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Z.ai releases GLM-5.3-Flash, a natively multimodal open-weight model under MIT License

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Z.ai releases GLM-5.3-Flash, a 320B-A18B model with a 1M-token context window that accepts multimodal input. The model is released under the MIT License, with weights available on Hugging Face and access through the Z.ai API and Coding Plan. The company says it was previously previewed as Ox Alpha and ran entirely on Chinese AI chips.

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The post gives the parameter count, license, context window, and access routes, which helps readers judge whether the model fits their own deployment needs.

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Introducing GLM-5.3-Flash

  • Leading capabilities at a highly competitive price
  • Natively multimodal with a 1M-token context window
  • A 320B-A18B model released under the MIT License
  • Previously previewed as Ox Alpha, running entirely on Chinese AI chips

Blog: http://z.ai/blog/glm-5.3-flash

Available now across all official platforms:

Weights: http://huggingface.co/zai-org/GLM-5.3-Flash
API: http://docs.z.ai/guides/llm/glm-5.3-flash
Coding Plan: http://z.ai/subscribe
ZCode: http://zcode.z.ai/en
Chat: http://chat.z.ai
AutoClaw: http://autoclaw.z.ai

Source: Z.ai · x.comPublished · added here

Topics

Zhipu GLM (Z.ai)Multimodal AIOpen-source ecosystemDeployment & engineeringChina AIModel releases