diff --git a/studio/backend/utils/models/model_config.py b/studio/backend/utils/models/model_config.py
index 6ddea6ea0b..72cbc40cd3 100644
--- a/studio/backend/utils/models/model_config.py
+++ b/studio/backend/utils/models/model_config.py
@@ -969,8 +969,9 @@ def list_gguf_variants(
     def _sort_key(v: GgufVariantInfo) -> tuple:
         is_recommended = v.quant == best_quant
         is_ud = v.quant.startswith("UD-")
-        # (0, ...) recommended | (1, 0, size) other UD | (1, 1, size) non-UD
-        return (0 if is_recommended else 1, 0 if is_ud else 1, v.size_bytes)
+        # (0, ...) recommended | (1, 0, -size) other UD | (1, 1, -size) non-UD
+        # Negative size so largest (best quality) appears first.
+        return (0 if is_recommended else 1, 0 if is_ud else 1, -v.size_bytes)
 
     variants.sort(key = _sort_key)