From 2c87472483ff2a6f1c72d310a0249497834fccc1 Mon Sep 17 00:00:00 2001
From: alpha nerd <alpha-nerd@nomyo.ai>
Date: Tue, 7 Apr 2026 13:28:34 +0200
Subject: [PATCH] fix: conditional to_thread for the image_transform to relieve
 threadpool pressure

---
 router.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/router.py b/router.py
index 08a2e18..94cf1c2 100644
--- a/router.py
+++ b/router.py
@@ -1059,7 +1059,8 @@ async def _make_chat_request(model: str, messages: list, tools=None, stream: boo
         if ":latest" in model:
             model = model.split(":latest")[0]
         if messages:
-            messages = await asyncio.to_thread(transform_images_to_data_urls, messages)
+            if any("images" in m for m in messages):
+                messages = await asyncio.to_thread(transform_images_to_data_urls, messages)
             messages = transform_tool_calls_to_openai(messages)
             messages = _strip_assistant_prefill(messages)
         params = {
@@ -1965,7 +1966,8 @@ async def chat_proxy(request: Request):
             model = model.split(":latest")
             model = model[0]
         if messages:
-            messages = await asyncio.to_thread(transform_images_to_data_urls, messages)
+            if any("images" in m for m in messages):
+                messages = await asyncio.to_thread(transform_images_to_data_urls, messages)
             messages = transform_tool_calls_to_openai(messages)
             messages = _strip_assistant_prefill(messages)
         params = {