feat: arena models

backend/open_webui/utils/payload.py

@@ -116,6 +116,9 @@ def convert_messages_openai_to_ollama(messages: list[dict]) -> list[dict]:
                 elif item.get("type") == "image_url":
                     img_url = item.get("image_url", {}).get("url", "")
                     if img_url:
+                        # If the image url starts with data:, it's a base64 image and should be trimmed
+                        if img_url.startswith("data:"):
+                            img_url = img_url.split(",")[-1]
                         images.append(img_url)
 
             # Add content text (if any)