MODELS
Z.ai: GLM Flash Latest
by Z.ai
Overview
Z.ai’s natively multimodal GLM-5 model with a 1M-token context window.
Details
GLM-5.3-Flash is a Z.ai GLM-5 model whose documented API model code is `glm-5.3-flash`. Z.ai describes it as natively multimodal, with 320B total parameters and 18B active parameters. Its model guide documents text, image, video, and file inputs, while the Z.ai model catalog lists a 1M-token context window and English and Chinese support. The linked Chat Completion API supports bearer-token authentication, multimodal messages, tool use, and streaming.
When to Use
Build workflows that combine text, images, video, or files in a single model interaction. Process long documents or other workloads that benefit from the documented 1M-token context window. Integrate a model through Z.ai’s Chat Completion API with streaming or tool use.
Getting Started
- Read the GLM-5.3-Flash overview in Z.ai Developer Documentation.
- Create a Z.ai API integration authenticated with a bearer token.
- Call the Chat Completion API using the model code `glm-5.3-flash`.
- Test representative text, image, video, and file inputs before deployment.
Key Features
- •Natively multimodal GLM-5 model
- •320B total parameters and 18B active parameters
- •Text, image, video, and file inputs
- •1M-token context window
- •Chat Completion API support for tool use and streaming
Capabilities
- •text input
- •image input
- •video input
- •file input
- •long-context processing
- •tool use
- •streaming
Last updated Sep 3, 2026