GLM 5.3 Flash
GLM-5.3-Flash is a native multimodal model from Z.ai. It is suited for efficient coding and long-horizon agent tasks. Its hybrid sparse and linear attention architecture maintains accurate long-context behavior while reducing compute overhead.
Specifications
| Lab | Z.ai |
|---|---|
| Context window | 1.3M tokens |
| Input price | $0.04/1M |
| Output price | $0.50/1M |
| Release | Aug 2026 |
Strengths
- Low-cost model for coding and agent tasks
- 1.31M-token context window
- Hybrid sparse and linear attention architecture
Weaknesses
- Flash tier trades capability for lower cost
- New release with limited public evaluation
Best for
- Budget coding assistants
- Long-context agents
- High-volume automation
In Depth: GLM 5.3 Flash
Summary
GLM 5.3 Flash is an AI model from Z.ai.
Released in Aug 2026. It takes text, image, and video input and produces text output, with a context window of 1.3M tokens. Input pricing is $0.04 per 1M tokens and output is $0.50 per 1M tokens on OpenRouter.