# Z.ai Releases GLM-5.3-Flash Multimodal Model

The 320B-A18B open-weight model features a 1M-token context window and is released under the MIT License.

- Standard API pricing is $0.15 per million input tokens, $0.50 per million output tokens, and $0.03 for cached inputs.
- Weights are available on Hugging Face, with the model running entirely on Chinese AI chips.
- The model was previously previewed under the name Ox Alpha.

## Why it matters

Developers can deploy or query an open-weight, 1M-context multimodal model under permissive open-source licensing at low API costs.

## Sources

- [Z.ai: Z.ai Releases GLM-5.3-Flash Multimodal Model](https://x.com/Zai_org/status/2092616204787626030)

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Summarized by dstilled on 2026-08-26. https://dstilled.ai/story/eefd36dd-45b6-471a-b801-f8136bd11f08