diff --git a/aisuite/framework/chat_completion_response.py b/aisuite/framework/chat_completion_response.py
index ef13fc2c..5e985ea1 100644
--- a/aisuite/framework/chat_completion_response.py
+++ b/aisuite/framework/chat_completion_response.py
@@ -6,3 +6,20 @@ class ChatCompletionResponse:
 
     def __init__(self):
         self.choices = [Choice()]  # Adjust the range as needed for more choices
+
+    def __repr_name__(self) -> str:
+        """Name of the instance's class, used in __repr__."""
+        return self.__class__.__name__
+
+    def __repr_args__(self):
+        attrs_names = self.__slots__ if hasattr(self, '__slots__') else None
+        if not attrs_names and hasattr(self, '__dict__'):
+            attrs_names = self.__dict__.keys()
+        attrs = ((s, getattr(self, s)) for s in attrs_names)
+        return [(a, v) for a, v in attrs]
+
+    def __repr_str__(self, join_str: str) -> str:
+        return join_str.join(repr(v) if a is None else f'{a}={v!r}' for a, v in self.__repr_args__())
+
+    def __repr__(self):
+        return f'{self.__repr_name__()}({self.__repr_str__(", ")})'
diff --git a/aisuite/framework/choice.py b/aisuite/framework/choice.py
index 38d128b3..92a0a510 100644
--- a/aisuite/framework/choice.py
+++ b/aisuite/framework/choice.py
@@ -2,7 +2,8 @@
 from typing import Literal, Optional, List
 
 
-class Choice:
+class Choice():
+
     def __init__(self):
         self.finish_reason: Optional[Literal["stop", "tool_calls"]] = None
         self.message = Message(
@@ -13,3 +14,20 @@ def __init__(self):
             reasoning_content=None,
         )
         self.intermediate_messages: List[Message] = []
+
+    def __repr_name__(self) -> str:
+        """Name of the instance's class, used in __repr__."""
+        return self.__class__.__name__
+
+    def __repr_args__(self):
+        attrs_names = self.__slots__ if hasattr(self, '__slots__') else None
+        if not attrs_names and hasattr(self, '__dict__'):
+            attrs_names = self.__dict__.keys()
+        attrs = ((s, getattr(self, s)) for s in attrs_names)
+        return [(a, v) for a, v in attrs]
+
+    def __repr_str__(self, join_str: str) -> str:
+        return join_str.join(repr(v) if a is None else f'{a}={v!r}' for a, v in self.__repr_args__())
+
+    def __repr__(self):
+        return f'{self.__repr_name__()}({self.__repr_str__(", ")})'