diff --git a/aider/commands.py b/aider/commands.py
index 5cb346585..73e13d511 100644
--- a/aider/commands.py
+++ b/aider/commands.py
@@ -918,11 +918,16 @@ class Commands:
         if combined_output is None:
             return
 
-        # tokenize the output, and ask "Add xx k-tokens of command output to the chat?" # ai!
+        # Calculate token count of output
+        token_count = self.coder.main_model.token_count(combined_output)
+        k_tokens = token_count / 1000
+        
         if add_on_nonzero_exit:
             add = exit_status != 0
         else:
-            add = self.io.confirm_ask("Add command output to the chat?")
+            add = self.io.confirm_ask(
+                f"Add {k_tokens:.1f}k tokens of command output to the chat?"
+            )
 
         if add:
             num_lines = len(combined_output.strip().splitlines())