transformers safetensors mistral text-generation mergekit merge conversational arxiv:2306.01708 base_model:anthracite-org/magnum-v2.5-12b-kto base_model:merge:anthracite-org/magnum-v2.5-12b-kto base_model:nothingiisreal/MN-12B-Celeste-V1.9 base_model:merge:nothingiisreal/MN-12B-Celeste-V1.9 autotrain_compatible text-generation-inference endpoints_compatible region:us