diff --git a/Mindforge.API/Services/FlashcardService.cs b/Mindforge.API/Services/FlashcardService.cs
index bde6744..5e1b0fd 100644
--- a/Mindforge.API/Services/FlashcardService.cs
+++ b/Mindforge.API/Services/FlashcardService.cs
@@ -193,9 +193,10 @@ namespace Mindforge.API.Services
             var rawResult = await _agentService.ProcessRequestAsync(systemPrompt, userPrompt);
             var cards = ParseFlashcardsFromJson(rawResult);
 
-            if (cards.Count < amount)
+            var minimumAcceptable = (int)Math.Ceiling(amount * 0.75);
+            if (cards.Count < minimumAcceptable)
             {
-                throw new Exception($"Quantidade insuficiente de flashcards gerados para {filePath}. Esperado: {amount}. Recebido: {cards.Count}.");
+                throw new Exception($"Quantidade insuficiente de flashcards gerados para {filePath}. Esperado: {amount}. Minimo aceitavel: {minimumAcceptable}. Recebido: {cards.Count}.");
             }
 
             if (cards.Count > amount)