# GLM-5.3-Flash

`glm-5.3-flash` — **zai** · CHAT

> GLM-5.3-Flash (glm-5.3-flash) is a chat model from zai with a 1.0M-token context window; open-weight; capabilities tools, vision, reasoning; input image, pdf, text, video; output text.

| Field | Value |
| --- | --- |
| Vendor | zai |
| Kind | CHAT |
| Context window | 1,048,576 tokens |
| Max output tokens | 128,000 tokens |
| Indicative price (US list) | $0.15 in / $0.5 out per 1M tokens (indicative US list — verify with vendor) |
| Input modalities | image, pdf, text, video |
| Output modalities | text |
| Capabilities | tools, vision, reasoning |
| Weights | Open-weight |
| Release date | 2026-08-26 |
| Sources | litellm, models-dev |
| Last verified | 2026-10-30 |

*Part of the [Model Catalog](https://openviglet.github.io/model-catalog/) — [zai models](https://openviglet.github.io/model-catalog/models/zai/) · [Vendor JSON](https://openviglet.github.io/model-catalog/by-vendor/zai.json) · [HTML](https://openviglet.github.io/model-catalog/models/zai/glm-5.3-flash.html)*