diff --git a/backend/open_webui/utils/memory.py b/backend/open_webui/utils/memory.py
index 5a01f4c5f2..3f46b0a233 100644
--- a/backend/open_webui/utils/memory.py
+++ b/backend/open_webui/utils/memory.py
@@ -122,7 +122,7 @@ def search_memory_rows(
 
     def sort_key(memory):
         rank = _path_rank(memory.path, lookup_path) if lookup_path else None
-        return rank if rank is not None else (9, 0), -(memory.updated_at or 0)
+        return rank if rank is not None else (9, 0), -(memory.updated_at or 0), memory.id or ''
 
     return sorted(rows, key=sort_key)[: max(1, min(limit or 20, 100))]
 
@@ -213,10 +213,10 @@ def read_memory_path_rows(
 
     def sort_key(memory):
         if memory.path == lookup_path:
-            return (0, 0, -(memory.updated_at or 0))
+            return (0, 0, -(memory.updated_at or 0), memory.id or '')
         if memory.path and memory.path.startswith(f'{lookup_path}/'):
-            return (1, len(_path_parts(memory.path)), -(memory.updated_at or 0))
-        return (2, -len(_path_parts(memory.path)), -(memory.updated_at or 0))
+            return (1, len(_path_parts(memory.path)), -(memory.updated_at or 0), memory.id or '')
+        return (2, -len(_path_parts(memory.path)), -(memory.updated_at or 0), memory.id or '')
 
     return {
         'path': lookup_path,
@@ -232,7 +232,7 @@ def memory_path_hints(query: str, memories: list, limit: int = 6) -> list[str]:
         return []
 
     hints: list[str] = []
-    for memory in memories or []:
+    for memory in sorted(memories or [], key=lambda item: (item.path or '', item.content or '', item.id or '')):
         path = memory.path
         if not path or path in hints:
             continue
@@ -286,6 +286,13 @@ def model_allows_memory(model: dict | None) -> bool:
     return ((model or {}).get('info', {}).get('meta', {}).get('capabilities') or {}).get('memory', True)
 
 
+def _format_memory_context_section(title: str, memories: list[str]) -> str | None:
+    if not memories:
+        return None
+    ordered = sorted(memories, key=lambda memory: (memory.casefold(), memory))
+    return f'[{title}]\n' + '\n'.join(f'- {memory}' for memory in ordered)
+
+
 async def add_memory_context(request, form_data: dict, user, model: dict | None = None):
     if not model_allows_memory(model):
         return form_data
@@ -319,7 +326,7 @@ async def add_memory_context(request, form_data: dict, user, model: dict | None
     seen_ids = set()
     for memory in sorted(
         [memory for memory in (all_memories or []) if memory.type == 'user'],
-        key=lambda item: (item.path or '', item.updated_at),
+        key=lambda item: (item.path or '', item.updated_at or 0, item.id or ''),
     ):
         seen_ids.add(memory.id)
         sections['user'].append(memory_label(memory))
@@ -360,12 +367,14 @@ async def add_memory_context(request, form_data: dict, user, model: dict | None
             sections[Memories.normalize_memory_type(metadata.get('type'))].append(label)
 
     parts = []
-    if sections['user']:
-        parts.append('[User Memory]\n' + '\n'.join(f'- {memory}' for memory in sections['user']))
-    if sections['neighborhood']:
-        parts.append('[Memory Neighborhood]\n' + '\n'.join(f'- {memory}' for memory in sections['neighborhood']))
-    if sections['context']:
-        parts.append('[Relevant Context]\n' + '\n'.join(f'- {memory}' for memory in sections['context']))
+    for title, key in (
+        ('User Memory', 'user'),
+        ('Memory Neighborhood', 'neighborhood'),
+        ('Relevant Context', 'context'),
+    ):
+        part = _format_memory_context_section(title, sections[key])
+        if part:
+            parts.append(part)
     if not parts:
         return form_data