GLM 5.3 Flash from Z.ai is now available on AI Gateway as zai/glm-5.3-flash .

GLM 5.3 Flash is a multimodal coding model with a 1M-token context window. It accepts both text and image inputs and supports function calling, structured output, and streaming.

import { streamText } from 'ai' ;

const result = streamText ( {

model : 'zai/glm-5.3-flash' ,

prompt : 'Build a responsive React dashboard with a collapsible sidebar.' ,

} ) ;

Stream a response from GLM 5.3 Flash through AI Gateway.

To include images, pass them with text in a message. A request can include multiple images using URLs, Base64 data URLs, or binary data:

import { readFileSync } from 'node:fs' ;

import { streamText } from 'ai' ;

const result = streamText ( {

model : 'zai/glm-5.3-flash' ,

messages : [

{

role : 'user' ,

content : [

{

type : 'text' ,

text : 'Recreate this screenshot as a responsive React component.' ,

} ,

{

type : 'file' ,

mediaType : 'image/png' ,

data : readFileSync ( 'screenshot.png' ) ,

} ,

] ,

} ,

]…