transformers safetensors llava pretraining multimodal llama3 clip lmm vlm mantis en dataset:TIGER-Lab/Mantis-Instruct arxiv:2405.01483 base_model:TIGER-Lab/Mantis-8B-clip-llama3-pretraind base_model:finetune:TIGER-Lab/Mantis-8B-clip-llama3-pretraind license:llama3 endpoints_compatible region:us