[docs]: refine README for dpo updates

README.md

@@ -16,7 +16,7 @@
 KTransformers is a research project focused on efficient inference and fine-tuning of large language models through CPU-GPU heterogeneous computing. The project has evolved into **two core modules**: [kt-kernel](./kt-kernel/) and [kt-sft](./kt-sft/).
 
 ## 🔥 Updates
-
+* **Dec 22, 2025**: Support RL-DPO fine-tuning with LLaMA-Factory. ([Tutorial](./doc/en/SFT/DPO_tutorial.md))
 * **Dec 5, 2025**: Support Native Kimi-K2-Thinking inference ([Tutorial](./doc/en/Kimi-K2-Thinking-Native.md))
 * **Nov 6, 2025**: Support Kimi-K2-Thinking inference ([Tutorial](./doc/en/Kimi-K2-Thinking.md)) and fine-tune ([Tutorial](./doc/en/SFT_Installation_Guide_KimiK2.md))
 * **Nov 4, 2025**: KTransformers Fine-Tuning × LLaMA-Factory Integration. ([Tutorial](./doc/en/KTransformers-Fine-Tuning_User-Guide.md))

doc/SUMMARY.md

@@ -7,8 +7,9 @@
 
 # Tutorial 
 - [kt-sft part](en/SFT/README.md)
-  - [kt-sft developer tech notes](en/SFT/KTransformers-Fine-Tuning_Developer-Technical-Notes.md)
   - [Injection Tutorial](en/SFT/injection_tutorial.md)
+  - [kt-sft developer tech notes](en/SFT/KTransformers-Fine-Tuning_Developer-Technical-Notes.md)
+  - [DPO tutorial](en/SFT/DPO_tutorial.md)
   <!-- - [Multi-GPU Tutorial](en/multi-gpu-tutorial.md) -->
   <!-- - [Use FP8 GPU Kernel](en/fp8_kernel.md) -->
   <!-- - [Use AMD GPU](en/ROCm.md) -->

doc/en/DPO_tutorial.md → doc/en/SFT/DPO_tutorial.md

@@ -61,7 +61,7 @@ pip install custom_flashinfer/
 
 ## Prepare Models
 
-We uses `deepseek-ai/DeepSeek-V2-Lite` as an example here. You can replace it with other models such as Kimi K2.
+We use `deepseek-ai/DeepSeek-V2-Lite` as an example here. You can replace it with other models such as Kimi K2.
 
 ## How to start
 

kt-sft/README.md

@@ -191,6 +191,8 @@ cpu_infer: 32
 chunk_size: 8192
 ```
 
+We also support RL DPO training using the KTransformers backend now. See [DPO Tutorial](../doc/en/SFT/DPO_tutorial.md) for details.  
+
 `kt_optimize_rule` controls **placement strategy**. See also [ktransformers/optimize_rules](https://github.com/kvcache-ai/ktransformers/tree/main/ktransformers/optimize/optimize_rules). Naming hints (`*` = wildcard):
 
 | Pattern                                      | Meaning                                               |