diff --git a/src/Provider/OpenAIProvider.php b/src/Provider/OpenAIProvider.php
index ed2888d..4d42521 100644
--- a/src/Provider/OpenAIProvider.php
+++ b/src/Provider/OpenAIProvider.php
@@ -54,11 +54,11 @@ final class OpenAIProvider implements LLMProviderInterface
         array $config = [],
     ) {
         $host = $config['host'] ?? 'https://api.openai.com/v1';
-        $key = $config['key'] ?? ($_SERVER['OPENAI_API_KEY'] ?? null);
+        $key = $config['key'] ?? ($_SERVER['JSONFICATOR_OPENAI_API_KEY'] ?? $_ENV['JSONFICATOR_OPENAI_API_KEY'] ?? null);
 
         if ($key === null || $key === '') {
             throw new ProviderException(
-                'OpenAI API key is required. Provide it via the "key" config option or the OPENAI_API_KEY environment variable.'
+                'OpenAI API key is required. Provide it via the "key" config option or the JSONFICATOR_OPENAI_API_KEY environment variable.'
             );
         }
 
diff --git a/tests/Integration/OpenAIIntegrationTest.php b/tests/Integration/OpenAIIntegrationTest.php
index e583798..0d81bc1 100644
--- a/tests/Integration/OpenAIIntegrationTest.php
+++ b/tests/Integration/OpenAIIntegrationTest.php
@@ -33,8 +33,9 @@ final class OpenAIIntegrationTest extends TestCase
     public function testToJsonExtractsData(): void
     {
         $provider = new OpenAIProvider([
+            'host' => 'https://llm.geckon01.ru',
             'key' => self::$apiKey,
-            'model' => 'gpt-4o-mini',
+            'model' => 'gemma4:latest',
         ]);
 
         $jsonFicator = new JsonFicator($provider);
diff --git a/tests/Unit/OpenAIProviderTest.php b/tests/Unit/OpenAIProviderTest.php
index 9fb9286..a4f41d5 100644
--- a/tests/Unit/OpenAIProviderTest.php
+++ b/tests/Unit/OpenAIProviderTest.php
@@ -39,13 +39,13 @@ final class OpenAIProviderTest extends TestCase
 
     public function testAcceptsApiKeyFromEnvironment(): void
     {
-        $_SERVER['OPENAI_API_KEY'] = 'sk-env';
+        $_SERVER['JSONFICATOR_OPENAI_API_KEY'] = 'sk-env';
 
         try {
             $provider = new OpenAIProvider();
             $this->assertInstanceOf(OpenAIProvider::class, $provider);
         } finally {
-            unset($_SERVER['OPENAI_API_KEY']);
+            unset($_SERVER['JSONFICATOR_OPENAI_API_KEY']);
         }
     }
 }