From 9ae62c6fc037a34782a07efcfb706b3f017267d3 Mon Sep 17 00:00:00 2001
From: Hertz <2267379130@qq.com>
Date: Sun, 4 Jan 2026 13:17:57 +0800
Subject: [PATCH] [model] support Youtu-LLM-2B (#9707)

---
 README.md                            |  1 +
 README_zh.md                         |  1 +
 src/llamafactory/data/template.py    | 15 +++++++++++++++
 src/llamafactory/extras/constants.py | 15 +++++++++++++++
 4 files changed, 32 insertions(+)

diff --git a/README.md b/README.md
index b530e6087..ef9cc36fe 100644
--- a/README.md
+++ b/README.md
@@ -329,6 +329,7 @@ Read technical notes:
 | [StarCoder 2](https://huggingface.co/bigcode)                     | 3B/7B/15B                        | -                    |
 | [VibeThinker-1.5B](https://huggingface.co/WeiboAI)                | 1.5B                             | qwen3                |
 | [Yi/Yi-1.5 (Code)](https://huggingface.co/01-ai)                  | 1.5B/6B/9B/34B                   | yi                   |
+| [Youtu-LLM](https://huggingface.co/tencent/)                      | 2B                               | youtu                |
 | [Yuan 2](https://huggingface.co/IEITYuan)                         | 2B/51B/102B                      | yuan                 |
 
 > [!NOTE]
diff --git a/README_zh.md b/README_zh.md
index 8b786aabb..2fad20d3c 100644
--- a/README_zh.md
+++ b/README_zh.md
@@ -331,6 +331,7 @@ https://github.com/user-attachments/assets/43b700c6-a178-41db-b1f8-8190a5d3fcfc
 | [StarCoder 2](https://huggingface.co/bigcode)                     | 3B/7B/15B                        | -                    |
 | [VibeThinker-1.5B](https://huggingface.co/WeiboAI)                | 1.5B                             | qwen3                |
 | [Yi/Yi-1.5 (Code)](https://huggingface.co/01-ai)                  | 1.5B/6B/9B/34B                   | yi                   |
+| [Youtu-LLM](https://huggingface.co/tencent/)                      | 2B                               | youtu                |
 | [Yuan 2](https://huggingface.co/IEITYuan)                         | 2B/51B/102B                      | yuan                 |
 
 > [!NOTE]
diff --git a/src/llamafactory/data/template.py b/src/llamafactory/data/template.py
index d196ae388..8e8e11e41 100644
--- a/src/llamafactory/data/template.py
+++ b/src/llamafactory/data/template.py
@@ -2278,6 +2278,21 @@ register_template(
 )
 
 
+register_template(
+    name="youtu",
+    format_user=StringFormatter(slots=["<|User|>{{content}}<|Assistant|>"]),
+    format_assistant=StringFormatter(slots=["{{content}}<|end_of_text|>"]),
+    format_system=StringFormatter(slots=["{{content}}"]),
+    format_function=FunctionFormatter(slots=["{{content}}"], tool_format="default"),
+    format_observation=StringFormatter(slots=["<tool_response>\n{{content}}\n</tool_response><|Assistant|>"]),
+    format_tools=ToolFormatter(tool_format="default"),
+    format_prefix=EmptyFormatter(slots=[{"bos_token"}]),
+    stop_words=["<|end_of_text|>"],
+    replace_eos=True,
+    template_class=ReasoningTemplate,
+)
+
+
 register_template(
     name="yuan",
     format_user=StringFormatter(slots=["{{content}}", {"token": "<sep>"}]),
diff --git a/src/llamafactory/extras/constants.py b/src/llamafactory/extras/constants.py
index 00193c276..cf50954e9 100644
--- a/src/llamafactory/extras/constants.py
+++ b/src/llamafactory/extras/constants.py
@@ -3846,6 +3846,21 @@ register_model_group(
 )
 
 
+register_model_group(
+    models={
+        "Youtu-LLM-2B-Instruct": {
+            DownloadSource.DEFAULT: "tencent/Youtu-LLM-2B",
+            DownloadSource.MODELSCOPE: "Tencent-YouTu-Research/Youtu-LLM-2B",
+        },
+        "Youtu-LLM-2B-Base": {
+            DownloadSource.DEFAULT: "tencent/Youtu-LLM-2B-Base",
+            DownloadSource.MODELSCOPE: "Tencent-YouTu-Research/Youtu-LLM-2B-Base",
+        },
+    },
+    template="youtu",
+)
+
+
 register_model_group(
     models={
         "Yuan2-2B-Chat": {