# Baidu — ERNIE 5.1

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## Model

- Name: ERNIE 5.1
- Company: Baidu (baidu.com)
- Launch post: ERNIE 5.1 Officially Released! Topping Multiple Leaderboards — A Model That Writes Better and Understands You More — https://forck.live/items/4640-ernie-5-1-officially-released-topping-multiple-leaderboards-a-model-that
- Announced: 2026-05-09
- Launch source: https://ernie.baidu.com/blog/posts/ernie-5.1-0508-release/
- Launch chosen by: a person, pinned in the model registry
- Released (per models.dev): 2026-05-09
- Listed (per OpenRouter): not stated
- Open weights: not stated
- Posts about it: 1
- Outlets named under its posts: 0
- Also written: ERNIE-5.1

## Posts about it

_Baidu's own posts whose title names ERNIE 5.1, and its launch post, in the record's order: dated newest first, undated last. The record reads the newest 50 first-party posts mentioning the model, every company's together, so a model mentioned more often than that lists the newest of them._

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in this order before any others:

    Company · Announced · Category · Coverage · Announcement · Group · Source · Record

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reached no count of its own, never that nobody wrote about it.

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that the analysis placed it outside this taxonomy; neither is a verdict about
the announcement.

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than a how-to, a customer story, a changelog listing or a staffing note.

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entry itself so it holds where the groups are headings and where they are not.
One of: `models`, `covered`, `announcements`, `routine`.

Anything after `Record` is held detail that only some announcements carry.

### Baidu — ERNIE 5.1 Officially Released! Topping Multiple Leaderboards — A Model That Writes Better and Understands You More

- Company: Baidu (baidu.com)
- Announced: 2026-05-09
- Category: new-model
- Coverage: not counted
- Announcement: yes
- Group: models
- Source: https://ernie.baidu.com/blog/posts/ernie-5.1-0508-release/
- Record: https://forck.live/items/4640-ernie-5-1-officially-released-topping-multiple-leaderboards-a-model-that
- Subject: ERNIE

Baidu officially released ERNIE 5.1, a new model derived from ERNIE 5.0 with compressed parameters (total to ~1/3, active to ~1/2) and pre-training cost at only 6% of comparable models. It uses a disaggregated fully-asynchronous reinforcement learning infrastructure. ERNIE 5.1 achieved 4th place globally and 1st among Chinese models on the Arena Search leaderboard, and shows strong agentic, reasoning, and knowledge capabilities. A playground is available on Baidu AI Studio.

## Who reported on it

_This record names no outlet that reported on these posts._

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Record: https://forck.live/models/ernie-5-1
Catalogue: https://forck.live/llms.txt
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