transformers safetensors qwen2 text-generation mergekit merge conversational base_model:Qwen/Qwen1.5-4B-Chat base_model:merge:Qwen/Qwen1.5-4B-Chat base_model:stabilityai/stablelm-2-1_6b base_model:merge:stabilityai/stablelm-2-1_6b autotrain_compatible text-generation-inference endpoints_compatible region:us