transformers gguf Llama-3 instruct finetune chatml DPO RLHF gpt4 synthetic data distillation function calling json mode axolotl merges en dataset:teknium/OpenHermes-2.5 base_model:OpenPipe/Hermes-2-Theta-Llama-3-8B-32k base_model:quantized:OpenPipe/Hermes-2-Theta-Llama-3-8B-32k endpoints_compatible region:us imatrix conversational