transformers safetensors llama text-generation mergekit merge conversational arxiv:2212.04089 base_model:UCLA-AGI/Llama-3-Instruct-8B-SPPO-Iter3 base_model:finetune:UCLA-AGI/Llama-3-Instruct-8B-SPPO-Iter3 autotrain_compatible text-generation-inference endpoints_compatible region:us