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ERNIE 5.1

BaiduProprietaryPending Human Review

ERNIE 5.1 is Baidu’s more efficient agent and reasoning model derived from ERNIE 5.0’s elastic sub-network training. It compresses total and active parameter capacity while applying asynchronous reinforcement learning and multi-teacher distillation. The hosted model targets language reasoning, creative writing, search, and tool-driven workflows. The official May 9 launch post confirms chat and AI Studio access. Absolute parameter counts and a supported context ceiling are omitted because the announcement establishes relative reductions rather than exact specifications.

2026-05-09
Elastic sparse Mixture of Experts
Proprietary

Specifications

Architecture
Elastic sparse Mixture of Experts
License
Proprietary
Type
text
Modalities
text

Benchmark Scores

Advanced Specifications

Model Family
ERNIE
API Access
Not Available
Chat Interface
Available
Multilingual Support
Yes

Capabilities & Limitations

Capabilities
reasoningcreative writingtool use
Known Limitations
Weights are not publicly downloadableModality support differs between checkpoints and endpointsModel outputs require factual verification
Notable Use Cases
Chinese and English assistantsdocument understandingagent research

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