diff --git a/app/main.py b/app/main.py
index 2d56eba..60237ba 100644
--- a/app/main.py
+++ b/app/main.py
@@ -1521,7 +1521,11 @@ async def broker_get_usage(email: str) -> dict:
             for row in rows if isinstance(rows, list) else []:
                 if row.get("team_id") != team_id:
                     continue
-                model = row.get("model") or "unknown"
+                # Prefer model_group: it carries our provider/model alias (e.g.
+                # greenpt/green-r) when present; the raw `model` field holds
+                # messy upstream/internal names. Older rows predating the alias
+                # convention have model_group empty, so fall back to `model`.
+                model = row.get("model_group") or row.get("model") or "unknown"
                 m = models.setdefault(model, {"spend": 0.0, "tokens": 0, "calls": 0})
                 m["spend"] += float(row.get("spend") or 0.0)
                 m["tokens"] += int(row.get("total_tokens") or 0)