Active Parameters
300B
Context Length
131K
Modality
Text
Architecture
Mixture of Experts (MoE)
License
Apache 2.0
Release Date
30 Jun 2025
Knowledge Cutoff
Jun 2025
VRAM requirements for different quantization methods and context sizes
1,024 tokens
Consumer
34x RTX 4090
24GB VRAM
Datacenter
10x NVIDIA A100
80GB VRAM
Apple Silicon
7x Apple M3 Max
128GB VRAM
131,072 tokens
Consumer
36x RTX 4090
24GB VRAM
Datacenter
10x NVIDIA A100
80GB VRAM
Apple Silicon
8x Apple M3 Max
128GB VRAM
No evaluation benchmarks for ERNIE-4.5-300B-A47B-Base available.
Overall Rank
-
Coding Rank
-
The ERNIE-4.5-300B-A47B-Base model, developed by Baidu, is a large-scale language model utilizing a Mixture-of-Experts (MoE) architecture. As a prominent member of the ERNIE 4.5 family, it contains 300 billion total parameters while activating 47 billion parameters per token through a sparse gated mechanism. This design allows the model to scale its knowledge capacity significantly without a linear increase in per-token inference costs. The model is specifically optimized for advanced text-based reasoning, code generation, and complex instruction following across both English and Chinese languages.
Technically, the model introduces a multimodal heterogeneous MoE structure, which was pre-trained on trillions of tokens using a joint textual and visual modality framework. A key architectural innovation is the modality-isolated routing technique, which ensures that expert specialization for one modality does not negatively impact the performance of another. This variant, the A47B-Base, represents the extracted text-related parameters following this extensive multimodal pre-training phase. It employs Grouped Query Attention (GQA) with 64 query heads and 8 key-value heads to achieve a balance between attention quality and memory efficiency during long-context processing.
The architecture is built upon the PaddlePaddle deep learning framework and supports an expansive context window of 131,072 tokens. To manage the computational demands of a 300B parameter system, Baidu implemented scaling-efficient infrastructure features such as intra-node expert parallelism, memory-efficient pipeline scheduling, and FP8 mixed-precision training. The model is designed for high-throughput deployment environments and supports advanced inference optimizations, including Prefill-Decode (PD) disaggregation with dynamic role switching to maximize hardware utilization.
Attention
Attention Structure
Grouped-Query Attention
Attention Heads
64
Key-Value Heads
8
Attention Head Dimension
-
Position Embedding
Absolute Position Embedding
RoPE Theta
500,000
Sliding Window Attention
No
Sliding Window Size
-
Sliding Window Ratio
-
Linear Attention
-
Linear Attention Ratio
-
Normalization
Layer Normalization
Activation Function
GELU
Dimensions
Hidden Dimension Size
12,288
Number of Layers
54
FFN Intermediate Size (Dense)
3,584
Multi-Token Prediction Heads
-
Tokenizer
Vocabulary Size
103,424
Mixture of Experts
Total Expert Parameters
47.0B
Number of Experts
64
Active Experts
8
Shared Experts
0
FFN Intermediate Size (per Expert)
3,584
Dense Layers Before MoE
3
The Baidu ERNIE 4.5 family consists of ten large-scale multimodal models. They utilize a heterogeneous Mixture-of-Experts (MoE) architecture, which enables parameter sharing across modalities while also employing dedicated parameters for specific modalities, supporting efficient language and multimodal processing.
APX AI
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