diff --git a/app/Http/Livewire/Chat/ShowConfiguracionChat.php b/app/Http/Livewire/Chat/ShowConfiguracionChat.php
index dfe885b..acb4ff4 100755
--- a/app/Http/Livewire/Chat/ShowConfiguracionChat.php
+++ b/app/Http/Livewire/Chat/ShowConfiguracionChat.php
@@ -107,7 +107,10 @@ class ShowConfiguracionChat extends Component
                 ->withHeaders(['Content-Type' => 'application/json'])
                 ->post("{$url}?key={$key}", [
                     'contents'         => [['parts' => [['text' => 'Responde solo "ok"']]]],
-                    'generationConfig' => ['maxOutputTokens' => 5, 'temperature' => 0],
+                    'generationConfig' => array_merge(
+                        ['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 4a1f319..1229bea 100644
--- a/app/Services/GeminiIntentService.php
+++ b/app/Services/GeminiIntentService.php
@@ -12,11 +12,23 @@ class GeminiIntentService
     private string $apiKey;
     private string $apiUrl;
 
+    private string $model;
+
     public function __construct()
     {
         $this->apiKey = ChatConfig::get('gemini_api_key', '');
-        $model        = ChatConfig::get('gemini_model', 'gemini-2.0-flash');
-        $this->apiUrl = "https://generativelanguage.googleapis.com/v1beta/models/{$model}:generateContent";
+        $this->model  = ChatConfig::get('gemini_model', 'gemini-2.0-flash');
+        $this->apiUrl = "https://generativelanguage.googleapis.com/v1beta/models/{$this->model}:generateContent";
+    }
+
+    private function generationConfig(array $extra = []): array
+    {
+        $config = array_merge(['temperature' => 0.1, 'maxOutputTokens' => 100], $extra);
+        // 2.5+ models require thinkingConfig to avoid response format issues
+        if (preg_match('/gemini-(2\.5|3[\.\d]*)/', $this->model)) {
+            $config['thinkingConfig'] = ['thinkingBudget' => 0];
+        }
+        return $config;
     }
 
     /**
@@ -37,10 +49,7 @@ class GeminiIntentService
                 ->timeout(8)
                 ->post("{$this->apiUrl}?key={$this->apiKey}", [
                     'contents' => [['parts' => [['text' => $prompt]]]],
-                    'generationConfig' => [
-                        'temperature'     => 0.1,
-                        'maxOutputTokens' => 100,
-                    ],
+                    'generationConfig' => $this->generationConfig(),
                 ]);
 
             $tiempoMs = (int) ((microtime(true) - $inicio) * 1000);
diff --git a/app/Services/GeminiVisionService.php b/app/Services/GeminiVisionService.php
index 8811825..c2e2bc0 100644
--- a/app/Services/GeminiVisionService.php
+++ b/app/Services/GeminiVisionService.php
@@ -12,11 +12,22 @@ class GeminiVisionService
     private string $apiKey;
     private string $apiUrl;
 
+    private string $model;
+
     public function __construct()
     {
         $this->apiKey = ChatConfig::get('gemini_api_key', '');
-        $model        = ChatConfig::get('gemini_model', 'gemini-2.0-flash');
-        $this->apiUrl = "https://generativelanguage.googleapis.com/v1beta/models/{$model}:generateContent";
+        $this->model  = ChatConfig::get('gemini_model', 'gemini-2.0-flash');
+        $this->apiUrl = "https://generativelanguage.googleapis.com/v1beta/models/{$this->model}:generateContent";
+    }
+
+    private function generationConfig(array $extra = []): array
+    {
+        $config = array_merge(['temperature' => 0.1, 'maxOutputTokens' => 200], $extra);
+        if (preg_match('/gemini-(2\.5|3[\.\d]*)/', $this->model)) {
+            $config['thinkingConfig'] = ['thinkingBudget' => 0];
+        }
+        return $config;
     }
 
     /**
@@ -46,10 +57,7 @@ class GeminiVisionService
                             ['inline_data' => ['mime_type' => $mimeType, 'data' => $base64]],
                         ],
                     ]],
-                    'generationConfig' => [
-                        'temperature'     => 0.1,
-                        'maxOutputTokens' => 200,
-                    ],
+                    'generationConfig' => $this->generationConfig(),
                 ]);
 
             $tiempoMs = (int) ((microtime(true) - $inicio) * 1000);