Make openai cost calculator a static method

Author: whoseoyster

openlayer/llm_monitors.py

@@ -331,8 +331,9 @@ def _split_list(lst: List, n_parts: int) -> List[List]:
             start = end
         return result
 
+    @staticmethod
     def get_cost_estimate(
-        self, num_input_tokens: int, num_output_tokens: int, model: str
+        num_input_tokens: int, num_output_tokens: int, model: str
     ) -> float:
         """Returns the cost estimate for a given model and number of tokens."""
         if model not in constants.OPENAI_COST_PER_TOKEN:

openlayer/version.py

@@ -22,4 +22,5 @@
          data=data,
       )
 """
-__version__ = "0.1.0a24"
+
+__version__ = "0.1.0a25"