chore: reset and remove unsupported parameters in o1 model (#945)

Co-authored-by: Wendong-Fan <133094783+Wendong-Fan@users.noreply.github.com>

camel/models/openai_model.py

@@ -93,6 +93,22 @@ def run(
                 `ChatCompletion` in the non-stream mode, or
                 `Stream[ChatCompletionChunk]` in the stream mode.
         """
+        # o1-preview and o1-mini have Beta limitations
+        # reference: https://platform.openai.com/docs/guides/reasoning
+        if self.model_type in [ModelType.O1_MINI, ModelType.O1_PREVIEW]:
+            # Remove system message that is not supported in o1 model.
+            messages = [msg for msg in messages if msg.get("role") != "system"]
+
+            # Remove unsupported parameters and reset the fixed parameters
+            del self.model_config_dict["stream"]
+            del self.model_config_dict["tools"]
+            del self.model_config_dict["tool_choice"]
+            self.model_config_dict["temperature"] = 1.0
+            self.model_config_dict["top_p"] = 1.0
+            self.model_config_dict["n"] = 1.0
+            self.model_config_dict["presence_penalty"] = 0.0
+            self.model_config_dict["frequency_penalty"] = 0.0
+
         response = self._client.chat.completions.create(
             messages=messages,
             model=self.model_type.value,

camel/utils/token_counting.py

@@ -193,8 +193,14 @@ def get_model_encoding(value_for_tiktoken: str):
     try:
         encoding = tiktoken.encoding_for_model(value_for_tiktoken)
     except KeyError:
-        print("Model not found. Using cl100k_base encoding.")
-        encoding = tiktoken.get_encoding("cl100k_base")
+        if value_for_tiktoken in [
+            ModelType.O1_MINI.value,
+            ModelType.O1_PREVIEW.value,
+        ]:
+            encoding = tiktoken.get_encoding("o200k_base")
+        else:
+            print("Model not found. Using cl100k_base encoding.")
+            encoding = tiktoken.get_encoding("cl100k_base")
     return encoding