Vision

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Vision Chat Completion Usage

Portkey supports the OpenAI signature to define messages with images as part of the API request. Images are made available to the model in two main ways: by passing a link to the image or by passing the base64 encoded image directly in the request.

Here’s an example using OpenAI’s gpt-4-vision-preview model

• NodeJS
• Python
• OpenAI NodeJS
• OpenAI Python
• cURL

import Portkey from 'portkey-ai';

// Initialize the Portkey client
const portkey = new Portkey({
    apiKey: "PORTKEY_API_KEY",  // Replace with your Portkey API key
    virtualKey: "VIRTUAL_KEY"   // Add your provider's virtual key
});

// Generate a chat completion with streaming
async function getChatCompletionFunctions(){
  const response = await portkey.chat.completions.create({
    model: "gpt-4-vision-preview",
    messages: [
      {
        role: "user",
        content: [
          { type: "text", text: "What’s in this image?" },
          {
            type: "image_url",
            image_url:
              "https://upload.wikimedia.org/wikipedia/commons/thumb/d/dd/Gfp-wisconsin-madison-the-nature-boardwalk.jpg/2560px-Gfp-wisconsin-madison-the-nature-boardwalk.jpg",
          },
        ],
      },
    ],
  });

  console.log(response)

}
await getChatCompletionFunctions();

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API Reference

On completion, the request will get logged in the logs UI where any image inputs or outputs can be viewed. Portkey will automatically load the image URLs or the base64 images making for a great debugging experience with vision models.

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Creating prompt templates for vision models

Portkey’s prompt library supports creating templates with image inputs. If the same image will be used in all prompt calls, you can save it as part of the template’s image URL itself. Or, if the image will be sent via the API as a variable, add a variable to the image link.

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Supported Providers and Models

The following providers are supported for image generation with more providers getting added soon. Please raise a request or a PR to add model or provider to the AI gateway.