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  1. Products
  2. Workers AI
  3. Models
  4. uform-gen2-qwen-500m

uform-gen2-qwen-500m

Beta

Model ID: @cf/unum/uform-gen2-qwen-500m

UForm-Gen is a small generative vision-language model primarily designed for Image Captioning and Visual Question Answering. The model was pre-trained on the internal image captioning dataset and fine-tuned on public instructions datasets: SVIT, LVIS, VQAs datasets.

More Information  

​​ Properties

Task Type: Image-to-Text

​​ Code Examples

Workers - TypeScript
export interface Env {
  AI: Ai;

}




export default {
  async fetch(request: Request, env: Env): Promise<Response> {
    const res = await fetch("https://cataas.com/cat");
    const blob = await res.arrayBuffer();
    const input = {
      image: [...new Uint8Array(blob)],
      prompt: "Generate a caption for this image",
      max_tokens: 512,
    };
    const response = await env.AI.run(
      "@cf/unum/uform-gen2-qwen-500m",
      input
      );
    return new Response(JSON.stringify(response));
  },

} satisfies ExportedHandler<Env>;

​​ Response

{
    "description": " This is a photo of a supdog."

}

​​ API Schema

The following schema is based on JSON Schema

Input JSON Schema
{

"oneOf": [
  {
    "type": "string",
    "format": "binary"
  },
  {
    "type": "object",
    "properties": {
      "temperature": {
        "type": "number"
      },
      "prompt": {
        "type": "string"
      },
      "raw": {
        "type": "boolean",
        "default": false
      },
      "messages": {
        "type": "array",
        "items": {
          "type": "object",
          "properties": {
            "role": {
              "type": "string"
            },
            "content": {
              "type": "string",
              "maxLength": 6144
            }
          },
          "required": [
            "role",
            "content"
          ]
        }
      },
      "image": {
        "oneOf": [
          {
            "type": "array",
            "items": {
              "type": "number"
            }
          },
          {
            "type": "string",
            "format": "binary"
          }
        ]
      },
      "max_tokens": {
        "type": "integer",
        "default": 512
      }
    },
    "required": [
      "image"
    ],
    "not": {
      "required": [
        "prompt",
        "messages"
      ]
    },
    "errorMessage": {
      "not": "\"prompt\" and \"messages\" are mutually exclusive"
    }
  }

]

}
Output JSON Schema
{

"type": "object",

"contentType": "application/json",

"properties": {
  "description": {
    "type": "string"
  }

}

}