Pascal (Lazarus/Delphi)

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.

Pascal (Lazarus/Delphi)

program ChilkatDemo;

// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.

{$IFDEF FPC}
  {$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}

uses
  {$IFDEF UNIX}
  cthreads,
  {$ENDIF}
  SysUtils,
  CkDllLoader,
  Chilkat.BinData,
  Chilkat.Ai,
  Chilkat.StringBuilder;

// ---------------------------------------------------------------------------

procedure RunDemo;
var
  success: Boolean;
  ai: TAi;
  bd: TBinData;
  sbResponse: TStringBuilder;

begin
  success := False;

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

  ai := TAi.Create;

  //  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-4-1-20250805';

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

  bd := TBinData.Create;
  //  We're passing a relative local file path here.. (relative the the app's current working directory)
  success := bd.LoadFile('qa_data/pdf/shakespeare.pdf');
  if (success = False) then
    begin
      WriteLn(bd.LastErrorText);
      Exit;
    end;

  //  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.
  success := ai.Ask('text');
  if (success = False) then
    begin
      WriteLn(ai.LastErrorText);
      Exit;
    end;

  //  Get the text response.
  sbResponse := TStringBuilder.Create;
  ai.GetOutputTextSb(sbResponse);
  WriteLn(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.


  ai.Free;
  bd.Free;
  sbResponse.Free;

end;

// ---------------------------------------------------------------------------

begin

  try
    RunDemo;
  except
    on E: Exception do
      WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
  end;

  WriteLn;
  {$IFDEF MSWINDOWS}
  WriteLn('Press Enter to exit...');
  ReadLn;
  {$ENDIF}
end.