# GLM-4.5-Flash

`glm-4.5-flash` — **zai** · CHAT

> GLM-4.5-Flash (glm-4.5-flash) is a chat model from zai with a 128K-token context window; proprietary (API-only); capabilities tools, reasoning; input text; output text.

| Field | Value |
| --- | --- |
| Vendor | zai |
| Kind | CHAT |
| Context window | 128,000 tokens |
| Max output tokens | 32,000 tokens |
| Input modalities | text |
| Output modalities | text |
| Capabilities | tools, reasoning |
| Weights | Proprietary (API-only) |
| Knowledge cutoff | 2025-04 |
| Release date | 2025-07-28 |
| 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-4.5-flash.html)*