transformers safetensors llama text-generation medical text-generation-inference llama-3.1 finetuning conversational th en arxiv:2409.08523 base_model:meta-llama/Llama-3.1-8B base_model:finetune:meta-llama/Llama-3.1-8B license:llama3.1 autotrain_compatible endpoints_compatible region:us