ERNIE 4.5 300B A47B is a Mixture-of-Experts language model from Baidu with 300 billion total parameters, activating 47 billion per token for efficient inference. Released as open source in June 2025, it supports both English and Chinese text generation and features a heterogeneous MoE structure with modality-isolated routing for handling text and visual inputs. The model demonstrates particular strength in instruction following and factual knowledge tasks, and is available in both PaddlePaddle and PyTorch formats for flexible deployment.