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GLM-5.3-Flash: Z.ai Reveals Ox Alpha Was Its Open Multimodal Model

This story is from 2026-08-26. It is preserved in the archive; the latest stories are on the live feed.

For the past week, developers have been puzzling over a model called Ox Alpha. It appeared on OpenCode and OpenRouter on August 20 with no owner attached, free to use, with a 1M-token context window and support for image and video input. Independent researchers fingerprinted its tokenizer, ran comp…

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  1. 2026-08-26 15:51 · DEV Community — AI
    GLM-5.3-Flash: Z.ai Reveals Ox Alpha Was Its Open Multimodal Model

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