transformers safetensors mistral text-generation merge mergekit lazymergekit OpenPipe/mistral-ft-optimized-1218 Rakuten/RakutenAI-7B-chat base_model:OpenPipe/mistral-ft-optimized-1218 base_model:merge:OpenPipe/mistral-ft-optimized-1218 base_model:Rakuten/RakutenAI-7B-chat base_model:merge:Rakuten/RakutenAI-7B-chat autotrain_compatible text-generation-inference endpoints_compatible region:us