AI & Enterprise
Mystery AI model Ox Alpha confirmed as China\'s Z.ai product
China\'s AI research lab Z.ai has been confirmed as the developer of the anonymous coding model Ox Alpha. The model appeared on OpenRouter without a logo, company name or separate announcement and drew millions of developer queries in a week. It supports a 1,048,576-token context window and can handle text, images and video. Developers and researchers traced it through tokenizer fingerprinting, server-response comparisons and error-format tests.
