diff --git a/aider/commands.py b/aider/commands.py
index c2dbec477..c0ce63e60 100644
--- a/aider/commands.py
+++ b/aider/commands.py
@@ -1158,6 +1158,21 @@ class Commands:
         settings = format_settings(self.parser, self.args)
         self.io.tool_output(settings)
 
+    def cmd_copy(self, args):
+        "Copy the last assistant message to the clipboard"
+        all_messages = self.coder.done_messages + self.coder.cur_messages
+        assistant_messages = [msg for msg in reversed(all_messages) if msg['role'] == 'assistant']
+        
+        if not assistant_messages:
+            self.io.tool_error("No assistant messages found to copy.")
+            return
+        
+        last_assistant_message = assistant_messages[0]['content']
+        pyperclip.copy(last_assistant_message)
+        
+        preview = last_assistant_message[:50] + "..." if len(last_assistant_message) > 50 else last_assistant_message
+        self.io.tool_output(f"Copied last assistant message to clipboard. Preview: {preview}")
+
     def cmd_report(self, args):
         "Report a problem by opening a GitHub Issue"
         from aider.report import report_github_issue