Baidu logo

ERNIE 4.5

BaiduOpen WeightsPending Human Review

ERNIE 4.5 is Baidu’s Apache-licensed family of language and vision-language models. This page groups its dense and sparse text checkpoints with separately labeled multimodal variants. The largest vision-language checkpoint uses 424B total parameters and 47B active parameters, with 128K context. Heterogeneous expert routing supports cross-modal learning, while smaller models offer lower serving costs. The June 30 weight release follows earlier hosted availability; checkpoint-specific modality and size differences must be preserved.

2025-03-16
0.3B–424B
Heterogeneous multimodal Mixture of Experts
Apache-2.0

Specifications

Parameters
0.3B–424B
Architecture
Heterogeneous multimodal Mixture of Experts
License
Apache-2.0
Context Window
131,072 tokens
Type
multimodal
Modalities
textimagevideo

Benchmark Scores

Advanced Specifications

Model Family
ERNIE
API Access
Not Available
Chat Interface
Available
Multilingual Support
Yes
Variants
ERNIE-4.5-0.3BERNIE-4.5-21B-A3BERNIE-4.5-300B-A47BERNIE-4.5-VL-28B-A3BERNIE-4.5-VL-424B-A47B

Capabilities & Limitations

Capabilities
language generationreasoningmultimodal understanding
Known Limitations
Large sparse checkpoints require distributed inferenceModality support differs between checkpoints and endpointsModel outputs require factual verification
Notable Use Cases
Chinese and English assistantsdocument understandingagent research

Related Models