gguf ggml quantized q2_k q3_k_m q4_k_m q5_k_m q6_k q8_0 text-generation en base_model:BEE-spoke-data/Mixtral-GQA-400m-v2 base_model:quantized:BEE-spoke-data/Mixtral-GQA-400m-v2 license:apache-2.0 region:us conversational