ERNIE-5.1
ERNIE-5.1 is the latest generation of Baidu's flagship ERNIE model on Qianfan, trained with separated fully-asynchronous reinforcement learning and enhanced for agent capability, knowledge integration, reasoning and deep search.
text → text · made by Baidu
$0.59→$2.67per Mtok in / out
Baidu
Sold by 2 ways
| Seller | Lane | Rate |
|---|---|---|
| Baidu cloud | standard | $0.59per Mtok in$2.67per Mtok outcloud.baidu.com · read 2026-08-25 |
| Baidu cloud | 32k-128k | $0.89per Mtok in$3.26per Mtok outcloud.baidu.com · read 2026-08-25 |
Measured 2 standings
| Place | Board | Metric | Score |
|---|---|---|---|
| 6thof 34 | LMArena · Search | Score (Elo) | 1227 |
| 43rdof 402 | LMArena · Text | Score (Elo) | 1468 |
About
ERNIE-5.1 — a text model from Baidu, sold by one company from $0.59 in and $2.67 out per million tokens, placed 43rd of 402 on LMArena · Text.
It takes text and returns text, with a context window of 128,000 tokens. It was published in May 2026. The catalogue files it under chat. Only Baidu sells it, at $0.59 in and $2.67 out per million tokens. Beside the standard rate there is a separately routed lane. It has been measured on 2 boards, and stands best at 43rd of 402 on LMArena · Text.
Every current figure
- Maker
- Baidu
- Register
- model
- Takes
- text
- Returns
- text
- Context
- 128,000 tokens
- Longest answer
- 64,000 tokens
- Published
- May 2026
- Licence
- not read
- Sellers
- 1
- Price
- $0.59 in and $2.67 out per million tokens — Baidu
- Boards
- 2
- Best place
- 43rd of 402 — LMArena · Text