# Baidu Launches Flagship Large Language Model ERNIE 5.1

- Category: Flash (快讯)
- Published: 2026-05-09T11:58:00.000Z
- Source date: 2026-05-09
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Baidu has officially released ERNIE 5.1, significantly reducing pre-training costs by compressing parameter scale. The model performs excellently in various benchmarks, ranking fourth globally and first domestically, while demonstrating strong competitiveness in agent capabilities and math competition scores.

## At a glance

- ERNIE 5.1 features significant parameter compression, with pre-training costs at only 6% of similar industry models
- The model ranks fourth globally, with agent capabilities surpassing DeepSeek-V4-Pro

## The update

Baidu has officially launched its flagship large language model, ERNIE 5.1. This version features deep architectural optimizations, compressing the total parameter scale to approximately one-third of the previous ERNIE 5.0, with activated parameters at about half. This improvement significantly reduces pre-training costs to just six percent of similar-scale models in the industry. In terms of performance, ERNIE 5.1 ranks fourth globally and first domestically on the Arena search leaderboard with a score of 1223. Furthermore, its agent capabilities surpass DeepSeek-V4-Pro, and it achieved a high score of 99.6 in the AIME26 math competition, second only to Gemini-3.1 Pro, demonstrating leading reasoning and execution levels.

## Sources

- [百度文心](https://mp.weixin.qq.com/s/_I9ziafHheXiJpA-QY2F7A) (2026-05-09)

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