diff --git a/aider/coders/wholefile_coder.py b/aider/coders/wholefile_coder.py
index 9e74097e8..632f49fe8 100644
--- a/aider/coders/wholefile_coder.py
+++ b/aider/coders/wholefile_coder.py
@@ -44,7 +44,7 @@ class WholeFileCoder(Coder):
                     full_path = (Path(self.root) / fname).absolute()
 
                     if mode == "diff" and full_path.exists():
-                        orig_lines = full_path.readlines()
+                        orig_lines = full_path.read_text().splitlines()
 
                         show_diff = diffs.diff_partial_update(
                             orig_lines,
@@ -93,7 +93,7 @@ class WholeFileCoder(Coder):
                 full_path = (Path(self.root) / fname).absolute()
 
                 if mode == "diff" and full_path.exists():
-                    orig_lines = full_path.readlines()
+                    orig_lines = full_path.read_text.splitlines()
 
                     show_diff = diffs.diff_partial_update(
                         orig_lines,
diff --git a/aider/coders/wholefile_prompts.py b/aider/coders/wholefile_prompts.py
index 2882d4dcb..eaf1f3e9b 100644
--- a/aider/coders/wholefile_prompts.py
+++ b/aider/coders/wholefile_prompts.py
@@ -17,17 +17,19 @@ Once you understand the request you MUST:
     system_reminder = """
 To return code you MUST use this *file listing* format:
 
-exact/path/to/filename.js
+path/to/filename.js
 ```javascript
-// file content goes in the
+// entire file content goes in the
 // triple backticked fenced block
 ```
 
-Every *file listing* must start with the full path!
-Every *file listing* must be fenced w/triple backticks with the correct code language.
+Every *file listing* MUST use this format:
+- First line: the filename with any required path!
+- Second line: opening triple backtick fence with the correct code language.
+- Final line: closing triple backtick fence.
 
 To suggest changes to a file you MUST return a *file listing* that contains the entire content of the file.
-Create a new file you MUST return a *file listing* which includes an appropriate path/filename.
+Create a new file you MUST return a *file listing* which includes an appropriate filename, including any required path.
 """
 
     files_content_prefix = "Here is the current content of the files:\n"
diff --git a/scripts/benchmark.py b/scripts/benchmark.py
index 19d7c7c08..e5ef0fcca 100644
--- a/scripts/benchmark.py
+++ b/scripts/benchmark.py
@@ -116,6 +116,11 @@ def main():
             projected_cost = avg_cost * total_tests
             dump(projected_cost)
 
+            print(
+                f"Cost: ${avg_cost:.4f} average, ${total_cost:.2f} total,"
+                f" ${projected_cost:.2f} projected"
+            )
+
             duration += results["duration"]
             avg_duration = duration / completed_tests
             dump(avg_duration)