trl safetensors DPO WeniGPT pt base_model:Weni/WeniGPT-2.3.3-Zephyr-7B-zephyr-prompt-LLM_Base_2.0.3_SFT_reduction_variation base_model:finetune:Weni/WeniGPT-2.3.3-Zephyr-7B-zephyr-prompt-LLM_Base_2.0.3_SFT_reduction_variation license:mit region:us