transformers safetensors mixtral text-generation merge mergekit lazymergekit prometheus-eval/prometheus-8x7b-v2.0 mistralai/Mixtral-8x7B-Instruct-v0.1 conversational arxiv:2406.07188 base_model:mistralai/Mixtral-8x7B-Instruct-v0.1 base_model:merge:mistralai/Mixtral-8x7B-Instruct-v0.1 base_model:prometheus-eval/prometheus-8x7b-v2.0 base_model:merge:prometheus-eval/prometheus-8x7b-v2.0 license:apache-2.0 model-index autotrain_compatible text-generation-inference endpoints_compatible region:us