transformers safetensors mistral text-generation reward model RLHF RLAIF quantized 4-bit AWQ autotrain_compatible endpoints_compatible chatml conversational en dataset:berkeley-nest/Nectar arxiv:1909.08593 base_model:Nexusflow/Starling-LM-7B-beta base_model:quantized:Nexusflow/Starling-LM-7B-beta license:apache-2.0 text-generation-inference awq region:us