diff --git a/internal/gateway/stats.go b/internal/gateway/stats.go
index aefb263..5f8cfc1 100644
--- a/internal/gateway/stats.go
+++ b/internal/gateway/stats.go
@@ -142,14 +142,18 @@ func (s *Stats) Record(r Req) {
 	s.mu.Lock()
 	defer s.mu.Unlock()
 	inc(s.byKey, r.Key, r)
-	inc(s.byModel, r.Model, r)
+	if r.Model != "" {
+		inc(s.byModel, r.Model, r)
+	}
 	inc(s.bySrc, r.Source, r)
 	km := s.byKeyModel[r.Key]
 	if km == nil {
 		km = map[string]*Stat{}
 		s.byKeyModel[r.Key] = km
 	}
-	inc(km, r.Model, r)
+	if r.Model != "" {
+		inc(km, r.Model, r)
+	}
 	ks := s.byKeySrc[r.Key]
 	if ks == nil {
 		ks = map[string]*Stat{}