Z.ai exposes GLM-5.3-Flash through model ID glm-5.3-flash. Use the setup steps, sourced pricing, capabilities, and official provider links below to validate this route before deployment.
Last refreshed 2026-08-26. Next refresh: weekly.
Quick Start
- 1
- 2Use the Z.ai SDK or REST API to call
glm-5.3-flash. - 3You'll be billed $0.07/1M input, $0.25/1M output tokens.
Code Examples
Pricing on Z.ai
| Type | Price (per 1M) |
|---|---|
| Input tokens | $0.07 |
| Output tokens | $0.25 |
Capabilities
About GLM-5.3-Flash
GLM-5.3-Flash is Z.ai's first native multimodal model in the GLM-5 series. It is a 320B-total / 18B-active Mixture-of-Experts model with a 1M-token context window and 131,072 max output tokens, supporting image, video, and file input plus function calling, tool use, structured outputs, reasoning, and prompt caching. MIT open weights are ungated on Hugging Face at zai-org/GLM-5.3-Flash. Official API model ID: glm-5.3-flash. The same model was previously tested anonymously as ox-alpha; that name is not a separate catalog slug.
Model Specs
Provider