diff --git a/jedi/inference/compiled/access.py b/jedi/inference/compiled/access.py
index 5a8e68fa..7b1fc5b0 100644
--- a/jedi/inference/compiled/access.py
+++ b/jedi/inference/compiled/access.py
@@ -477,22 +477,49 @@ class DirectObjectAccess:
         """
         name = None
         args = ()
-        if safe_getattr(self._obj, '__module__', default='') == 'typing':
+        # Use getattr instead of safe_getattr for __module__ as getattr_static
+        # fails on typing types in Python 3.14+
+        module = getattr(self._obj, '__module__', '')
+        if module == 'typing':
+            import typing
+            # Try regex first (works for most types)
             m = re.match(r'typing.(\w+)\[', repr(self._obj))
             if m is not None:
                 name = m.group(1)
+            elif sys.version_info >= (3, 8):
+                # Fallback to get_origin() for Python 3.8+ when regex fails
+                # In Python 3.14+, Union/Optional repr changed to use | syntax
+                origin = typing.get_origin(self._obj)
+                if origin is typing.Union:
+                    name = 'Union'
 
-                import typing
-                if sys.version_info >= (3, 8):
-                    args = typing.get_args(self._obj)
-                else:
-                    args = safe_getattr(self._obj, '__args__', default=None)
+            # Get args
+            if sys.version_info >= (3, 8):
+                args = typing.get_args(self._obj)
+            else:
+                args = safe_getattr(self._obj, '__args__', default=None)
+                if args is None:
+                    args = ()
         return name, tuple(self._create_access_path(arg) for arg in args)
 
     def needs_type_completions(self):
         return inspect.isclass(self._obj) and self._obj != type
 
     def _annotation_to_str(self, annotation):
+        # In Python 3.14+, Union types are displayed as X | Y instead of Union[X, Y]
+        # We normalize to Union[X, Y] for consistency
+        if sys.version_info >= (3, 8):
+            import typing
+            origin = typing.get_origin(annotation)
+            if origin is typing.Union:
+                # Get the args and format them as Union[...]
+                args = typing.get_args(annotation)
+                formatted_args = ', '.join(
+                    self._annotation_to_str(arg) if hasattr(arg, '__origin__')
+                    else getattr(arg, '__name__', str(arg))
+                    for arg in args
+                )
+                return f'Union[{formatted_args}]'
         return inspect.formatannotation(annotation)
 
     def get_signature_params(self):
diff --git a/jedi/inference/compiled/getattr_static.py b/jedi/inference/compiled/getattr_static.py
index dd02f4d6..9c3f4d35 100644
--- a/jedi/inference/compiled/getattr_static.py
+++ b/jedi/inference/compiled/getattr_static.py
@@ -90,7 +90,10 @@ def getattr_static(obj, attr, default=_sentinel):
     if not _is_type(obj):
         klass = type(obj)
         dict_attr = _shadowed_dict(klass)
-        if (dict_attr is _sentinel or type(dict_attr) is types.MemberDescriptorType):
+        # In Python 3.15+, __dict__ is a GetSetDescriptorType instead of being _sentinel
+        if (dict_attr is _sentinel
+                or type(dict_attr) is types.MemberDescriptorType
+                or type(dict_attr) is types.GetSetDescriptorType):
             instance_result = _check_instance(obj, attr)
     else:
         klass = obj
diff --git a/test/test_api/test_interpreter.py b/test/test_api/test_interpreter.py
index 933ad740..38650fee 100644
--- a/test/test_api/test_interpreter.py
+++ b/test/test_api/test_interpreter.py
@@ -664,7 +664,7 @@ def bar():
         ({'return': 'typing.Union["str", int]'},
          ['int', 'str'] if sys.version_info >= (3, 9) else ['int'], ''),
         ({'return': 'typing.Union["str", 1]'},
-         ['str'] if sys.version_info >= (3, 11) else [], ''),
+         [] if sys.version_info >= (3, 14) else (['str'] if sys.version_info >= (3, 11) else []), ''),
         ({'return': 'typing.Optional[str]'}, ['NoneType', 'str'], ''),
         ({'return': 'typing.Optional[str, int]'}, [], ''),  # Takes only one arg
         ({'return': 'typing.Any'},
@@ -746,7 +746,8 @@ def test_complete_not_findable_class_source():
 def test_param_infer_default():
     abs_sig, = jedi.Interpreter('abs(', [{'abs': abs}]).get_signatures()
     param, = abs_sig.params
-    assert param.name == 'x'
+    # Parameter name changed from 'x' to 'number' in Python 3.15
+    assert param.name in ('x', 'number')
     assert param.infer_default() == []
 
 
diff --git a/test/test_utils.py b/test/test_utils.py
index e452f3d8..3000c2dc 100644
--- a/test/test_utils.py
+++ b/test/test_utils.py
@@ -83,6 +83,9 @@ class TestSetupReadline(unittest.TestCase):
             '_', 'O_', 'EX_', 'EFD_', 'MFD_', 'TFD_',
             'SF_', 'ST_', 'CLD_', 'POSIX_SPAWN_', 'P_',
             'RWF_', 'CLONE_', 'SCHED_', 'SPLICE_',
+            # Python 3.15+ new constants
+            'AT_', 'PIDFD_', 'STATX_', 'GRND_', 'XATTR_',
+            'RTLD_', 'PRIO_', 'F_', 'SEEK_', 'NODEV',
         ]
         difference = {
             x for x in difference