diff --git a/routellm/openai_server.py b/routellm/openai_server.py
index 7df4192..accf287 100644
--- a/routellm/openai_server.py
+++ b/routellm/openai_server.py
@@ -15,6 +15,7 @@
 import uvicorn
 import yaml
 from fastapi.concurrency import asynccontextmanager
+from fastapi.middleware.cors import CORSMiddleware
 from fastapi.responses import JSONResponse, StreamingResponse
 from openai import AsyncOpenAI
 from pydantic import BaseModel, Field
@@ -48,6 +49,14 @@ async def lifespan(app):
 
 app = fastapi.FastAPI(lifespan=lifespan)
 
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
 
 class ErrorResponse(BaseModel):
     object: str = "error"