# GLM 5.3 Flash: API price, context window and how to connect

GLM 5.3 Flash by Z.ai (Zhipu): $0.048 per million input tokens, $0.2 per million output tokens, a 1.05M-token window. What it is good for, what to compare it with and how to connect it in SKILLOK.

## In short

A multimodal Z.ai model for economical coding and long agentic tasks. Its hybrid attention (sparse and linear) keeps long-context behavior accurate. The weights are open.

## Specifications

| | |
|---|---|
| Provider | [Z.ai (Zhipu)](https://skillok.org/docs/en/ai-models/providers/zhipu) |
| Released | 2026-08-26 |
| Context window | 1.05M tokens |
| Accepts | text, images, video |
| Answers with | text |
| Reasoning mode | yes |
| Tool calling | yes |
| Open weights | yes |
| Identifier | `z-ai/glm-5.3-flash` |

## Price

| Per 1M tokens | In dollars |
|---|---|
| Input (question, context) | $0.048 |
| Output (answer) | $0.2 |

For reference: a conversation of 20 questions of ~500 tokens and answers of ~800 tokens costs about **$0.004**. Models in reasoning mode spend more tokens on an answer than the text shows: the reasoning is paid for too.

## What it is good for

* Code for very little money
* Long context
* Images and video as input

## Similar models

Catalog models with the same kind of output, closest in the price of a typical request.

| Model | Input | Output | Window | Price |
|---|---|---|---|---|
| [DeepSeek V4 Flash 0423](https://skillok.org/docs/en/ai-models/models/deepseek-v4-flash) | $0.091 | $0.182 | 1.05M | 1.2× more expensive |
| [Llama 4 Scout](https://skillok.org/docs/en/ai-models/models/llama-4-scout) | $0.1 | $0.3 | 1.31M | 1.7× more expensive |
| [Llama 3.3 70B Instruct](https://skillok.org/docs/en/ai-models/models/llama-3-3-70b-instruct) | $0.1 | $0.32 | 131K | 1.7× more expensive |
| [DeepSeek V4.1 Flash](https://skillok.org/docs/en/ai-models/models/deepseek-v4-1-flash) | $0.044 | $0.08 | 1.05M | 1.9× cheaper |
| [GPT-6 Luna](https://skillok.org/docs/en/ai-models/models/gpt-6-luna) | $0.1 | $0.5 | 1.05M | 2.4× more expensive |

## Other Z.ai (Zhipu) models

* [GLM 5.3](https://skillok.org/docs/en/ai-models/models/glm-5-3)
* [GLM 5.3 Prime](https://skillok.org/docs/en/ai-models/models/glm-5-3-prime)

## How to connect in SKILLOK

GLM 5.3 Flash works through OpenRouter: add an OpenRouter key in **Settings → AI** and pick the `z-ai/glm-5.3-flash` model. It then becomes available in Space AI, in tasks and to the repository agent. In detail — [Connecting a model in SKILLOK](https://skillok.org/docs/en/ai-models/connecting-in-skillok).

## Where the data comes from

Prices, the context window and capabilities come from the public OpenRouter catalog as of 2026-10-19. A provider may change the price — the exact figure is always on the model's OpenRouter page.

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https://skillok.org/docs/en/ai-models/models/glm-5-3-flash