From 2b389c5df90877dbc34012d8e3ee56ce08f68dd4 Mon Sep 17 00:00:00 2001
From: Eldar Kurtic <884008+eldarkurtic@users.noreply.github.com>
Date: Wed, 18 Mar 2026 07:57:49 -0400
Subject: [PATCH] fix presence_penalty silently dropped from sampling args

---
 src/lighteval/models/model_input.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/lighteval/models/model_input.py b/src/lighteval/models/model_input.py
index ad41c23eb..2eb5951bb 100644
--- a/src/lighteval/models/model_input.py
+++ b/src/lighteval/models/model_input.py
@@ -118,6 +118,7 @@ def to_litellm_dict(self) -> dict:
             "seed": self.seed,
             "repetition_penalty": self.repetition_penalty,
             "frequency_penalty": self.frequency_penalty,
+            "presence_penalty": self.presence_penalty,
         }
         return {k: v for k, v in args.items() if v is not None}