diff --git a/app/Http/Livewire/Chat/ShowConfiguracionChat.php b/app/Http/Livewire/Chat/ShowConfiguracionChat.php
index acb4ff4..11781ef 100755
--- a/app/Http/Livewire/Chat/ShowConfiguracionChat.php
+++ b/app/Http/Livewire/Chat/ShowConfiguracionChat.php
@@ -107,10 +107,10 @@ class ShowConfiguracionChat extends Component
                 ->withHeaders(['Content-Type' => 'application/json'])
                 ->post("{$url}?key={$key}", [
                     'contents'         => [['parts' => [['text' => 'Responde solo "ok"']]]],
-                    'generationConfig' => array_merge(
-                        ['maxOutputTokens' => 5, 'temperature' => 0],
-                        preg_match('/gemini-(2\.5|3[\.\d]*)/', $model) ? ['thinkingConfig' => ['thinkingBudget' => 0]] : []
-                    ),
+                    'generationConfig' => ['maxOutputTokens' => 5, 'temperature' => 0],
+                    ...(preg_match('/gemini-(2\.5|3[\.\d]*)/', $model)
+                        ? ['thinkingConfig' => ['thinkingBudget' => 0]]
+                        : []),
                 ]);
 
             $ms   = (int) ((microtime(true) - $inicio) * 1000);
diff --git a/app/Services/GeminiIntentService.php b/app/Services/GeminiIntentService.php
index 1229bea..722f3fc 100644
--- a/app/Services/GeminiIntentService.php
+++ b/app/Services/GeminiIntentService.php
@@ -21,14 +21,17 @@ class GeminiIntentService
         $this->apiUrl = "https://generativelanguage.googleapis.com/v1beta/models/{$this->model}:generateContent";
     }
 
-    private function generationConfig(array $extra = []): array
+    private function buildRequest(array $contents, array $genConfig = []): array
     {
-        $config = array_merge(['temperature' => 0.1, 'maxOutputTokens' => 100], $extra);
-        // 2.5+ models require thinkingConfig to avoid response format issues
+        $body = [
+            'contents'         => $contents,
+            'generationConfig' => array_merge(['temperature' => 0.1, 'maxOutputTokens' => 100], $genConfig),
+        ];
+        // thinkingConfig goes at root level (NOT inside generationConfig) for 2.5+ models
         if (preg_match('/gemini-(2\.5|3[\.\d]*)/', $this->model)) {
-            $config['thinkingConfig'] = ['thinkingBudget' => 0];
+            $body['thinkingConfig'] = ['thinkingBudget' => 0];
         }
-        return $config;
+        return $body;
     }
 
     /**
@@ -47,10 +50,9 @@ class GeminiIntentService
         try {
             $response = Http::withHeaders(['Content-Type' => 'application/json'])
                 ->timeout(8)
-                ->post("{$this->apiUrl}?key={$this->apiKey}", [
-                    'contents' => [['parts' => [['text' => $prompt]]]],
-                    'generationConfig' => $this->generationConfig(),
-                ]);
+                ->post("{$this->apiUrl}?key={$this->apiKey}",
+                    $this->buildRequest([['parts' => [['text' => $prompt]]]])
+                );
 
             $tiempoMs = (int) ((microtime(true) - $inicio) * 1000);
 
diff --git a/app/Services/GeminiVisionService.php b/app/Services/GeminiVisionService.php
index c2e2bc0..407fbcf 100644
--- a/app/Services/GeminiVisionService.php
+++ b/app/Services/GeminiVisionService.php
@@ -21,13 +21,16 @@ class GeminiVisionService
         $this->apiUrl = "https://generativelanguage.googleapis.com/v1beta/models/{$this->model}:generateContent";
     }
 
-    private function generationConfig(array $extra = []): array
+    private function buildRequest(array $contents, array $genConfig = []): array
     {
-        $config = array_merge(['temperature' => 0.1, 'maxOutputTokens' => 200], $extra);
+        $body = [
+            'contents'         => $contents,
+            'generationConfig' => array_merge(['temperature' => 0.1, 'maxOutputTokens' => 200], $genConfig),
+        ];
         if (preg_match('/gemini-(2\.5|3[\.\d]*)/', $this->model)) {
-            $config['thinkingConfig'] = ['thinkingBudget' => 0];
+            $body['thinkingConfig'] = ['thinkingBudget' => 0];
         }
-        return $config;
+        return $body;
     }
 
     /**
@@ -48,17 +51,16 @@ class GeminiVisionService
         $inicio = microtime(true);
 
         try {
+            $contents = [[
+                'parts' => [
+                    ['text' => $prompt],
+                    ['inline_data' => ['mime_type' => $mimeType, 'data' => $base64]],
+                ],
+            ]];
+
             $response = Http::withHeaders(['Content-Type' => 'application/json'])
                 ->timeout(15)
-                ->post("{$this->apiUrl}?key={$this->apiKey}", [
-                    'contents' => [[
-                        'parts' => [
-                            ['text' => $prompt],
-                            ['inline_data' => ['mime_type' => $mimeType, 'data' => $base64]],
-                        ],
-                    ]],
-                    'generationConfig' => $this->generationConfig(),
-                ]);
+                ->post("{$this->apiUrl}?key={$this->apiKey}", $this->buildRequest($contents));
 
             $tiempoMs = (int) ((microtime(true) - $inicio) * 1000);