Quickstart

composer require cognesy/instructor-polyglot
# @doctest id="0626"

export OPENAI_API_KEY=sk-...
# @doctest id="c3c2"

<?php
require __DIR__ . '/vendor/autoload.php';

use Cognesy\Polyglot\Inference\Inference;
use Cognesy\Messages\Messages;

$answer = Inference::using('openai')
    ->withMessages(Messages::fromString('What is the capital of France?'))
    ->get();

echo "ASSISTANT: $answer\n";
// @doctest id="de85"

php test-polyglot.php

# Output:
# ASSISTANT: The capital of France is Paris.
# @doctest id="a134"

use Cognesy\Messages\Messages;

// Anthropic
$text = Inference::using('anthropic')
    ->withMessages(Messages::fromString('Explain dependency injection in one paragraph.'))
    ->get();

// Google Gemini
$text = Inference::using('gemini')
    ->withMessages(Messages::fromString('Explain dependency injection in one paragraph.'))
    ->get();

// Groq
$text = Inference::using('groq')
    ->withMessages(Messages::fromString('Explain dependency injection in one paragraph.'))
    ->get();
// @doctest id="3f50"

use Cognesy\Messages\Messages;

$text = Inference::using('openai')
    ->withModel('gpt-4.1')
    ->withMessages(Messages::fromString('Summarize the theory of relativity in two sentences.'))
    ->get();
// @doctest id="dd8a"

use Cognesy\Messages\Messages;

$stream = Inference::using('openai')
    ->withMessages(Messages::fromString('Write a short poem about PHP.'))
    ->stream();

foreach ($stream->deltas() as $delta) {
    echo $delta->contentDelta;
}
// @doctest id="2563"