Follow Everything we know about Z.ai, the Chinese company behind the mysterious Ox Alpha model Z.ai revealed that mystery AI model Ox Alpha was GLM-5.3-Flash, which it had anonymously tested on OpenRouter and OpenCode. https://www.businessinsider.com/what-is-ox-alpha-ai-model-openroute-opencode-z-ai-2026-8 businessinsider.com