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What is ERNIE 4.5?
ERNIE 4.5 is Baidu's advanced AI language model, part of the Enhanced Representation through kNowledge IntEgration series. It represents a significant advancement in Chinese language AI technology, offering powerful natural language understanding and generation capabilities.
Built on Baidu's extensive research in deep learning and natural language processing, ERNIE 4.5 excels at understanding context, generating human-like text, and handling complex queries for science, technology, and everyday conversations.
ERNIE 4.5 Features
ERNIE 4.5 offers multilingual support with particular strength in Chinese language understanding. It features improved reasoning capabilities, better factual accuracy, and enhanced creative writing abilities compared to previous versions.
In 2025, Baidu made a dramatic strategic shift by open-sourcing ERNIE 4.5 under the Apache 2.0 license — making it free for commercial use worldwide. This came after DeepSeek's success proved that open-source AI models could compete with proprietary ones. The PaddlePaddle-ERNIE ecosystem now serves over 23 million developers and 760,000 enterprises globally.
ERNIE 4.5 is a true multimodal model that works seamlessly with text, images, audio, and video.
It can analyze charts, interpret video clips, read documents, and respond intelligently across all these formats. The model is particularly noted for its low hallucination rate, strong reasoning abilities, and surprisingly good understanding of humor, sarcasm, and cultural references.
ERNIE 4.5 Benchmarks
ERNIE 4.5's 300B version beats DeepSeek V3 on 22 out of 28 benchmarks despite being half the size — a testament to Baidu's efficient architecture design.
The vision-language variant outperforms both GPT-5-High and Gemini 2.5 Pro on MathVista (82.5), ChartQA (87.1), and visual understanding tasks.
More AI Models by Baidu
ERNIE 4.5 is part of Baidu's broader ecosystem of ERNIE AI models, which includes ERNIE X1.1 — a deep-thinking model and ERNIE 5.0 — Baidu's 2.4 trillion parameter newest flagship model.
