transformers safetensors mistral text-generation mergekit merge conversational base_model:HuggingFaceH4/zephyr-7b-beta base_model:merge:HuggingFaceH4/zephyr-7b-beta base_model:Nexusflow/Starling-LM-7B-beta base_model:merge:Nexusflow/Starling-LM-7B-beta autotrain_compatible text-generation-inference endpoints_compatible region:us