Perl Requires Chilkat v11.4.0+

Referencing a Pre-Uploaded File by file_id in an AI Request

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Some AI proviers have a Files API that lets you upload content once and then reference it later in generation requests using a file_id. This is especially useful for large documents, reuse across multiple prompts, or keeping inputs structured and separate from your prompt text.

This example demonstrates how to use a file_id in a request.

Chilkat2 Perl

use strict;
use warnings;
use Chilkat2;

my $success = 0;

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

my $ai = Chilkat2::Ai->new;

# The provider can be "openai", "google", "claude", "mistral", "deepseek", "xai", or any provider
# that supports referencing pre-uploaded files by a file_id (or file uri).
$ai->Provider('openai');

# Use your provider's API key.
$ai->ApiKey('MY_API_KEY');

# Choose a model.
$ai->Model('gpt-5.6-luna');

# See the following example showing how to upload a file
# Upload a File to an AI Provider (OpenAI, Google, Antropic, X)

# Use the file_id of the pre-uploaded file.
my $file_id = 'file-5G2xncrEiHbVfYPRpFgP9c';
$ai->InputAddFileId($file_id, 'application/json');

$ai->InputAddText('Explain why Hamlet delays taking revenge, using only evidence from the file.');

# Ask the AI for text output.
$success = $ai->Ask('text');
if (!$success) {
    print $ai->LastErrorText, "\n";
    exit;
}

# Get the text response.
my $sbResponse = Chilkat2::StringBuilder->new;
$ai->GetOutputTextSb($sbResponse);
print $sbResponse->GetAsString(), "\n";