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Ernie 5.1 specs, prices, where it runs and its benchmark standing

closed weights · top 10 on 0 of 2

Facts

Provider
Baidu
Parameters
Not disclosed by Baidu
Modalities
Text to Text
Boards
License
Proprietary
LMArena
Weights
Closed weights
Benchmarks
2 boards captured
RankBoardScore
25Search ArenaAgents and tools · as “ERNIE 5.1”1,192
44Text ArenaChat · as “ERNIE 5.1”1,467

Versions and release history

3 versions in this line since Nov 13, 2025, from Pricing, OpenRouter and the boards.

VersionReleased
ERNIE 5.0 Thinking PreviewNov 13, 202512 months ago
Ernie 4.5 300B A47B
Ernie 5.1this model
Category ranks, more models and catalog changes