diff --git a/src/platform/src/Bridge/Gemini/Gemini/ResultConverter.php b/src/platform/src/Bridge/Gemini/Gemini/ResultConverter.php
index d69999378..89574d16d 100644
--- a/src/platform/src/Bridge/Gemini/Gemini/ResultConverter.php
+++ b/src/platform/src/Bridge/Gemini/Gemini/ResultConverter.php
@@ -146,11 +146,20 @@ private function convertChoice(array $choice): ToolCallResult|TextResult|BinaryR
             }
         }
 
+        // Fallback for multi-part text responses (e.g., thinking + response)
+        if ('' === $content) {
+            foreach ($contentParts as $contentPart) {
+                if (isset($contentPart['text'])) {
+                    $content .= $contentPart['text'];
+                }
+            }
+        }
+
         if ('' !== $content) {
             return new TextResult($content);
         }
 
-        throw new RuntimeException('Code execution failed.');
+        throw new RuntimeException('Response does not contain any text content.');
     }
 
     /**
diff --git a/src/platform/tests/Bridge/Gemini/Gemini/ResultConverterTest.php b/src/platform/tests/Bridge/Gemini/Gemini/ResultConverterTest.php
index 846d115c9..d8ff47d18 100644
--- a/src/platform/tests/Bridge/Gemini/Gemini/ResultConverterTest.php
+++ b/src/platform/tests/Bridge/Gemini/Gemini/ResultConverterTest.php
@@ -16,6 +16,7 @@
 use Symfony\AI\Platform\Exception\RuntimeException;
 use Symfony\AI\Platform\Result\BinaryResult;
 use Symfony\AI\Platform\Result\RawHttpResult;
+use Symfony\AI\Platform\Result\TextResult;
 use Symfony\AI\Platform\Result\ToolCall;
 use Symfony\AI\Platform\Result\ToolCallResult;
 use Symfony\Contracts\HttpClient\ResponseInterface;
@@ -132,4 +133,36 @@ public function testConvertsInlineDataWithoutMimeTypeToBinaryResult()
         $this->assertSame('base64EncodedData', $result->getContent());
         $this->assertNull($result->getMimeType());
     }
+
+    public function testConvertsMultiPartThinkingResponseToTextResult()
+    {
+        $converter = new ResultConverter();
+        $httpResponse = self::createMock(ResponseInterface::class);
+        $httpResponse->method('getStatusCode')->willReturn(200);
+        $httpResponse->method('toArray')->willReturn([
+            'candidates' => [
+                [
+                    'content' => [
+                        'parts' => [
+                            [
+                                'text' => '<analysis>This is the thinking process...</analysis>',
+                                'thoughtSignature' => 'base64-encoded-signature...',
+                            ],
+                            [
+                                'text' => '```json\n{"result": "actual response"}\n```',
+                            ],
+                        ],
+                    ],
+                    'finishReason' => 'STOP',
+                ],
+            ],
+        ]);
+
+        $result = $converter->convert(new RawHttpResult($httpResponse));
+        $this->assertInstanceOf(TextResult::class, $result);
+        $this->assertSame(
+            '<analysis>This is the thinking process...</analysis>```json\n{"result": "actual response"}\n```',
+            $result->getContent()
+        );
+    }
 }