transformers safetensors mistral text-generation pruna-ai conversational base_model:unsloth/Phi-3-mini-4k-instruct-bnb-4bit base_model:quantized:unsloth/Phi-3-mini-4k-instruct-bnb-4bit autotrain_compatible text-generation-inference endpoints_compatible 4-bit bitsandbytes region:us