[model] Support Intern-S1-mini (#8976)

src/llamafactory/data/template.py

@@ -1201,6 +1201,17 @@ register_template(
 )
 
 
+register_template(
+    name="intern_s1",
+    format_user=StringFormatter(slots=["<|im_start|>user\n{{content}}<|im_end|>\n<|im_start|>assistant\n"]),
+    format_assistant=StringFormatter(slots=["{{content}}<|im_end|>\n"]),
+    format_system=StringFormatter(slots=["<|im_start|>system\n{{content}}<|im_end|>\n"]),
+    format_prefix=EmptyFormatter(slots=[{"bos_token"}]),
+    stop_words=["<|im_end|>"],
+    mm_plugin=get_mm_plugin(name="intern_vl", image_token="<image>", video_token="<video>"),
+)
+
+
 # copied from qwen template
 register_template(
     name="keye_vl",

src/llamafactory/extras/constants.py

@@ -1264,6 +1264,16 @@ register_model_group(
     multimodal=True,
 )
 
+register_model_group(
+    models={
+        "Intern-S1-mini": {
+            DownloadSource.DEFAULT: "internlm/Intern-S1-mini",
+            DownloadSource.MODELSCOPE: "Shanghai_AI_Laboratory/Intern-S1-mini",
+        }
+    },
+    template="intern_s1",
+    multimodal=True,
+)
 
 register_model_group(
     models={

src/llamafactory/model/model_utils/visual.py

@@ -234,6 +234,9 @@ _register_composite_model(
     model_type="internvl",
 )
 
+_register_composite_model(
+    model_type="interns1",
+)
 
 _register_composite_model(
     model_type="Keye",