Dart Requires Chilkat v11.2.0+

Multimodal Input: File Data

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Demonstrates sending a request that includes both text and PDF file data for the AI to analyze.

Note: At the time of writing this example, xAI, Perplexity, and DeepSeek do not have the ability to accept non-image multimodal data or URLs.

Dart

import 'package:chilkat/chilkat.dart';

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

  final ai = CkAi();

  // The provider can be "openai", "google", or "claude".
  // At the time of writing this example, "deepseek", "xai", and "perplexity" do not have the ability to process non-image multimodal inputs.
  // Support for additional providers will be added in future versions of Chilkat.
  ai.provider = 'claude';

  // Use your provider's API key.
  ai.apiKey = 'MY_API_KEY';

  // Choose a model.
  ai.model = 'claude-opus-5';

  // Add both text input, and PDF file data.
  ai.inputAddText('What is in this file?');

  final bd = CkBinData();
  // We're passing a relative local file path here.. (relative the the app's current working directory)
  try {
    bd.loadFile('qa_data/pdf/shakespeare.pdf');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Provide the filename in the 1st argument.  The file extension is important to indicate the type of file.
  ai.inputAddFileData('shakespeare.pdf', bd, '');

  // Ask the AI for text output.
  try {
    ai.ask('text');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Get the text response.
  final sbResponse = CkStringBuilder();
  ai.getOutputTextSb(sbResponse);
  print(sbResponse.getAsString());

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

  // Sample output:

  // This PDF file contains a famous quote from William Shakespeare's "Romeo and Juliet". The quote appears twice on the page:
  // 
  // "These violent delights have violent ends
  // And in their triumph die, like fire and powder,
  // Which as they kiss consume. The sweetest honey
  // Is loathsome in his own deliciousness
  // And in the taste confounds the appetite.
  // Therefore love moderately; long love doth so;
  // Too swift arrives as tardy as too slow."
  // 
  // The file also includes a portrait image of William Shakespeare. This particular quote is spoken by Friar Lawrence in the play, warning about the dangers of passionate, 
  // immoderate love - suggesting that love that burns too intensely tends to burn out quickly, just as fire and gunpowder consume each other when they meet.
}