diff --git a/aider/models.py b/aider/models.py
index 8ab4eb8c9..5a42f9e8f 100644
--- a/aider/models.py
+++ b/aider/models.py
@@ -496,6 +496,8 @@ MODEL_SETTINGS = [
         "openai/o1-preview",
         "diff",
         weak_model_name="openai/gpt-4o-mini",
+        junior_model_name="openai/gpt-4o",
+        junior_edit_format="junior-diff",
         use_repo_map=True,
         reminder="user",
         use_system_prompt=False,
@@ -530,6 +532,8 @@ MODEL_SETTINGS = [
         "openrouter/openai/o1-preview",
         "diff",
         weak_model_name="openrouter/openai/gpt-4o-mini",
+        junior_model_name="openrouter/openai/gpt-4o",
+        junior_edit_format="junior-diff",
         use_repo_map=True,
         reminder="user",
         use_system_prompt=False,
diff --git a/benchmark/benchmark.py b/benchmark/benchmark.py
index 43c6595ef..0f5f1b14d 100755
--- a/benchmark/benchmark.py
+++ b/benchmark/benchmark.py
@@ -378,7 +378,7 @@ def summarize_results(dirname):
         res.syntax_errors += results.get("syntax_errors", 0)
         res.indentation_errors += results.get("indentation_errors", 0)
 
-        for key in "model edit_format commit_hash".split():
+        for key in "model edit_format commit_hash junior_model junior_edit_format".split():
             val = results.get(key)
             if val:
                 variants[key].add(val)
@@ -679,8 +679,8 @@ def run_test_real(
         testcase=testdir.name,
         model=main_model.name,
         edit_format=edit_format,
-        junior_model=junior_model,
-        junior_edit_format=junior_edit_format,
+        junior_model=main_model.junior_model.name if main_model.junior_model else None,
+        junior_edit_format=main_model.junior_edit_format,
         tests_outcomes=test_outcomes,
         cost=coder.total_cost,
         duration=dur,