ERNIE 5.1

Official Site API / Console
Baidu’s latest flagship foundation model with enhanced reasoning, AI Agent capabilities, knowledge understanding, and content creation for enterprise and developer applications.
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CompanyBaidu
Context128K
Released2026-05
Updated2026-07-30

ERNIE 5.1 Overview

ERNIE 5.1 is Baidu’s flagship AI model built for the next generation of intelligent applications. Its core strengths include advanced reasoning, AI Agent execution, knowledge-enhanced intelligence, Chinese language understanding, and enterprise AI deployment, making it suitable for AI assistants, automation systems, and complex business workflows.

ERNIE 5.1 Pricing

PlanPriceDescription
Free Plan Free Suitable for users who want to explore ERNIE 5.1 capabilities.
Paid Plan (API Usage) Usage-based pricing Available through Baidu AI Cloud Qianfan Foundation Model Platform.
Enterprise Plan Custom Pricing Designed for large organizations requiring: Private deployment Enterprise data integration Security management System integration Technical support Large-scale AI deployment

ERNIE 5.1 Key Features

Advanced Reasoning
Handles complex analysis, logical reasoning, professional knowledge tasks, and multi-step problem solving.

AI Agent Capabilities
Supports task planning, tool usage, workflow automation, and autonomous task execution.

Strong Chinese Language Understanding
Optimized for Chinese conversations, knowledge retrieval, semantic understanding, and content generation.

Creative Content Generation
Supports:Article writing,Marketing copy creation,Summarization,Business content generation,Creative ideationEnterprise Knowledge Processing
Designed for enterprise knowledge bases, document analysis, and industry-specific AI solutions.

Multitask Intelligence
Supports a wide range of applications, from everyday AI assistance to professional enterprise workflows.

ERNIE 5.1 Target Audience

① AI application developers
② Enterprise technology teams
③ Software engineers
④ Content creators
⑤ Data analysts
⑥ Businesses building Chinese AI solutions

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