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What is ERNIE 5.1?

ERNIE 5.1 is Baidu’s advanced large language model platform designed to deliver high-level reasoning, autonomous agent behavior, creative intelligence, and enterprise-scale AI performance while dramatically improving parameter efficiency and training cost optimization. Developed as the next evolution of the ERNIE model family, ERNIE 5.1 inherits the foundational capabilities of ERNIE 5.0 while reducing total parameters and active parameters to create a more efficient and scalable AI system capable of flagship-level intelligence. The model performs strongly across global AI leaderboards and benchmark evaluations for reasoning, world knowledge, mathematical problem solving, search capabilities, and agentic workflows, placing it among the top-performing AI systems internationally. ERNIE 5.1 introduces a disaggregated fully asynchronous reinforcement learning infrastructure that separates training, inference, reward systems, and agent loops to improve scalability, stability, resource utilization, and long-horizon task optimization. The platform also includes FP8 low-precision optimization, elastic resource scheduling, and reinforcement learning consistency improvements that reduce latency and improve overall model efficiency. Baidu developed a multi-stage reinforcement learning training pipeline centered on expert model specialization and on-policy distillation, enabling ERNIE 5.1 to combine capabilities in reasoning, coding, conversational AI, creative writing, and agentic tasks without performance degradation between domains. ERNIE 5.1 demonstrates advanced creative generation capabilities with strong contextual awareness, emotional understanding, narrative pacing, and stylistic adaptability that support storytelling, professional writing, and AI-assisted creative production.

What is Baidu?

We provide users with multiple pathways to access a wealth of information and services. In addition to our primary web search capabilities, we also facilitate numerous popular community-oriented platforms. Notably, Baidu PostBar stands out as the largest Chinese-language community platform that enables query-based search; Baidu Knows is known as the premier interactive knowledge-sharing platform in Chinese; and Baidu Encyclopedia serves as the largest user-generated encyclopedia in the Chinese language. Beyond these flagship offerings, we also feature a variety of sought-after vertical search tools, such as Maps, Image Search, Video Search, and News Search, among others. Our sophisticated technology supports these services, and we are dedicated to continuous innovation and enhancement. As mobile usage has surged in recent years, the Internet landscape has undergone significant changes, creating substantial opportunities for our growth. Baidu is actively evolving to meet the demands of this mobile-centric era, and we are focused on advancing mobile search to unprecedented levels. This transformation illustrates our commitment to adapting to our users' evolving requirements in a rapidly digitizing world, ensuring we remain at the forefront of technological advancements.

Media

Media

Integrations Supported

C
Julia
Kotlin
PHP
R
Rust
Visual Basic

Integrations Supported

AdChina.io
Baidu Qianfan
CPV Lab Pro
HARPA AI
Hexomatic
MINT
NVIDIA DRIVE Map
ReverseImageSearch.com
SEELE AI
SerpWow
SuperMap GIS
Walles.AI

API Availability

Has API

API Availability

Pricing Information

Pricing not provided

Pricing Information

Free
Free Version

Supported Platforms

SaaS

Supported Platforms

SaaS
Android
iPhone
iPad

Customer Service / Support

Web-Based Support

Customer Service / Support

Web-Based Support

Training Options

Documentation Hub

Training Options

Documentation Hub
Online Training

Company Facts

Organization Name

Baidu

Date Founded

2000

Company Location

China

Company Website

ernie.baidu.com

Company Facts

Organization Name

Baidu

Date Founded

2000

Company Location

China

Company Website

www.baidu.com

Categories and Features

AI Coding Models

Not specified

AI Models

Not specified

AI Reasoning Models

Not specified

AI Vision Models

Not specified

Foundation Models

Not specified

Large Language Models

Not specified

Multimodal Models

Not specified

Categories and Features

Search Engines

Not specified

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