(Objective-C) Multimodal Input: Image Data

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Note: This example requires Chilkat v11.2.0 or greater.

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#import <CkoAi.h>
#import <CkoBinData.h>
#import <CkoStringBuilder.h>

BOOL success = NO;

// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

CkoAi *ai = [[CkoAi alloc] init];

// The provider can be "openai", "google", "claude", "deepseek", "xai", or "perplexity".
// Support for additional providers will be added in future versions of Chilkat.
// xAI (Grok) will be used here..
ai.Provider = @"xai";

// Use your provider's API key.
ai.ApiKey = @"MY_API_KEY";

// Choose a model.
ai.Model = @"grok-4";

// Add both text input, and image data
[ai InputAddText: @"Describe what you see in the following image."];

CkoBinData *bd = [[CkoBinData alloc] init];
// We're passing a relative local file path here.. (relative the the app's current working directory)
success = [bd LoadFile: @"qa_data/jpg/starfish.jpg"];
if (success == NO) {
    NSLog(@"%@",bd.LastErrorText);
    return;
}

[ai InputAddImageData: bd summary: @""];

// Ask the AI for text output.
success = [ai Ask: @"text"];
if (success == NO) {
    NSLog(@"%@",ai.LastErrorText);
    return;
}

// Get the text response.
CkoStringBuilder *sbResponse = [[CkoStringBuilder alloc] init];
[ai GetOutputTextSb: sbResponse];
NSLog(@"%@",[sbResponse GetAsString]);

// -------------------------------------------------------------
// The response is in markdown format.
// Also see Markdown to HTML Conversion Examples.
// -------------------------------------------------------------

// Sample output:

// The image depicts a small, bright orange starfish (also known as a sea star) with five symmetrical arms radiating from a central disc. 
// It has a textured, bumpy surface that gives it a realistic, almost spiky appearance, and there's a small hole or indentation at the center, 
// which might represent the mouth or a natural feature. The starfish is shown against a plain white background, and it appears to be a simple, 
// illustrative or clipart-style graphic rather than a photograph.