transformers safetensors llama text-generation mergekit merge conversational arxiv:2203.05482 base_model:ImagineIt/Alpha-basic base_model:merge:ImagineIt/Alpha-basic base_model:ImagineIt/alpha-r-s-v-12 base_model:merge:ImagineIt/alpha-r-s-v-12 autotrain_compatible text-generation-inference endpoints_compatible region:us