transformers safetensors mistral text-generation llama-2 code en dataset:jondurbin/airoboros-2.2.1 dataset:Open-Orca/OpenOrca dataset:garage-bAInd/Open-Platypus dataset:ehartford/samantha-data dataset:CollectiveCognition/chats-data-2023-09-27 dataset:stingning/ultrachat arxiv:2310.06825 license:llama2 model-index autotrain_compatible text-generation-inference endpoints_compatible region:us