Z.ai - Mixture of experts - verified
Run GLM-5.3 locally
GLM-5.3 is a 753.3B mixture-of-experts model from Z.ai with a 1.05M-token context window, released under GLM-5.3 License (commercial use is allowed with conditions set out in the license); the smallest listed download is 418.3 GB, the 4bit MLX build from mlx-community/GLM-5.3-4bit.
Official weights: zai-org/GLM-5.3
- Total params
- 753.3B
- Architecture
- Mixture of experts
- Context
- 1.05M
- Smallest download
- 418.3 GB
Fits in
Smallest download at most 85% of memoryNone of the tiers here. The smallest listed download is 418.3 GB, more than 85% of 256 GB.
Downloads
The official weights and every quantization listed for this model, with file sizes from Hugging Face.
| Download | Format | Size | Repo |
|---|---|---|---|
Official weights | FP8 | 755.6 GB | zai-org/GLM-5.3 |
UD-Q4_K_XL | GGUF | 467.3 GB | unsloth/GLM-5.3-GGUF |
Q8_0 | GGUF | 801.4 GB | unsloth/GLM-5.3-GGUF |
4bitSmallest listed | MLX | 418.3 GB | mlx-community/GLM-5.3-4bit |
GB is decimal: 1 GB = 10^9 bytes. Add memory for the context and the operating system on top of the file size.
Run it
The official pages read for this directory publish no copyable run command for GLM-5.3. Download the weights from zai-org/GLM-5.3 and follow the model card's serving instructions.
Not sure which runtime to use? Compare local LLM runtimes by platform, API and features.
License
- License
- GLM-5.3 License
other - Commercial use
- Commercial use: ConditionsCommercial use is allowed with conditions set out in the license.
- Gated download
- No. The files download directly.
Worth knowing
The card exposes a reasoning_effort setting (low, high, max), and the license requires a Z.AI security review for model-as-a-service businesses above 10 billion USD in revenue.
Released (per the announcement).
FAQ
How big is the GLM-5.3 download?
The official FP8 weights in zai-org/GLM-5.3 are 755.6 GB. The smallest listed download is 418.3 GB, the 4bit MLX build from mlx-community/GLM-5.3-4bit. Plan for more memory than the file size: the context (KV cache) and the operating system need room too.
Can I use GLM-5.3 commercially?
GLM-5.3 is released under GLM-5.3 License, and commercial use is allowed with conditions set out in the license. The license text is at https://huggingface.co/zai-org/GLM-5.3/blob/main/LICENSE.
How much memory do I need for GLM-5.3?
Its smallest listed download is 418.3 GB, more than 85% of 256 GB, so it needs a multi-GPU server or a machine with more memory than the largest tier here.
What is the context length of GLM-5.3?
1,048,576 tokens. A longer context needs more memory for the KV cache, so you can run with a shorter one when memory is tight.
Sources
Last verified from the pages below.
- Hugging Face model card - huggingface.co
- config.json - huggingface.co
- Z.ai announcement - z.ai
- unsloth GGUF - huggingface.co
- MLX 4-bit - huggingface.co
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