diff --git a/litellm/files/main.py b/litellm/files/main.py
index e0913a6b940..b55dd021bc8 100644
--- a/litellm/files/main.py
+++ b/litellm/files/main.py
@@ -14,6 +14,13 @@ from typing import Any, Coroutine, Dict, Literal, Optional, Union, cast
 
 import httpx
 
+# Type aliases for provider parameters
+FileCreateProvider = Literal["openai", "azure", "gemini", "vertex_ai", "bedrock", "hosted_vllm", "manus", "anthropic"]
+FileRetrieveProvider = Literal["openai", "azure", "gemini", "vertex_ai", "hosted_vllm", "manus", "anthropic"]
+FileDeleteProvider = Literal["openai", "azure", "gemini", "manus", "anthropic"]
+FileListProvider = Literal["openai", "azure", "manus", "anthropic"]
+FileContentProvider = Literal["openai", "azure", "vertex_ai", "bedrock", "hosted_vllm", "anthropic", "manus"]
+
 import litellm
 from litellm import get_secret_str
 from litellm.litellm_core_utils.get_llm_provider_logic import get_llm_provider
@@ -61,16 +68,7 @@ async def acreate_file(
     file: FileTypes,
     purpose: Literal["assistants", "batch", "fine-tune", "messages"],
     expires_after: Optional[FileExpiresAfter] = None,
-    custom_llm_provider: Literal[
-        "openai",
-        "azure",
-        "gemini",
-        "vertex_ai",
-        "bedrock",
-        "hosted_vllm",
-        "manus",
-        "anthropic",
-    ] = "openai",
+    custom_llm_provider: FileCreateProvider = "openai",
     extra_headers: Optional[Dict[str, str]] = None,
     extra_body: Optional[Dict[str, str]] = None,
     **kwargs,
@@ -115,18 +113,7 @@ def create_file(
     file: FileTypes,
     purpose: Literal["assistants", "batch", "fine-tune", "messages"],
     expires_after: Optional[FileExpiresAfter] = None,
-    custom_llm_provider: Optional[
-        Literal[
-            "openai",
-            "azure",
-            "gemini",
-            "vertex_ai",
-            "bedrock",
-            "hosted_vllm",
-            "manus",
-            "anthropic",
-        ]
-    ] = None,
+    custom_llm_provider: Optional[FileCreateProvider] = None,
     extra_headers: Optional[Dict[str, str]] = None,
     extra_body: Optional[Dict[str, str]] = None,
     **kwargs,
@@ -255,9 +242,7 @@ def create_file(
 @client
 async def afile_retrieve(
     file_id: str,
-    custom_llm_provider: Literal[
-        "openai", "azure", "gemini", "vertex_ai", "hosted_vllm", "manus", "anthropic"
-    ] = "openai",
+    custom_llm_provider: FileRetrieveProvider = "openai",
     extra_headers: Optional[Dict[str, str]] = None,
     extra_body: Optional[Dict[str, str]] = None,
     **kwargs,
@@ -298,9 +283,7 @@ async def afile_retrieve(
 @client
 def file_retrieve(
     file_id: str,
-    custom_llm_provider: Literal[
-        "openai", "azure", "gemini", "vertex_ai", "hosted_vllm", "manus", "anthropic"
-    ] = "openai",
+    custom_llm_provider: FileRetrieveProvider = "openai",
     extra_headers: Optional[Dict[str, str]] = None,
     extra_body: Optional[Dict[str, str]] = None,
     **kwargs,
@@ -428,9 +411,7 @@ def file_retrieve(
 @client
 async def afile_delete(
     file_id: str,
-    custom_llm_provider: Literal[
-        "openai", "azure", "gemini", "manus", "anthropic"
-    ] = "openai",
+    custom_llm_provider: FileDeleteProvider = "openai",
     extra_headers: Optional[Dict[str, str]] = None,
     extra_body: Optional[Dict[str, str]] = None,
     **kwargs,
@@ -474,9 +455,7 @@ async def afile_delete(
 def file_delete(
     file_id: str,
     model: Optional[str] = None,
-    custom_llm_provider: Union[
-        Literal["openai", "azure", "gemini", "manus", "anthropic"], str
-    ] = "openai",
+    custom_llm_provider: Union[FileDeleteProvider, str] = "openai",
     extra_headers: Optional[Dict[str, str]] = None,
     extra_body: Optional[Dict[str, str]] = None,
     **kwargs,
@@ -609,7 +588,7 @@ def file_delete(
 # List files
 @client
 async def afile_list(
-    custom_llm_provider: Literal["openai", "azure", "manus", "anthropic"] = "openai",
+    custom_llm_provider: FileListProvider = "openai",
     purpose: Optional[str] = None,
     extra_headers: Optional[Dict[str, str]] = None,
     extra_body: Optional[Dict[str, str]] = None,
@@ -650,7 +629,7 @@ async def afile_list(
 
 @client
 def file_list(
-    custom_llm_provider: Literal["openai", "azure", "manus", "anthropic"] = "openai",
+    custom_llm_provider: FileListProvider = "openai",
     purpose: Optional[str] = None,
     extra_headers: Optional[Dict[str, str]] = None,
     extra_body: Optional[Dict[str, str]] = None,
@@ -777,9 +756,7 @@ def file_list(
 @client
 async def afile_content(
     file_id: str,
-    custom_llm_provider: Literal[
-        "openai", "azure", "vertex_ai", "bedrock", "hosted_vllm", "anthropic", "manus"
-    ] = "openai",
+    custom_llm_provider: FileContentProvider = "openai",
     extra_headers: Optional[Dict[str, str]] = None,
     extra_body: Optional[Dict[str, str]] = None,
     **kwargs,
@@ -823,20 +800,7 @@ async def afile_content(
 def file_content(
     file_id: str,
     model: Optional[str] = None,
-    custom_llm_provider: Optional[
-        Union[
-            Literal[
-                "openai",
-                "azure",
-                "vertex_ai",
-                "bedrock",
-                "hosted_vllm",
-                "anthropic",
-                "manus",
-            ],
-            str,
-        ]
-    ] = None,
+    custom_llm_provider: Optional[Union[FileContentProvider, str]] = None,
     extra_headers: Optional[Dict[str, str]] = None,
     extra_body: Optional[Dict[str, str]] = None,
     **kwargs,