# GLM 5.3 FlashX

GLM-5.3-FlashX is the high-speed serving option for Z.ai’s native multimodal coding model, featuring 320B total parameters, 18B activated parameters, and a 1M-token context window. Its efficient hybrid attention architecture supports visual coding, tool use, and end-to-end professional workflows across code, browsers, documents, and graphical interfaces.

- **Model ID:** `zai/glm-5.3-flashx`
- **Type:** chat
- **Providers:** zai
- **Context window:** 1,000,000
- **Maximum output tokens:** 131,072
- **Pricing:** $0.37/1M input tokens, $1.25/1M output tokens
- **Canonical page:** https://vercel.com/ai-gateway/models/glm-5.3-flashx

## Supported parameters

Detailed capability metadata has not been reported for this model.

## Example

```ts
import { streamText } from 'ai'

const result = streamText({
  model: 'zai/glm-5.3-flashx',
  prompt: 'Why is the sky blue?'
})
```

## Links

- [Model page](https://vercel.com/ai-gateway/models/glm-5.3-flashx)
- [AI Gateway documentation](https://vercel.com/docs/ai-gateway)
- [Provider model documentation](https://docs.z.ai/guides/vlm/glm-5.3-flash)
- [Provider pricing](https://docs.z.ai/guides/overview/pricing)


If you encounter incorrect information, can’t find what you need, need a capability Vercel doesn’t currently offer, or have any other feedback to report, please do it by following the instructions at https://vercel.com/feedback.md.