transformers safetensors mixtral text-generation Mixtral instruct finetune chatml gpt4 synthetic data distillation conversational en dataset:teknium/OpenHermes-2.5 base_model:mistralai/Mixtral-8x7B-v0.1 base_model:quantized:mistralai/Mixtral-8x7B-v0.1 license:apache-2.0 autotrain_compatible text-generation-inference endpoints_compatible 8-bit exl2 region:us