diff --git a/src/services/ai.ts b/src/services/ai.ts
index 61f602a..1e04f76 100644
--- a/src/services/ai.ts
+++ b/src/services/ai.ts
@@ -103,7 +103,22 @@ export async function callAI(
   const content = data.choices?.[0]?.message?.content || null
 
   if (!content) throw new Error('Respuesta vacía del proveedor de IA')
-  return content
+  return stripThinkTags(content)
+}
+
+/**
+ * Elimina bloques de razonamiento interno del modelo (DeepSeek, etc.).
+ * Ej: "...." o "..."
+ */
+function stripThinkTags(text: string): string {
+  return text
+    .replace(/```thinking[\s\S]*?```/gi, '')
+    .replace(/```reasoning[\s\S]*?```/gi, '')
+    .replace(/<think>[\s\S]*?<\/think>/gi, '')
+    .replace(/<thinking>[\s\S]*?<\/thinking>/gi, '')
+    .replace(/^.*?\*\*Respuesta:/s, '')
+    .replace(/^.*?\*\*Final Answer:/s, '')
+    .trim()
 }
 
 export async function chatWithAI(