diff --git a/llama_cpp/llama.py b/llama_cpp/llama.py
index 362ebd9..6c4e153 100644
--- a/llama_cpp/llama.py
+++ b/llama_cpp/llama.py
@@ -446,10 +446,10 @@ class Llama:
     def generate(
         self,
         tokens: Sequence[llama_cpp.llama_token],
-        top_k: int,
-        top_p: float,
-        temp: float,
-        repeat_penalty: float,
+        top_k: int = 40,
+        top_p: float = 0.95,
+        temp: float = 0.80,
+        repeat_penalty: float = 1.1,
         reset: bool = True,
         frequency_penalty: float = 0.0,
         presence_penalty: float = 0.0,