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GLM 5.3 Flash now available on AI Gateway

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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'),
        },
      ],
    },
  ],
});

Send an image and text to GLM 5.3 Flash.

To use GLM 5.3 Flash with a coding agent, run vercel ai-gateway coding-agents setup, then select zai/glm-5.3-flash as your agent's model.

Try GLM 5.3 Flash in the model playground, or browse all language models.