DeepSeek

Efficient models optimized for coding and technical tasks

Configuration

'deepseek' => [
    'api_key' => env('DEEPSEEK_API_KEY', ''),
    'url' => env('DEEPSEEK_URL', 'https://api.deepseek.com/v1')
]

Basic Usage

DeepSeek provides efficient models optimized for coding tasks:

use Prism\Prism\Facades\Prism;
use Prism\Prism\Enums\Provider;

$response = Prism::text()
    ->using(Provider::DeepSeek, 'deepseek-chat')
    ->withPrompt('Write a PHP function to validate email addresses')
    ->asText();

echo $response->text;

Streaming

DeepSeek supports streaming responses in real-time:

return Prism::text()
    ->using('deepseek', 'deepseek-chat')
    ->withPrompt(request('message'))
    ->asEventStreamResponse();

For complete streaming documentation, see Streaming Output.

Structured Output

DeepSeek supports structured output through prompt-based JSON generation:

use Prism\Prism\Facades\Prism;
use Prism\Prism\Schema\ObjectSchema;
use Prism\Prism\Schema\StringSchema;
use Prism\Prism\Schema\ArraySchema;

$schema = new ObjectSchema(
    'code_review',
    'Code review analysis',
    [
        new StringSchema('summary', 'Overall code quality summary'),
        new ArraySchema('issues', 'List of issues found',
            new StringSchema('issue', 'Individual issue')
        ),
        new ArraySchema('suggestions', 'Improvement suggestions',
            new StringSchema('suggestion', 'Individual suggestion')
        ),
    ],
    ['summary', 'issues', 'suggestions']
);

$response = Prism::structured()
    ->using('deepseek', 'deepseek-chat')
    ->withSchema($schema)
    ->withPrompt('Review this PHP code: function add($a, $b) { return $a + $b; }')
    ->asStructured();

dump($response->structured);

Tool Calling

DeepSeek supports function calling with custom tools:

use Prism\Prism\Facades\Prism;
use Prism\Prism\Tool;

$tools = [
    Tool::as('search_docs')
        ->for('Search Laravel documentation')
        ->withStringParameter('query', 'Search query')
        ->using(fn (string $query): string => "Documentation results for: {$query}"),
        
    Tool::as('run_code')
        ->for('Execute PHP code in sandbox')
        ->withStringParameter('code', 'PHP code to execute')
        ->using(fn (string $code): string => "Executed: {$code}"),
];

$response = Prism::text()
    ->using('deepseek', 'deepseek-chat')
    ->withTools($tools)
    ->withMaxSteps(3)
    ->withPrompt('Search for information about Laravel service containers')
    ->asText();

Use Cases

DeepSeek excels at:

Code Generation

$response = Prism::text()
    ->using('deepseek', 'deepseek-chat')
    ->withPrompt('Generate a Laravel migration for a users table with email verification')
    ->asText();

Code Explanation

$response = Prism::text()
    ->using('deepseek', 'deepseek-chat')
    ->withPrompt('Explain this code: ' . $codeSnippet)
    ->asText();

Debugging

$response = Prism::text()
    ->using('deepseek', 'deepseek-chat')
    ->withPrompt('Debug this PHP error: ' . $errorMessage)
    ->asText();

Code Refactoring

$response = Prism::text()
    ->using('deepseek', 'deepseek-chat')
    ->withPrompt('Refactor this code to follow SOLID principles: ' . $oldCode)
    ->asText();

Limitations

Embeddings

DeepSeek does not support embeddings. Use OpenAI, Gemini, or VoyageAI for embedding generation.

Tool Choice

DeepSeek does not support tool choice / required tools.

Images

DeepSeek does not support image inputs or generation. Use OpenAI, Anthropic, or Gemini for multimodal tasks.

Audio

DeepSeek does not support audio processing. Use OpenAI, Groq, or Mistral for audio tasks.

Performance Tips

Temperature Settings

For code generation, use lower temperatures for more deterministic output:

$response = Prism::text()
    ->using('deepseek', 'deepseek-chat')
    ->withTemperature(0.2)  // More deterministic
    ->withPrompt('Generate a PHP class for user authentication')
    ->asText();

Context Management

DeepSeek performs best with clear, well-structured prompts:

$response = Prism::text()
    ->using('deepseek', 'deepseek-chat')
    ->withPrompt("
        Task: Generate a PHP function
        Requirements:
        - Function name: calculateTotal
        - Parameters: array of numbers
        - Returns: sum of all numbers
        - Include error handling
        - Add PHPDoc comments
    ")
    ->asText();