GLM-5.1
Weights availableOpen-weight Z.ai model with a 198K-token context window. Released April 7, 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-5.1Also on the Z.ai API as glm-5.1
Updated Oct 1, 2026
Capabilities & limits
- Context window
- 198K
- Maximum output
- Not published
- Image input
- Unsupported
- Tool calling
- —
- Structured output
- Not published
Hosted price
USD / 1M tokens- Input
- $1.40
- Output
- $4.40
What Z.ai charges for glm-5.1, 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
- 744B
- Active parameters
- 40B
- Architecture
- Transformers class GlmMoeDsaForCausalLM
- Training / knowledge cutoff
- Not published
- Input modalities
- Text
- Output modalities
- Text
License
MIT (Hugging Face model card license: mit)
From Z.ai
Official announcement ↗How they describe it
our next-generation flagship model for agentic engineering
Release & lifecycle
- Published
- Apr 7, 2026
- available
- As of Oct 1, 2026