transformers gguf mistral quantized 2-bit 3-bit 4-bit 5-bit 6-bit 8-bit GGUF text-generation mixtral base_model:MaziyarPanahi/Llama-3-13B-Instruct-v0.1 base_model:quantized:MaziyarPanahi/Llama-3-13B-Instruct-v0.1 text-generation-inference region:us