From 13460010f0c510b2edfddad788f4adda024f0437 Mon Sep 17 00:00:00 2001
From: Tanmay Mandal <studytime958@gmail.com>
Date: Sun, 10 May 2026 16:33:04 +0530
Subject: [PATCH] fix(streaming): enhance ModelResponseStream handling for
 custom LLM providers

---
 litellm/litellm_core_utils/streaming_handler.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/litellm/litellm_core_utils/streaming_handler.py b/litellm/litellm_core_utils/streaming_handler.py
index f27c18e9b65..fae74f7d2e3 100644
--- a/litellm/litellm_core_utils/streaming_handler.py
+++ b/litellm/litellm_core_utils/streaming_handler.py
@@ -1128,7 +1128,10 @@ class CustomStreamWrapper:
             completion_obj: Dict[str, Any] = {"content": ""}
             from litellm.types.utils import GenericStreamingChunk as GChunk
 
-            if isinstance(chunk, ModelResponseStream):
+            if isinstance(chunk, ModelResponseStream) and (
+                self.custom_llm_provider
+                and self.custom_llm_provider in litellm._custom_providers
+            ):
                 _has_content = bool(
                     chunk.choices
                     and chunk.choices[0].delta is not None