diff --git a/scripts/odysseus-gallery b/scripts/odysseus-gallery
index ab892d798..20e210f04 100755
--- a/scripts/odysseus-gallery
+++ b/scripts/odysseus-gallery
@@ -6,6 +6,7 @@ that are awkward at the shell). Filters images by tag, prompt, favorite,
 album, and surfaces EXIF metadata.
 
     odysseus-gallery list --limit 20 --favorites
+    odysseus-gallery list --tag "sunset,beach"  # all tags, manual or AI
     odysseus-gallery show IMAGE_ID
     odysseus-gallery albums | jq -r '.[] | .name'
     odysseus-gallery search "sunset"          # matches prompt + tags
@@ -83,7 +84,13 @@ def cmd_list(args):
                 fail(f"no album named {args.album!r}")
             q = q.filter(GalleryImage.album_id == al.id)
         if args.tag:
-            q = q.filter(GalleryImage.tags.ilike(f"%{args.tag}%"))
+            for tag in (value.strip() for value in args.tag.split(",")):
+                if not tag:
+                    continue
+                q = q.filter(
+                    GalleryImage.tags.ilike(f"%{tag}%") |
+                    GalleryImage.ai_tags.ilike(f"%{tag}%")
+                )
         q = q.order_by(GalleryImage.created_at.desc()).limit(args.limit)
         emit([_serialize_image(i) for i in q.all()], args)
     finally:
@@ -159,7 +166,7 @@ def _build_parser():
     pl.add_argument("--limit", type=int, default=50)
     pl.add_argument("--favorites", action="store_true")
     pl.add_argument("--album", help="filter by album name")
-    pl.add_argument("--tag", help="substring match against tags column")
+    pl.add_argument("--tag", help="comma-separated tags; each matches manual or AI tags by substring")
     pl.set_defaults(func=cmd_list)
 
     psh = sub.add_parser("show", parents=[common])
diff --git a/tests/cli/test_gallery_cli_tag_filters.py b/tests/cli/test_gallery_cli_tag_filters.py
new file mode 100644
index 000000000..b740b3488
--- /dev/null
+++ b/tests/cli/test_gallery_cli_tag_filters.py
@@ -0,0 +1,67 @@
+"""Gallery CLI tag filters match both sources and stack like the web library."""
+from datetime import datetime, timedelta
+
+import pytest
+from sqlalchemy import create_engine
+from sqlalchemy.orm import sessionmaker
+
+from core.database import Base, GalleryAlbum, GalleryImage
+from tests.helpers.cli_loader import load_script
+
+
+@pytest.fixture
+def gallery_cli(monkeypatch, tmp_path):
+    engine = create_engine(f"sqlite:///{tmp_path / 'gallery.db'}")
+    Base.metadata.create_all(engine)
+    sessions = sessionmaker(bind=engine)
+    with sessions() as db:
+        db.add(GalleryAlbum(id='sea', name='Sea'))
+        for index, (uid, tags, ai_tags, favorite, album) in enumerate([
+            ('manual', 'sunset,beach', '', True, 'sea'),
+            ('ai', '', 'Beach,sunset', False, 'sea'),
+            ('split', 'sunset', 'beach', True, None),
+            ('one', 'sunset', '', False, None),
+            ('other', 'forest', 'moss', False, None),
+            ('inactive', 'sunset,beach', 'sunset,beach', True, 'sea'),
+        ]):
+            db.add(GalleryImage(id=uid, filename=uid+'.png', tags=tags, ai_tags=ai_tags,
+                                favorite=favorite, album_id=album, is_active=uid!='inactive',
+                                created_at=datetime(2026, 1, 1) + timedelta(minutes=index)))
+        db.commit()
+    cli = load_script('odysseus-gallery')
+    monkeypatch.setattr(cli, 'SessionLocal', sessions)
+    output = []
+    monkeypatch.setattr(cli, 'emit', lambda rows, args: output.extend(rows))
+
+    def run(*argv):
+        output.clear()
+        args = cli._build_parser().parse_args(['list', *argv])
+        args.func(args)
+        return [row['id'] for row in output]
+
+    yield run
+    engine.dispose()
+
+
+@pytest.mark.parametrize('tag,expected', [
+    ('sunset', ['one', 'split', 'ai', 'manual']),
+    ('beach,sunset', ['split', 'ai', 'manual']),
+    ('sunset,beach', ['split', 'ai', 'manual']),
+    (', sunset, , BEACH ,', ['split', 'ai', 'manual']),
+    ('forest', ['other']),
+    ('no-match', []),
+    (' , ', ['other', 'one', 'split', 'ai', 'manual']),
+    ('sun', ['one', 'split', 'ai', 'manual']),
+])
+def test_tag_sources_and_stacking(gallery_cli, tag, expected):
+    assert gallery_cli('--tag', tag) == expected
+
+
+@pytest.mark.parametrize('options,expected', [
+    ([], ['other', 'one', 'split', 'ai', 'manual']),
+    (['--tag', 'beach,sunset', '--favorites'], ['split', 'manual']),
+    (['--tag', 'beach,sunset', '--album', 'Sea'], ['ai', 'manual']),
+    (['--tag', 'beach', '--limit', '1'], ['split']),
+])
+def test_tag_filters_preserve_other_list_options(gallery_cli, options, expected):
+    assert gallery_cli(*options) == expected