diff --git a/api/migrations/versions/2025_07_08_0001_add_always_new_chat.py b/api/migrations/versions/2025_07_08_0001_add_always_new_chat.py
index 0310e37fa7..9112b24e3a 100644
--- a/api/migrations/versions/2025_07_08_0001_add_always_new_chat.py
+++ b/api/migrations/versions/2025_07_08_0001_add_always_new_chat.py
@@ -16,7 +16,7 @@ depends_on = None
 
 def upgrade():
     for table in ('apps', 'sites'):
-        op.add_column(table, sa.Column('always_new_chat', sa.Boolean(), nullable=False, server_default=sa.text('true')))
+        op.add_column(table, sa.Column('always_new_chat', sa.Boolean(), nullable=False, server_default=sa.text('false')))
 
 
 def downgrade():
diff --git a/api/models/model.py b/api/models/model.py
index 85c66222a0..8141fe9301 100644
--- a/api/models/model.py
+++ b/api/models/model.py
@@ -100,7 +100,7 @@ class App(Base):
     updated_by = db.Column(StringUUID, nullable=True)
     updated_at = db.Column(db.DateTime, nullable=False, server_default=func.current_timestamp())
     use_icon_as_answer_icon = db.Column(db.Boolean, nullable=False, server_default=db.text("false"))
-    always_new_chat = db.Column(db.Boolean, nullable=False, server_default=db.text("true"))
+    always_new_chat = db.Column(db.Boolean, nullable=False, server_default=db.text("false"))
 
     @property
     def desc_or_prompt(self):
@@ -1479,7 +1479,7 @@ class Site(Base):
     privacy_policy = db.Column(db.String(255))
     show_workflow_steps = db.Column(db.Boolean, nullable=False, server_default=db.text("true"))
     use_icon_as_answer_icon = db.Column(db.Boolean, nullable=False, server_default=db.text("false"))
-    always_new_chat = db.Column(db.Boolean, nullable=False, server_default=db.text("true"))
+    always_new_chat = db.Column(db.Boolean, nullable=False, server_default=db.text("false"))
     _custom_disclaimer: Mapped[str] = mapped_column("custom_disclaimer", sa.TEXT, default="")
     customize_domain = db.Column(db.String(255))
     customize_token_strategy = db.Column(db.String(255), nullable=False)
diff --git a/api/services/app_service.py b/api/services/app_service.py
index bd66033015..34799c0cdd 100644
--- a/api/services/app_service.py
+++ b/api/services/app_service.py
@@ -235,7 +235,7 @@ class AppService:
         app.icon = args.get("icon")
         app.icon_background = args.get("icon_background")
         app.use_icon_as_answer_icon = args.get("use_icon_as_answer_icon", False)
-        app.always_new_chat = args.get("always_new_chat", True)
+        app.always_new_chat = args.get("always_new_chat", False)
         app.updated_by = current_user.id
         app.updated_at = datetime.now(UTC).replace(tzinfo=None)
         db.session.commit()