Baidu has launched its latest AI foundation models, ERNIE 4.5 and ERNIE X1, making them freely available to the public through ERNIE Bot’s website.
This move, which comes ahead of schedule, signifies a major step in accessible AI technology.
ERNIE 4.5: Multimodal Power at a Fraction of the Cost
ERNIE 4.5, Baidu’s new generation native multimodal foundation model, excels in understanding and integrating text, images, audio, and video content. It boasts improved language skills, reasoning, and memory, while also enhancing hallucination prevention and coding abilities.

Baidu claims ERNIE 4.5 outperforms GPT-4.5 in several benchmarks at a significantly lower cost.

ERNIE X1 is a deep-thinking reasoning model with enhanced capabilities in understanding, planning, reflection, and evolution. It also excels in tool use, supporting advanced search, document Q&A, image understanding, AI image generation, and more.
Baidu states that ERNIE X1 performs on par with DeepSeek R1 at half the price.
Free Access and Enterprise Options
Individual users can now access both ERNIE 4.5 and ERNIE X1 for free through ERNIE Bot.
For enterprise users and developers, ERNIE 4.5 is available through Baidu AI Cloud’s Qianfan platform, with ERNIE X1 to follow soon.
Baidu is also planning to integrate these models into its product ecosystem, including Baidu Search and the Wenxiaoyan app.
The launch of ERNIE 4.5 and ERNIE X1 marks a significant milestone in pushing the boundaries of multimodal and reasoning models,
Baidu stated.
This move highlights the company’s commitment to investing in advanced AI technologies. Founded in 2000, the China-based tech firm Baidu aims to simplify the world through technology.
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