diff --git a/src/documents/management/commands/document_llmindex.py b/src/documents/management/commands/document_llmindex.py
index 9823b1b87..7b34ca9a8 100644
--- a/src/documents/management/commands/document_llmindex.py
+++ b/src/documents/management/commands/document_llmindex.py
@@ -2,6 +2,7 @@ from typing import Any
 
 from documents.management.commands.base import PaperlessCommand
 from documents.tasks import llmindex_index
+from paperless_ai.indexing import llm_index_compact
 
 
 class Command(PaperlessCommand):
@@ -12,9 +13,12 @@ class Command(PaperlessCommand):
 
     def add_arguments(self, parser: Any) -> None:
         super().add_arguments(parser)
-        parser.add_argument("command", choices=["rebuild", "update"])
+        parser.add_argument("command", choices=["rebuild", "update", "compact"])
 
     def handle(self, *args: Any, **options: Any) -> None:
+        if options["command"] == "compact":
+            llm_index_compact()
+            return
         llmindex_index(
             rebuild=options["command"] == "rebuild",
             iter_wrapper=lambda docs: self.track(
diff --git a/src/paperless_ai/indexing.py b/src/paperless_ai/indexing.py
index caae1cbb9..ede26766b 100644
--- a/src/paperless_ai/indexing.py
+++ b/src/paperless_ai/indexing.py
@@ -311,6 +311,12 @@ def llm_index_add_or_update_document(document: Document):
         store.ensure_document_id_scalar_index()
 
 
+def llm_index_compact() -> None:
+    """Compact the index immediately, clearing all MVCC version history."""
+    with write_store() as store:
+        store.compact(retention_seconds=0)
+
+
 def llm_index_remove_document(document: Document):
     """Remove a document's chunks from the LLM index."""
     with write_store() as store:
diff --git a/src/paperless_ai/tests/test_ai_indexing.py b/src/paperless_ai/tests/test_ai_indexing.py
index 5333e70d9..4162eb01f 100644
--- a/src/paperless_ai/tests/test_ai_indexing.py
+++ b/src/paperless_ai/tests/test_ai_indexing.py
@@ -525,6 +525,26 @@ class TestLlmIndexAddOrUpdateDocumentEmptyContent:
         mock_load.assert_not_called()
 
 
+@pytest.mark.django_db
+def test_llm_index_compact_uses_zero_retention(
+    temp_llm_index_dir: Path,
+    mocker: pytest_mock.MockerFixture,
+) -> None:
+    """compact must use retention_seconds=0 to clear all MVCC history immediately."""
+    mock_store = mocker.MagicMock()
+    mocker.patch(
+        "paperless_ai.indexing.write_store",
+        return_value=mocker.MagicMock(
+            __enter__=mocker.MagicMock(return_value=mock_store),
+            __exit__=mocker.MagicMock(return_value=False),
+        ),
+    )
+
+    indexing.llm_index_compact()
+
+    mock_store.compact.assert_called_once_with(retention_seconds=0)
+
+
 @pytest.mark.django_db
 class TestLlmIndexLocking:
     """Index mutation functions must go through write_store(), which holds the lock.