transformers pytorch llama text-generation llama-3 Mixtral instruct finetune chatml DPO RLHF gpt4 distillation conversational en arxiv:2305.18290 arxiv:2303.13375 arxiv:2212.13138 arxiv:2305.09617 arxiv:2402.07023 base_model:meta-llama/Meta-Llama-3-70B-Instruct base_model:quantized:meta-llama/Meta-Llama-3-70B-Instruct license:llama3 autotrain_compatible text-generation-inference endpoints_compatible exl2 region:us