diff --git a/src/platform/tests/Bridge/DockerModelRunner/Completions/ResultConverterTest.php b/src/platform/tests/Bridge/DockerModelRunner/Completions/ResultConverterTest.php
index 38c9c37e2..73d683434 100644
--- a/src/platform/tests/Bridge/DockerModelRunner/Completions/ResultConverterTest.php
+++ b/src/platform/tests/Bridge/DockerModelRunner/Completions/ResultConverterTest.php
@@ -13,11 +13,16 @@
 
 use PHPUnit\Framework\Attributes\CoversClass;
 use PHPUnit\Framework\Attributes\Small;
+use PHPUnit\Framework\Attributes\TestWith;
 use PHPUnit\Framework\Attributes\UsesClass;
 use PHPUnit\Framework\TestCase;
 use Symfony\AI\Platform\Bridge\DockerModelRunner\Completions;
 use Symfony\AI\Platform\Bridge\DockerModelRunner\Completions\ResultConverter;
 use Symfony\AI\Platform\Bridge\OpenAi\Gpt\ResultConverter as OpenAiResultConverter;
+use Symfony\AI\Platform\Exception\ModelNotFoundException;
+use Symfony\AI\Platform\Exception\RuntimeException;
+use Symfony\AI\Platform\Result\RawHttpResult;
+use Symfony\Contracts\HttpClient\ResponseInterface;
 
 #[CoversClass(ResultConverter::class)]
 #[UsesClass(Completions::class)]
@@ -31,4 +36,43 @@ public function testItSupportsCompletionsModel()
 
         $this->assertTrue($converter->supports(new Completions('test-model')));
     }
+
+    #[TestWith(['Model not found'])]
+    #[TestWith(['MODEL NOT FOUND'])]
+    public function testItThrowsModelNotFoundExceptionWhen404WithModelNotFoundMessage(string $message)
+    {
+        $response = $this->createMock(ResponseInterface::class);
+        $response
+            ->method('getStatusCode')
+            ->willReturn(404);
+        $response
+            ->method('getContent')
+            ->with(false)
+            ->willReturn($message);
+
+        $this->expectException(ModelNotFoundException::class);
+        $this->expectExceptionMessage($message);
+
+        (new ResultConverter())->convert(new RawHttpResult($response));
+    }
+
+    public function testItDoesNotThrowModelNotFoundExceptionWhen404WithoutModelNotFoundMessage()
+    {
+        $response = $this->createMock(ResponseInterface::class);
+        $response
+            ->method('getStatusCode')
+            ->willReturn(404);
+        $response
+            ->method('getContent')
+            ->with(false)
+            ->willReturn('Not found');
+        $response
+            ->method('toArray')
+            ->willReturn(['error' => 'some other error']);
+
+        $this->expectException(RuntimeException::class);
+        $this->expectExceptionMessage('Response does not contain choices.');
+
+        (new ResultConverter())->convert(new RawHttpResult($response));
+    }
 }
diff --git a/src/platform/tests/Bridge/DockerModelRunner/Embeddings/ResultConverterTest.php b/src/platform/tests/Bridge/DockerModelRunner/Embeddings/ResultConverterTest.php
index b294532c5..efe737837 100644
--- a/src/platform/tests/Bridge/DockerModelRunner/Embeddings/ResultConverterTest.php
+++ b/src/platform/tests/Bridge/DockerModelRunner/Embeddings/ResultConverterTest.php
@@ -13,10 +13,12 @@
 
 use PHPUnit\Framework\Attributes\CoversClass;
 use PHPUnit\Framework\Attributes\Small;
+use PHPUnit\Framework\Attributes\TestWith;
 use PHPUnit\Framework\Attributes\UsesClass;
 use PHPUnit\Framework\TestCase;
 use Symfony\AI\Platform\Bridge\DockerModelRunner\Embeddings;
 use Symfony\AI\Platform\Bridge\DockerModelRunner\Embeddings\ResultConverter;
+use Symfony\AI\Platform\Exception\ModelNotFoundException;
 use Symfony\AI\Platform\Exception\RuntimeException;
 use Symfony\AI\Platform\Result\RawHttpResult;
 use Symfony\AI\Platform\Result\VectorResult;
@@ -86,4 +88,43 @@ public function testItSupportsEmbeddingsModel()
 
         $this->assertTrue($converter->supports(new Embeddings('test-model')));
     }
+
+    #[TestWith(['Model not found'])]
+    #[TestWith(['MODEL NOT FOUND'])]
+    public function testItThrowsModelNotFoundExceptionWhen404WithModelNotFoundMessage(string $message)
+    {
+        $response = $this->createMock(ResponseInterface::class);
+        $response
+            ->method('getStatusCode')
+            ->willReturn(404);
+        $response
+            ->method('getContent')
+            ->with(false)
+            ->willReturn($message);
+
+        $this->expectException(ModelNotFoundException::class);
+        $this->expectExceptionMessage($message);
+
+        (new ResultConverter())->convert(new RawHttpResult($response));
+    }
+
+    public function testItDoesNotThrowModelNotFoundExceptionWhen404WithoutModelNotFoundMessage()
+    {
+        $response = $this->createMock(ResponseInterface::class);
+        $response
+            ->method('getStatusCode')
+            ->willReturn(404);
+        $response
+            ->method('getContent')
+            ->with(false)
+            ->willReturn('Not found');
+        $response
+            ->method('toArray')
+            ->willReturn(['error' => 'some other error']);
+
+        $this->expectException(RuntimeException::class);
+        $this->expectExceptionMessage('Response does not contain data.');
+
+        (new ResultConverter())->convert(new RawHttpResult($response));
+    }
 }