Zhipu AI Confirms Viral 'Ox Alpha' Model is New GLM Version, Will Release Weights
Zhipu AI has confirmed that the viral anonymous model "Ox Alpha" is a new iteration of its GLM series. The company also announced the imminent release of the model's weights. The model broke usage records during its anonymous preview on OpenRouter, making the release of its weights a highly anticipated event for the open-source AI community. It demonstrates the high demand and competitive performance of Zhipu's latest model architecture. Researchers identified the model by analyzing tokenizer fingerprints across 25 prompts, which almost perfectly matched GLM-5.3 except for a constant 75-token wrapper deviation. The model's video encoder behavior and API response patterns also aligned closely with Zhipu's architecture.
## BACKGROUND
Zhipu AI is a prominent Chinese artificial intelligence company that develops the GLM (General Language Model) family of models. OpenRouter is a popular API gateway that aggregates hundreds of large language models, allowing developers to access them through a single endpoint and test anonymous models. Tokenizer fingerprinting is a technique used to identify an undisclosed AI model by analyzing how it segments text into tokens compared to known models.