transformers pytorch safetensors llama text-generation physics cosmology conversational en dataset:teknium/OpenHermes-2.5 arxiv:2407.04420 base_model:meta-llama/Meta-Llama-3-8B base_model:finetune:meta-llama/Meta-Llama-3-8B license:mit autotrain_compatible text-generation-inference endpoints_compatible region:us