Baidu ERNIE 4.5 Open Family

Overview

A 2026 update describes Baidu’s ERNIE open family advancing to ERNIE 4.5, including text and vision-language variants, mixture-of-experts models with 3B and 47B activated parameters, and a 0.3B dense model.[3] The weights and ERNIEKit tooling are made available under Apache 2.0, targeting open-source and enterprise adoption in China.[3] While the article is dated August 11, 2026, it reflects a recent upgrade to Baidu’s stack that supports multimodal chat and application building across Chinese scenarios.