diff --git a/robosystems_client/clients/ledger_client.py b/robosystems_client/clients/ledger_client.py
index 99359ef..fd354a4 100644
--- a/robosystems_client/clients/ledger_client.py
+++ b/robosystems_client/clients/ledger_client.py
@@ -538,6 +538,7 @@
   "jsonld": "JSONLD",
   "holon-jsonld": "HOLON_JSONLD",
   "xbrl-2.1": "XBRL_2_1",
+  "tavi": "TAVI",
 }
 
 
@@ -2216,22 +2217,24 @@ def download_report_bundle(
     to: str | Path | None = None,
     expires_in: int = 300,
   ) -> ReportBundleDownload:
-    """Download a published Report's serialization bundle (JSON-LD or XBRL 2.1).
+    """Download a published Report's serialization bundle.
 
     A download is a read, so the presigned URL is resolved through the
     GraphQL ``reportDownloadUrl`` field (the REST download route was
     retired). Every flavor resolves to a short-lived presigned S3 URL —
-    JSON-LD is stamped at publish time; XBRL is materialized + cached on
-    first request. The client follows the URL and pulls the bytes.
+    JSON-LD is stamped at publish time; XBRL, the holon and the Tavi
+    model are materialized + cached on first request. The client follows
+    the URL and pulls the bytes.
 
     Args:
         graph_id: Graph identifier owning the Report.
         report_id: Report identifier (``rpt_``-prefixed ULID).
         format: Serialization flavor — ``"jsonld"`` (default, the flat
             canonical bundle), ``"holon-jsonld"`` (the dataset-form
-            scene/boundary/projection holon), or ``"xbrl-2.1"``. The enum
-            names ``"JSONLD"`` / ``"HOLON_JSONLD"`` / ``"XBRL_2_1"`` are
-            also accepted.
+            scene/boundary/projection holon), ``"xbrl-2.1"``, or
+            ``"tavi"`` (the Project Tavi compiled model, compact JSON).
+            The enum names ``"JSONLD"`` / ``"HOLON_JSONLD"`` /
+            ``"XBRL_2_1"`` / ``"TAVI"`` are also accepted.
         to: Optional file path to write the bytes to. When set, the
             returned ``ReportBundleDownload.path`` points at the
             written file.
@@ -2275,9 +2278,11 @@ def download_report_bundle(
       )
 
     generation_count = info.generation_count
-    default_ext = {"XBRL_2_1": "zip", "HOLON_JSONLD": "holon.jsonld"}.get(
-      gql_format, "jsonld"
-    )
+    default_ext = {
+      "XBRL_2_1": "zip",
+      "HOLON_JSONLD": "holon.jsonld",
+      "TAVI": "tavi.json",
+    }.get(gql_format, "jsonld")
     filename = (
       _parse_filename(artifact.headers.get("content-disposition", ""))
       or f"{report_id}-g{generation_count or 1}.{default_ext}"
diff --git a/robosystems_client/graphql/generated/enums.py b/robosystems_client/graphql/generated/enums.py
index a554a8b..f32c6d3 100644
--- a/robosystems_client/graphql/generated/enums.py
+++ b/robosystems_client/graphql/generated/enums.py
@@ -5,3 +5,4 @@ class ReportDownloadFormat(str, Enum):
   JSONLD = "JSONLD"
   HOLON_JSONLD = "HOLON_JSONLD"
   XBRL_2_1 = "XBRL_2_1"
+  TAVI = "TAVI"
diff --git a/robosystems_client/graphql/schema.graphql b/robosystems_client/graphql/schema.graphql
index 8124a42..553669d 100644
--- a/robosystems_client/graphql/schema.graphql
+++ b/robosystems_client/graphql/schema.graphql
@@ -2153,7 +2153,7 @@ type ReportBundleDownload {
   generationCount: Int!
 
   """
-  Content the Report carries that this flavor does not. ``disclosure_notes``: the XBRL 2.1 zip ships statements only — tenant-authored disclosure notes render on screen and ride the JSON-LD and holon flavors, but are excluded from this file.
+  Content the Report carries that this flavor does not. ``disclosure_notes``: the XBRL 2.1 zip ships statements only — tenant-authored disclosure notes render on screen and ride the JSON-LD and holon flavors, but are excluded from this file. The Tavi compiled model carries the statements and notes but has no home for ``ib_envelopes`` (the per-Network Information Block payloads), ``definition_links`` (equivalence, general-special, essence-alias and mapping arcs), ``reporting_style``, ``framework_pins``, ``fact_sets`` (the FactSet partition and each fact's structure pin) or ``filing_lifecycle`` (filing status, supersession, share provenance); all of it rides the JSON-LD and holon flavors.
   """
   omittedContent: [String!]!
 }
@@ -2162,6 +2162,7 @@ enum ReportDownloadFormat {
   JSONLD
   HOLON_JSONLD
   XBRL_2_1
+  TAVI
 }
 
 """
diff --git a/tests/test_ledger_client.py b/tests/test_ledger_client.py
index 9bf0501..75a135e 100644
--- a/tests/test_ledger_client.py
+++ b/tests/test_ledger_client.py
@@ -2162,6 +2162,29 @@ def test_xbrl_download_follows_presigned_url(
     assert result.generation_count == 3
     assert mock_query.call_args.args[2]["format"] == "XBRL_2_1"
 
+  @patch("robosystems_client.clients.ledger_client.httpx.Client")
+  def test_tavi_download_maps_the_alias_and_names_the_file(
+    self, mock_client_cls, mock_config, graph_id
+  ):
+    """Tavi: ``"tavi"`` maps to ``TAVI``; without a content-disposition the
+    filename falls back to ``{report}-g{n}.tavi.json``."""
+    artifact = self._mock_artifact(b'{"documentInfo":{}}', "unused")
+    artifact.headers = {}
+    self._patch_httpx(mock_client_cls, artifact)
+    with patch.object(
+      LedgerClient,
+      "_query",
+      return_value=self._gql_data("application/json", "tavi", gen=4),
+    ) as mock_query:
+      result = LedgerClient(mock_config).download_report_bundle(
+        graph_id, "rpt_01", format="tavi"
+      )
+
+    assert result.filename == "rpt_01-g4.tavi.json"
+    assert result.format == "tavi"
+    assert result.content_type == "application/json"
+    assert mock_query.call_args.args[2]["format"] == "TAVI"
+
   @patch("robosystems_client.clients.ledger_client.httpx.Client")
   def test_to_arg_writes_bytes_to_disk(
     self, mock_client_cls, mock_config, graph_id, tmp_path