diff --git a/examples/structured-output-math.php b/examples/structured-output-math.php
index 7dd48d25..81b46f47 100644
--- a/examples/structured-output-math.php
+++ b/examples/structured-output-math.php
@@ -8,7 +8,7 @@
 use PhpLlm\LlmChain\OpenAI\Platform\OpenAI;
 use PhpLlm\LlmChain\StructuredOutput\ChainProcessor;
 use PhpLlm\LlmChain\StructuredOutput\ResponseFormatFactory;
-use PhpLlm\LlmChain\Tests\StructuredOutput\Data\MathReasoning;
+use PhpLlm\LlmChain\Tests\Fixture\StructuredOutput\MathReasoning;
 use Symfony\Component\Dotenv\Dotenv;
 use Symfony\Component\HttpClient\HttpClient;
 use Symfony\Component\Serializer\Encoder\JsonEncoder;
diff --git a/tests/StructuredOutput/Data/MathReasoning.php b/tests/Fixture/StructuredOutput/MathReasoning.php
similarity index 79%
rename from tests/StructuredOutput/Data/MathReasoning.php
rename to tests/Fixture/StructuredOutput/MathReasoning.php
index 1c74435a..f0f6c87d 100644
--- a/tests/StructuredOutput/Data/MathReasoning.php
+++ b/tests/Fixture/StructuredOutput/MathReasoning.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace PhpLlm\LlmChain\Tests\StructuredOutput\Data;
+namespace PhpLlm\LlmChain\Tests\Fixture\StructuredOutput;
 
 final class MathReasoning
 {
diff --git a/tests/StructuredOutput/Data/Step.php b/tests/Fixture/StructuredOutput/Step.php
similarity index 74%
rename from tests/StructuredOutput/Data/Step.php
rename to tests/Fixture/StructuredOutput/Step.php
index 4738ac47..028ecc5b 100644
--- a/tests/StructuredOutput/Data/Step.php
+++ b/tests/Fixture/StructuredOutput/Step.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace PhpLlm\LlmChain\Tests\StructuredOutput\Data;
+namespace PhpLlm\LlmChain\Tests\Fixture\StructuredOutput;
 
 final class Step
 {
diff --git a/tests/StructuredOutput/Data/User.php b/tests/Fixture/StructuredOutput/User.php
similarity index 80%
rename from tests/StructuredOutput/Data/User.php
rename to tests/Fixture/StructuredOutput/User.php
index 0e7d5161..50220df1 100644
--- a/tests/StructuredOutput/Data/User.php
+++ b/tests/Fixture/StructuredOutput/User.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace PhpLlm\LlmChain\Tests\StructuredOutput\Data;
+namespace PhpLlm\LlmChain\Tests\Fixture\StructuredOutput;
 
 final class User
 {
diff --git a/tests/StructuredOutput/ResponseFormatFactoryTest.php b/tests/StructuredOutput/ResponseFormatFactoryTest.php
index 29067c9f..bd9f736d 100644
--- a/tests/StructuredOutput/ResponseFormatFactoryTest.php
+++ b/tests/StructuredOutput/ResponseFormatFactoryTest.php
@@ -6,7 +6,7 @@
 
 use PhpLlm\LlmChain\StructuredOutput\ResponseFormatFactory;
 use PhpLlm\LlmChain\StructuredOutput\SchemaFactory;
-use PhpLlm\LlmChain\Tests\StructuredOutput\Data\User;
+use PhpLlm\LlmChain\Tests\Fixture\StructuredOutput\User;
 use PHPUnit\Framework\Attributes\CoversClass;
 use PHPUnit\Framework\Attributes\Test;
 use PHPUnit\Framework\Attributes\UsesClass;
diff --git a/tests/StructuredOutput/SchemaFactoryTest.php b/tests/StructuredOutput/SchemaFactoryTest.php
index 3695a362..7069f8c9 100644
--- a/tests/StructuredOutput/SchemaFactoryTest.php
+++ b/tests/StructuredOutput/SchemaFactoryTest.php
@@ -5,9 +5,9 @@
 namespace PhpLlm\LlmChain\Tests\StructuredOutput;
 
 use PhpLlm\LlmChain\StructuredOutput\SchemaFactory;
-use PhpLlm\LlmChain\Tests\StructuredOutput\Data\MathReasoning;
-use PhpLlm\LlmChain\Tests\StructuredOutput\Data\Step;
-use PhpLlm\LlmChain\Tests\StructuredOutput\Data\User;
+use PhpLlm\LlmChain\Tests\Fixture\StructuredOutput\MathReasoning;
+use PhpLlm\LlmChain\Tests\Fixture\StructuredOutput\Step;
+use PhpLlm\LlmChain\Tests\Fixture\StructuredOutput\User;
 use PHPUnit\Framework\Attributes\CoversClass;
 use PHPUnit\Framework\Attributes\Test;
 use PHPUnit\Framework\TestCase;