GLM-5.3-Flash
Weights availableOpen-weight Z.ai model with a 1M-token context window and image input. Released August 26, 2026. Weights on Hugging Face.
Access details: Z.ai open weights (Hugging Face)
The Hugging Face repository. Download the weights and run them yourself or with a host.
zai-org/GLM-5.3-FlashAlso on the Z.ai API as glm-5.3-flash
Updated Oct 1, 2026
Capabilities & limits
- Context window
- 1M
- Maximum output
- Not published
- Image input
- Supported
- Tool calling
- —
- Structured output
- Not published
Hosted price
USD / 1M tokens- Input
- $0.15
- Output
- $0.50
What Z.ai charges for glm-5.3-flash, its API version of this model.
Free to download. Running the weights costs whatever your hardware or host charges.
Price history
Oct 1, 2026
Input Not applicable per million tokens
Oct 1, 2026
Output Not applicable per million tokens
Technical details
- Parameters
- 320B
- Active parameters
- 18B
- Architecture
- Transformers class Glm5NextForConditionalGeneration
- Training / knowledge cutoff
- Not published
- Input modalities
- Text, image, video
- Output modalities
- Text
License
MIT (Hugging Face model card license: mit)
From Z.ai
Official announcement ↗How they describe it
the first natively multimodal model in the GLM-5 series
Release & lifecycle
- Published
- Aug 26, 2026
- available
- As of Oct 1, 2026