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ERNIE 5.1

Baidus closed-weight sparse mixture-of-experts model with a 128K context window

Paid Multimodal
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Undisclosed parameters
Proprietary license
May 2026 released

ERNIE 5.1 is Baidu’s May 2026 model, a sparse mixture-of-experts system with a 128K token context window. Baidu has not published a parameter count.

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