diff --git a/app/main.py b/app/main.py
index 05acbcf..159c62c 100644
--- a/app/main.py
+++ b/app/main.py
@@ -152,6 +152,14 @@ def _parse_json_body(raw: bytes, model_cls):
 async def _parse_multipart(request: Request):
     form = await request.form()
     upload = form.get("image")
+    if upload is None or not hasattr(upload, "read"):
+        # Clients following OpenAI's newer image API (e.g. LiteLLM) send the file
+        # under "image[]"; also accept other common field names.
+        for _key in ("image[]", "image[0]", "file", "input_file"):
+            _alt = form.get(_key)
+            if _alt is not None and hasattr(_alt, "read"):
+                upload = _alt
+                break
     # duck-typing: FastAPI 0.142+ ships its own UploadFile class, forms yield starlette's
     if upload is None or not hasattr(upload, "read"):
         raise InvalidRequest("field 'image' (file) is required")