transformers safetensors mistral text-generation mergekit merge 4-bit AWQ autotrain_compatible endpoints_compatible base_model:HuggingFaceH4/mistral-7b-grok base_model:merge:HuggingFaceH4/mistral-7b-grok base_model:OpenPipe/mistral-ft-optimized-1218 base_model:merge:OpenPipe/mistral-ft-optimized-1218 text-generation-inference awq region:us