Baidu AI is the artificial intelligence division of Baidu, Inc., a leading Chinese technology company. The division encompasses Baidu's comprehensive AI research, development, and commercialization efforts, including foundation models, autonomous driving, conversational AI, and cloud computing services. Baidu AI operates through the Artificial Intelligence Group (AIG) and provides AI technologies that power hundreds of millions of daily interactions across Baidu's ecosystem.[1]
Overview
Baidu AI spans fundamental research, platforms, and applied products across multiple domains:
Foundation models & Generative AI: The ERNIE (Enhanced Representation through Knowledge Integration) series are transformer-based foundation models. The public-facing chatbot Ernie Bot (Wenxin Yiyan) reached over 200 million users by April 2024 and was made free to use from April 1, 2025.[2][3]
AI Cloud: Baidu AI Cloud provides model-as-a-service, training/inference, and industry solutions, reporting 26% year-over-year revenue growth in Q4 2024 and 42% growth in Q1 2025.[4][5]
Autonomous driving: Under Apollo, Baidu operates Apollo Go robotaxis with a 1,000-vehicle global fleet. Q2 2025 saw 2.2 million fully driverless rides, with cumulative rides exceeding 14 million by August 2025.[6][7]
Developer ecosystem: PaddlePaddle, open-sourced in 2016, serves as China's leading deep-learning framework with over 4.77 million developers and 760,000 companies using the platform.[8][9]
AI hardware: Through Kunlunxin, Baidu designs AI accelerators, with second-generation 7nm Kunlun chips entering mass production in 2025.[10]
History and Development
Early Development (2013-2016)
Baidu began its serious investment in artificial intelligence in 2013, establishing the Institute of Deep Learning (IDL) as its first dedicated AI research laboratory.[11] The company was among the first Chinese technology companies to recognize the potential of deep learning, developing capabilities shortly after Geoffrey Hinton's breakthrough at the ImageNet competition in 2012.[8]
In 2014, Baidu hired Andrew Ng, co-founder of Google Brain and a prominent AI researcher from Stanford University, as its Chief Scientist to lead Baidu Research and the company's AI initiatives.[12] Under Ng's leadership, Baidu Research was established with labs in Silicon Valley and Beijing, and the AI group grew to approximately 1,300 people by 2017, including 300 researchers in Baidu Research.[12]
Formation of AI Group (2017-2018)
In January 2017, Baidu recruited former Microsoft executive Qi Lu as Chief Operating Officer to oversee its AI strategy. Under Lu's leadership, Baidu formally consolidated its various AI units into the Artificial Intelligence Group (AIG) in March 2017.[13]
Following Andrew Ng's departure in March 2017, Wang Haifeng was appointed to lead the expanded AI division, overseeing machine learning, big data, computer vision, natural language processing, speech technology, knowledge graph, and augmented reality.[14][15]
In May 2018, following Qi Lu's departure, Wang Haifeng was promoted to Senior Vice President and General Manager of AIG.[16] In May 2019, he was further promoted to Chief Technology Officer.[17]
Recent Developments (2019-2025)
In 2018, China's government designated Baidu as one of its "AI champions," recognizing the company's leadership in artificial intelligence development.[1] The company has continued to expand its AI capabilities, with the AIG growing to over 2,000 scientists and engineers.[18]
In March 2023, Baidu launched Ernie Bot (Wenxin Yiyan), one of China's first generative AI chatbots, competing with global models like ChatGPT.[19] The bot opened to the general public on August 31, 2023, after regulatory approval.[19]
In March 2025, Baidu released two new AI models: ERNIE 4.5, a multimodal foundation model, and ERNIE X1, a reasoning model, claiming performance on par with DeepSeek R1 at half the price.[3]
Timeline of Major Milestones
Date
Milestone
Description
2013
Institute of Deep Learning established
Baidu's first dedicated AI research lab focusing on deep learning technologies[11]
2014
Andrew Ng joins as Chief Scientist
Accelerated AI research and established Baidu Research[12]
2016
PaddlePaddle open-sourced
Released open-source deep learning framework to developers[8]
2016
Baidu Brain unveiled
Launched core AI engine and technology platform[20]
January 2017
Qi Lu joins as COO
Former Microsoft executive recruited to oversee AI strategy[13]
First autonomous driving test licenses in Dubai[26]
March 2025
ERNIE 4.5 & X1 release
Multimodal and reasoning models, Ernie Bot made free[3]
Core Technologies
ERNIE Foundation Models
ERNIE (Enhanced Representation through Knowledge Integration) is Baidu's series of large language models that has been in development since 2019.[22] The ERNIE family represents Baidu's core generative AI technology, with models evolving from knowledge-enhanced pre-training to multimodal capabilities.
Version History
Version
Release Date
Parameters
Key Features
ERNIE 1.0
March 2019
-
Introduced knowledge integration by masking entities and phrases, not just single words[27]
ERNIE 2.0
July 2019
-
Continual pre-training framework with multi-task learning[28]
ERNIE 3.0
December 2021
10 billion
Unified framework excelling at both language understanding and generation[23]
ERNIE 3.5
2023
-
Improved training throughput 2x, inference throughput 17x vs ERNIE 3.0[29]
ERNIE 4.0
October 2023
-
Full upgrade in understanding, generation, reasoning, and memory[25]
ERNIE 4.5
March 2025
-
Native multimodal (text, image, audio, video), priced at 1% of GPT-4.5's cost[3]
ERNIE X1
March 2025
-
First reasoning model with multimodal capabilities, performance on par with DeepSeek R1[3]
ERNIE 4.5
Released in March 2025, ERNIE 4.5 is Baidu's first native multimodal model, capable of understanding and generating text, images, audio, and video content.[3] Key specifications:
Input prices: RMB 0.004 per thousand tokens
Output prices: RMB 0.016 per thousand tokens
Performance claimed to outperform GPT-4.5 in multiple benchmarks
Priced at approximately 1% of GPT-4.5's cost
ERNIE X1
ERNIE X1 is Baidu's first reasoning model with multimodal capabilities, designed for deep-thinking tasks.[3] Features include:
Performance comparable to DeepSeek R1 at half the price
Support for advanced search, document Q&A, image understanding, and code interpretation
Technologies including Progressive Reinforcement Learning Method and End-to-End Training Approach
PaddlePaddle Deep Learning Framework
PaddlePaddle (PArallel Distributed Deep LEarning, Chinese: 飞桨; pinyin: Fēijiǎng) is Baidu's open-source deep learning platform, first developed in 2013 and open-sourced in 2016.[8] It serves as a direct competitor to global frameworks like Google's TensorFlow and Meta's PyTorch.
Key statistics and features:
Used by more than 4.77 million developers globally[8]
Baidu Brain is the company's core AI engine and technology platform, first unveiled in 2016.[20] It serves as the foundational infrastructure for all of Baidu's AI-related businesses and integrates:
Computer vision: Image recognition, facial recognition, and OCR
Natural Language Processing: Language understanding, sentiment analysis, machine translation
Voice Technology: Speech recognition and speech synthesis
Knowledge Graph: Large-scale structured knowledge base
Deep Learning: Underlying frameworks and models
As of 2022, Baidu Brain evolved to version 7.0, with over 1,397 technical capabilities used by 8 million developers.[31]
Products and Services
Apollo Autonomous Driving
Apollo is Baidu's autonomous driving platform, launched in 2013 with the open platform introduced in 2017.[32][21]
Apollo Open Platform
An open-source autonomous driving platform providing:
Complete hardware and software service solutions
Cloud data services
Testing tools and development frameworks
Version 9.0 with enhanced development and debugging experience[21]
Apollo Go
Apollo Go is Baidu's robotaxi service with significant operational milestones:
Fleet size: 1,000 vehicles globally (as of May 2025)[6]
Completed over 9 million rides in mainland China as of 2025[33]
In 2017, China's National Development and Reform Commission approved Baidu to lead the National Engineering Laboratory of Deep Learning Technology and Application.[47]
Focus areas:
Deep learning
Computer vision and auditory technology
Biometric identification
Human-computer interaction
Standardization service
Deep learning intellectual property
Leadership
Robin Li - Co-founder and CEO of Baidu
Wang Haifeng - Chief Technology Officer, Head of AIG and Baidu Research
Joined Baidu in 2010, promoted to Vice President in 2013
China's designated "AI champion" by the government (2018)[1]
China's largest portfolio of AI-related patents and patent applications (December 31, 2024)[5]
Apollo Go received Gold in Driverless Vehicles category at 2025 Edison Awards[5]
PaddlePaddle recognized as leading Chinese deep learning framework[8]
Over 20% of Baidu search results are AI-generated (2025)[52]
Controversies
2015 ImageNet incident: Baidu was accused of cheating on an AI image recognition test by submitting excessive entries, leading to a temporary ban from the competition[53]
2024 AI model concerns: CEO Robin Li warned about "too many" AI models in China potentially leading to wasted resources[54]
2025 doxxing scandal: Controversy involving Baidu's AI models led to calls for boycotts of its cloud services[55]
