transformers gguf mergekit merge Mistral instruct finetune chatml DPO RLHF gpt4 synthetic data distillation function calling json mode text-generation en dataset:teknium/OpenHermes-2.5 base_model:mistralai/Mistral-7B-v0.1 base_model:quantized:mistralai/Mistral-7B-v0.1 license:apache-2.0 endpoints_compatible region:us conversational