model: support deepseek-ocr (#11891)

Co-authored-by: yhyang201 <47235274+yhyang201@users.noreply.github.com>
Co-authored-by: yhyang201 <yhyang201@gmail.com>
Co-authored-by: Shi Shuai <126407087+shuaills@users.noreply.github.com>
Co-authored-by: Xinyuan Tong <xinyuantong.cs@gmail.com>

python/sglang/srt/parser/conversation.py

@@ -838,6 +838,19 @@ register_conv_template(
     )
 )
 
+register_conv_template(
+    Conversation(
+        name="deepseek-ocr",
+        system_message="",
+        system_template="",
+        roles=("", ""),
+        sep="",
+        sep_style=SeparatorStyle.NO_COLON_SINGLE,
+        stop_str=["<｜end▁of▁sentence｜>"],
+        image_token="<image>",
+    )
+)
+
 register_conv_template(
     Conversation(
         name="deepseek-vl2",
@@ -981,6 +994,7 @@ MODEL_TYPE_TO_TEMPLATE = {
     "phi4mm": "phi-4-mm",
     "minicpmv": "minicpmv",
     "minicpmo": "minicpmo",
+    "deepseek-ocr": "deepseek-ocr",
 }
 
 
@@ -1057,3 +1071,11 @@ def match_phi_4_mm(model_path: str):
         return "phi-4-mm"
     model_type = get_model_type(model_path)
     return MODEL_TYPE_TO_TEMPLATE.get(model_type)
+
+
+@register_conv_template_matching_function
+def match_deepseek_ocr(model_path: str):
+    if "deepseek-ocr" in model_path.lower():
+        return "deepseek-ocr"
+    model_type = get_model_type(model_path)
+    return MODEL_TYPE_TO_TEMPLATE.get(model_type)