> ## Documentation Index
> Fetch the complete documentation index at: https://docs.instructorphp.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Llm cohere

## Overview

Instructor supports Cohere API - you can find the details on how to configure
the client in the example below.

Inference feature compatibility:

* Instructor markdown-JSON fallback - supported, recommended as a fallback from JSON mode
* native JSON object response\_format - supported, recommended
* tool calling - partially supported, not recommended

Reasons tool calling is not recommended:

* Cohere does not support JSON Schema, which only allows to extract very simple, flat data schemas.
* Performance of the currently available versions of Cohere models in tools mode for Instructor use case (data extraction) is extremely poor.

## Example

```php theme={null}
<?php

use Cognesy\Messages\Messages;
use Cognesy\Polyglot\Inference\Inference;
use Cognesy\Utils\Str;

require 'examples/boot.php';

$answer = Inference::using('cohere')
    ->with(
        messages: Messages::fromString('What is the capital of France'),
        options: ['max_tokens' => 64]
    )
    ->get();

echo "USER: What is capital of France\n";
echo "ASSISTANT: $answer\n";
assert(Str::contains($answer, 'Paris'));
?>
```