[data] clarify _nothink suffix warning for reasoning-only models (#10613)

Co-authored-by: GSCSD1 <GSCSD1@users.noreply.github.com>
Co-authored-by: Claude <noreply@anthropic.com>

examples/v1/train_full/train_full_ulysses_cp.yaml

@@ -3,6 +3,7 @@ trust_remote_code: true
 model_class: llm
 
 template: qwen3_nothink
+flash_attn: flash_attention_2
 
 # FSDP Config
 dist_config:

src/llamafactory/data/template.py

@@ -655,8 +655,10 @@ def get_template_and_fix_tokenizer(tokenizer: "PreTrainedTokenizer", data_args:
 
     if isinstance(template, ReasoningTemplate):
         logger.warning_rank0(
-            "You are using reasoning template, "
-            "please add `_nothink` suffix if the model is not a reasoning model. "
+            "You are using reasoning template. "
+            "If the base model is NOT a reasoning model (i.e., it has a separate Instruct variant), "
+            "please add `_nothink` suffix to disable thinking. "
+            "For reasoning-only model families (e.g., Qwen3.6), the suffix is not needed. "
             "e.g., qwen3_vl_nothink"
         )
         template.enable_thinking = data_args.enable_thinking

src/llamafactory/extras/constants.py

@@ -3372,6 +3372,19 @@ register_model_group(
 )
 
 
+# Qwen-AgentWorld: language world model based on Qwen3.5-35B-A3B (MoE).
+# Reference: https://github.com/QwenLM/Qwen-AgentWorld
+register_model_group(
+    models={
+        "Qwen-AgentWorld-35B-A3B-Thinking": {
+            DownloadSource.DEFAULT: "Qwen/Qwen-AgentWorld-35B-A3B",
+            DownloadSource.MODELSCOPE: "Qwen/Qwen-AgentWorld-35B-A3B",
+        },
+    },
+    template="qwen3",
+)
+
+
 register_model_group(
     models={
         "Vicuna-v1.5-7B-Chat": {