Sources & verification notes
GLM-5.3
zai-org/GLM-5.3Exact identifier & access
Identity and lifecycle apply to this exact identifier and serving surface.
- GLM-5.3 model card (Hugging Face) ↗Z.ai (Hugging Face zai-org) · provider-authored · checked Oct 1, 2026
First availability
Effective date not established; this is an observation. Checked Oct 1, 2026.
Not verified. These sources establish the identifier, not this missing fact.
- GLM-5.3 model card (Hugging Face) ↗Z.ai (Hugging Face zai-org) · provider-authored · checked Oct 1, 2026
Availability status
Effective date not established; this is an observation. Checked Oct 1, 2026.
Repository is listed publicly in the zai-org Hugging Face organization.
- GLM-5.3 model card (Hugging Face) ↗Z.ai (Hugging Face zai-org) · provider-authored · checked Oct 1, 2026
Capabilities & limits
Effective date not established; this is an observation. Checked Oct 1, 2026.
The model card states no context length, so this is config.json max_position_embeddings (1,048,576). Z.ai's API docs give 1M for the hosted model. The card does not document tool calling. No maximum output or structured-output support is stated.
- GLM-5.3 model card (Hugging Face) ↗Z.ai (Hugging Face zai-org) · provider-authored · checked Oct 1, 2026
Input price
Effective date not established; this is an observation. Checked Oct 1, 2026.
Downloadable weights; no Z.ai per-token price applies.
- GLM-5.3 model card (Hugging Face) ↗Z.ai (Hugging Face zai-org) · provider-authored · checked Oct 1, 2026
Output price
Effective date not established; this is an observation. Checked Oct 1, 2026.
Downloadable weights; no Z.ai per-token price applies.
- GLM-5.3 model card (Hugging Face) ↗Z.ai (Hugging Face zai-org) · provider-authored · checked Oct 1, 2026
Reference price
Effective date not established; this is an observation. Checked Oct 1, 2026.
The developer's own API price for glm-5.3, which serves this model (https://github.com/zai-org/GLM-5). Z.ai's GLM-5 README links the zai-org/GLM-5.3 weights and says to use GLM-5.3 API services on docs.z.ai/guides/llm/glm-5.3.
- Z.ai Open Platform API pricing for glm-5.3 ↗Z.ai · provider-authored · checked Oct 1, 2026
Model card
Effective date not established; this is an observation. Checked Oct 1, 2026.
- GLM-5.3 model card (Hugging Face) ↗Z.ai (Hugging Face zai-org) · provider-authored · checked Oct 1, 2026
- GLM-5 GitHub README (model download table) ↗Z.ai · provider-authored · checked Oct 1, 2026
Official announcement
Effective date not established; this is an observation. Checked Oct 1, 2026.
- GLM-5.3: Frontier Coding with Emergent Cyber Capabilities (Z.ai blog) ↗Z.ai · provider-authored · checked Oct 1, 2026
Provider description
Effective date not established; this is an observation. Checked Oct 1, 2026.
- GLM-5.3 model card (Hugging Face) ↗Z.ai (Hugging Face zai-org) · provider-authored · checked Oct 1, 2026
License
Effective date not established; this is an observation. Checked Oct 1, 2026.
- GLM-5.3 model card (Hugging Face) ↗Z.ai (Hugging Face zai-org) · provider-authored · checked Oct 1, 2026