diff --git a/llama_cpp/llama.py b/llama_cpp/llama.py
index 2d405b7..7a152fd 100644
--- a/llama_cpp/llama.py
+++ b/llama_cpp/llama.py
@@ -198,6 +198,8 @@ class Llama:
             sorted=sorted,
         )
         self._candidates = candidates
+        self._token_nl = Llama.token_nl()
+        self._token_eos = Llama.token_eos()
 
     def tokenize(self, text: bytes, add_bos: bool = True) -> List[int]:
         """Tokenize a string.
@@ -327,7 +329,7 @@ class Llama:
             else last_n_tokens_size
         )
         logits = self.eval_logits[-1]
-        nl_logit = logits[Llama.token_nl()]
+        nl_logit = logits[self._token_nl]
         candidates = self._candidates
         for i, logit in enumerate(logits):
             candidates.data[i].id = llama_cpp.llama_token(i)
@@ -351,7 +353,7 @@ class Llama:
             alpha_presence=presence_penalty,
         )
         if not penalize_nl:
-            candidates.data[Llama.token_nl()].logit = llama_cpp.c_float(nl_logit)
+            candidates.data[self._token_nl].logit = llama_cpp.c_float(nl_logit)
         if temp.value == 0.0:
             return llama_cpp.llama_sample_token_greedy(
                 ctx=self.ctx,
@@ -688,7 +690,7 @@ class Llama:
             presence_penalty=presence_penalty,
             repeat_penalty=repeat_penalty,
         ):
-            if token == Llama.token_eos():
+            if token == self._token_eos:
                 text = self.detokenize(completion_tokens)
                 finish_reason = "stop"
                 break