技术规格

ERNIE-4.5-300B-A47B

ERNIE-4.5-300B-A47B is a large-scale Mixture-of-Experts (MoE) foundation model developed by Baidu as a core component of the ERNIE 4.5 family. While the broader series encompasses multimodal capabilities, this specific variant is a text-focused model optimized for advanced natural language understanding, complex reasoning, and high-performance text generation in both English and Chinese. It serves as a high-capacity solution for knowledge-intensive tasks, balancing the expansive knowledge base of a 300-billion parameter system with the computational efficiency of sparse activation.

The technical architecture employs a novel heterogeneous MoE structure that facilitates parameter sharing while utilizing modality-isolated routing to prevent cross-modal interference during pre-training. It features 54 Transformer layers and 64 total experts, with 8 active experts per token, resulting in 47 billion active parameters during inference. The model utilizes Grouped Query Attention (GQA) with 64 query heads and 8 key-value heads to optimize memory bandwidth and throughput. Training was conducted using the PaddlePaddle deep learning framework, incorporating intra-node expert parallelism, memory-efficient pipeline scheduling, and FP8 mixed-precision training to achieve high hardware utilization.

Operational efficiency is enhanced through support for near-lossless 4-bit and 2-bit quantization, enabling deployment on a variety of hardware configurations including single-card and multi-GPU setups. The model maintains a substantial context window of 131,072 tokens, allowing for the processing of long-form documents and maintaining coherence across extended dialogues. For post-training, the model undergoes Supervised Fine-Tuning (SFT), Direct Preference Optimization (DPO), and Unified Preference Optimization (UPO) to align outputs with user instructions and ensure robust performance in production environments.

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