# Baidu — ERNIE 4.5 Gets a Major Inference Speed Boost

- Company: Baidu (baidu.com)
- Announced: 2025-09-12T00:00:00+00:00
- Category: capability-change
- Subject: ERNIE
- Models affected: ERNIE-4.5-21B-A3B, ERNIE-4.5-300B-A47B
- Source: https://ernie.baidu.com/blog/posts/plas/
- Record: https://forck.live/items/4653-ernie-4-5-gets-a-major-inference-speed-boost

Baidu ERNIE 4.5 models get a major inference speed boost using a new sparse attention mechanism called PLAS, available for -Paddle versions deployed with FastDeploy.

## Evidence

Verbatim from https://ernie.baidu.com/blog/posts/plas/:

> We’ve just rolled out a powerful update for the ERNIE-4.5-21B-A3B and ERNIE-4.5-300B-A47B models that speeds up inference for long-context tasks.

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Record: https://forck.live/items/4653-ernie-4-5-gets-a-major-inference-speed-boost
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