From 9edb32ae01aab84386130e2c489bcef1a3e6c8bf Mon Sep 17 00:00:00 2001
From: nightcityblade <nightcityblade@gmail.com>
Date: Tue, 30 Jun 2026 23:16:37 +0800
Subject: [PATCH] fix: handle bare dict in construct_type

---
 src/openai/_models.py | 3 ++-
 tests/test_models.py  | 6 ++++++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/openai/_models.py b/src/openai/_models.py
index 5cca20c6f9..d249abfc0a 100644
--- a/src/openai/_models.py
+++ b/src/openai/_models.py
@@ -577,7 +577,8 @@ def construct_type(*, value: object, type_: object, metadata: Optional[List[Any]
         if not is_mapping(value):
             return value
 
-        _, items_type = get_args(type_)  # Dict[_, items_type]
+        args = get_args(type_)
+        items_type = args[1] if len(args) >= 2 else object
         return {key: construct_type(value=item, type_=items_type) for key, item in value.items()}
 
     if (
diff --git a/tests/test_models.py b/tests/test_models.py
index 588869ee35..e0191f4739 100644
--- a/tests/test_models.py
+++ b/tests/test_models.py
@@ -961,3 +961,9 @@ def __getattr__(self, attr: str) -> Item: ...
     assert model.a.prop == 1
     assert isinstance(model.a, Item)
     assert model.other == "foo"
+
+
+def test_construct_type_with_bare_dict() -> None:
+    value = {"key": "value"}
+
+    assert construct_type(value=value, type_=dict) == value