Technical Specifications

ERNIE-4.5-VL-424B-A47B

ERNIE-4.5-VL-424B-A47B is a multimodal foundation model developed by Baidu, representing the flagship variant of the ERNIE 4.5 family. It is engineered to process and generate content across textual and visual modalities using a large-scale Mixture of Experts (MoE) framework. By integrating 424 billion total parameters with a sparse activation of 47 billion parameters per token, the model maintains high-capacity representation while optimizing computational throughput. Its design facilitates applications requiring advanced logic, comprehensive document analysis, and sophisticated multimodal conversational interactions.

The model employs a heterogeneous MoE architecture that differentiates between text and vision processing while maintaining a unified hidden state. It incorporates 128 experts in total, including 64 specialized experts for text and 64 for vision, with a routing mechanism that selects 8 active experts per modality for each token. To ensure effective cross-modal integration without performance degradation in specific domains, the system utilizes shared self-attention layers and shared experts alongside modality-isolated routing. The attention mechanism is based on Grouped Query Attention (GQA) with 64 heads and 8 key-value heads, optimized for a context window of 131,072 tokens.

Training and inference are facilitated by the PaddlePaddle deep learning framework, supporting industrial-grade deployment through 4-bit and 2-bit lossless quantization. The architecture supports two distinct operational modes: a standard inference mode for rapid perception tasks and a reasoning-heavy mode for complex logical problems. Primary use cases involve visual question answering, complex chart and document interpretation, and automated multimodal content generation. The inclusion of 2D rotary position embeddings (RoPE) in the vision encoder and absolute position embeddings in the transformer backbone ensures precise spatial and sequential modeling across diverse input types.

No evaluation benchmarks for ERNIE-4.5-VL-424B-A47B available.