diff --git a/backend/services/llamaswap.py b/backend/services/llamaswap.py
index 98f1645..2205bdf 100644
--- a/backend/services/llamaswap.py
+++ b/backend/services/llamaswap.py
@@ -27,6 +27,24 @@ ROLE_IDS = {"fast", "heavy", "coder", "vision", "scout"}
 _CTX_RE = re.compile(r"-(?:c|-ctx-size)\s+(\d+)")
 _PATH_RE = re.compile(r"-(?:m|-model)\s+([^\s]+)")
 _QUANT_RE = re.compile(r"(Q\d_[A-Z0-9_]+|IQ\d_[A-Z0-9_]+|fp16|bf16)\.gguf", re.IGNORECASE)
+_SPLIT_RE = re.compile(r"-(\d+)-of-(\d+)\.gguf$", re.IGNORECASE)
+
+
+def _gguf_total_size(path: str) -> int | None:
+    """Gesamtgröße eines GGUF inkl. ALLER Split-Teile (…-00001-of-00003.gguf).
+    Die Größe nur des ersten Teils ist bei Splits irreführend (oft nur ein Header)."""
+    try:
+        base = os.path.basename(path)
+        m = _SPLIT_RE.search(base)
+        if not m:
+            return os.path.getsize(path)
+        prefix, dirn = base[:m.start()], os.path.dirname(path)
+        total = sum(os.path.getsize(os.path.join(dirn, f))
+                    for f in os.listdir(dirn)
+                    if f.startswith(prefix) and _SPLIT_RE.search(f))
+        return total or os.path.getsize(path)
+    except OSError:
+        return None
 
 
 # --- Lesen -------------------------------------------------------------------
@@ -54,7 +72,7 @@ def _parse_model(name: str, spec: dict) -> dict:
         path = m.group(1).replace("'", "").replace('"', "")
         filename = os.path.basename(path)
         if os.path.exists(path):
-            size_bytes = os.path.getsize(path)
+            size_bytes = _gguf_total_size(path)
         if (q := _QUANT_RE.search(path)):
             quant = q.group(1).upper()