transformers safetensors mistral text-generation mixtral solar model-fusion fusechat conversational en dataset:FuseAI/FuseChat-Mixture arxiv:2402.16107 base_model:openchat/openchat_3.5 base_model:finetune:openchat/openchat_3.5 license:apache-2.0 model-index autotrain_compatible text-generation-inference endpoints_compatible region:us