transformers safetensors mistral text-generation conversational dataset:Yukang/LongAlpaca-12k arxiv:2309.10400 base_model:openchat/openchat-3.5-0106 base_model:finetune:openchat/openchat-3.5-0106 license:apache-2.0 model-index autotrain_compatible text-generation-inference endpoints_compatible region:us