diff --git a/aider/coders/base_coder.py b/aider/coders/base_coder.py
index 1236a1a73..2212ea9b6 100755
--- a/aider/coders/base_coder.py
+++ b/aider/coders/base_coder.py
@@ -52,6 +52,7 @@ class Coder:
     num_malformed_responses = 0
     last_keyboard_interrupt = None
     max_apply_update_errors = 3
+    edit_format = None
 
     @classmethod
     def create(
@@ -149,7 +150,7 @@ class Coder:
 
         self.main_model = main_model
 
-        self.io.tool_output(f"Model: {main_model.name}")
+        self.io.tool_output(f"Model: {main_model.name} using {self.edit_format} edit format")
 
         self.show_diffs = show_diffs
 
diff --git a/aider/coders/editblock_coder.py b/aider/coders/editblock_coder.py
index 406bf5833..fe367a173 100644
--- a/aider/coders/editblock_coder.py
+++ b/aider/coders/editblock_coder.py
@@ -9,6 +9,8 @@ from .editblock_prompts import EditBlockPrompts
 
 
 class EditBlockCoder(Coder):
+    edit_format = "diff"
+
     def __init__(self, *args, **kwargs):
         self.gpt_prompts = EditBlockPrompts()
         super().__init__(*args, **kwargs)
diff --git a/aider/coders/wholefile_coder.py b/aider/coders/wholefile_coder.py
index 6bd7d4634..7c0975cb7 100644
--- a/aider/coders/wholefile_coder.py
+++ b/aider/coders/wholefile_coder.py
@@ -8,6 +8,8 @@ from .wholefile_prompts import WholeFilePrompts
 
 
 class WholeFileCoder(Coder):
+    edit_format = "whole"
+
     def __init__(self, *args, **kwargs):
         self.gpt_prompts = WholeFilePrompts()
         super().__init__(*args, **kwargs)