From ae10f01e6a3f21e2c2861c778235cc52f27aec99 Mon Sep 17 00:00:00 2001
From: Muhammad Waqas <47238077+smwaqas89@users.noreply.github.com>
Date: Wed, 4 Mar 2026 01:08:27 -0600
Subject: [PATCH] fix: set litellm.drop_params to support non-OpenAI providers

Fixes #63. Also addresses the issue in #32.

When using providers like Ollama or Groq as the weak model,
litellm raises UnsupportedParamsError for parameters like
presence_penalty that these providers don't support.

Setting litellm.drop_params = True causes litellm to silently
drop unsupported parameters, enabling seamless routing to any
provider supported by litellm.
---
 routellm/controller.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/routellm/controller.py b/routellm/controller.py
index 8a02a05..a46d7d2 100644
--- a/routellm/controller.py
+++ b/routellm/controller.py
@@ -4,7 +4,10 @@
 from typing import Any, Optional
 
 import pandas as pd
+import litellm
 from litellm import acompletion, completion
+
+litellm.drop_params = True
 from tqdm import tqdm
 
 from routellm.routers.routers import ROUTER_CLS