WhereIsAtlas · Internet
Baidu
China's search giant, which rode a near-monopoly on Chinese-language search into advertising trouble and then bet the company on artificial intelligence
Active — Baidu is still China's best-known search engine, but the company that once looked like an unassailable monopoly now makes its case as an AI business. Medical-advertising scandals, the rise of short-video feeds and chatbots that answer questions directly have squeezed the search business that built it.
Baidu was founded in January 2000 in Beijing by Robin Li and Eric Xu. Li had already built a hyperlink-ranking search system called RankDex in the 1990s, an approach that anticipated the algorithm Google later made famous, and Baidu was built on that idea: a search engine tuned to Chinese-language pages. The name comes from a line in an 800-year-old poem by Xin Qiji, about searching for someone a thousand times over.
It grew into the dominant search engine in China and listed on the Nasdaq in August 2005, priced at $27 a share and surging on its first day of trading. When Google withdrew from mainland China in 2010, Baidu's most formidable competitor left the field, and Baidu expanded into an ecosystem of its own: Baidu Baike, a Chinese-language encyclopedia; Baidu Tieba, message boards built around search terms; Baidu Zhidao, a question-and-answer service; Baidu Map; Baidu Cloud; and the video platform iQiyi, which it listed separately in New York in 2018.
The business that funded all of it, however, was search advertising — and that became Baidu's deepest vulnerability. In 2016 the death of a 21-year-old student named Wei Zexi, who had pursued an experimental cancer treatment he found through a Baidu listing, triggered national outrage and regulatory demands that Baidu clean up its paid medical results. A second scandal over medical advertising followed in 2018. In the first quarter of 2019, Baidu reported its first quarterly loss since going public, and its advertising growth began to slow as users drifted toward short-video feeds and rival apps.
Baidu's answer has been artificial intelligence. It launched the ERNIE language model in 2019 and followed it with the Ernie Bot chatbot in March 2023; it has pushed its Apollo autonomous-driving platform and the Apollo Go robotaxi service; it designs its own Kunlun AI chips; and it sells AI cloud services. The company remains the clear leader in Chinese-language search and one of the country's largest technology firms, reported on Nasdaq and, since March 2021, in Hong Kong as well.
The open question is whether AI replaces the search business or rescues it. Baidu's own chatbot, like the assistants its rivals now ship, answers questions in a sentence rather than sending users to ten blue links — the format Baidu monetised for two decades. Its revenue has come under pressure as AI returns have yet to offset the decline in advertising, which is why Baidu is now described less as China's Google than as a search company trying to become something else.
Quick facts
- Founded
- January 2000, Beijing
- Founders
- Robin Li and Eric Xu
- Name origin
- A line from an 800-year-old Song dynasty poem about searching a thousand times
- Nasdaq listing
- August 2005, priced at $27 a share
- Dominant product
- Chinese-language web search
- Ecosystem
- Baidu Baike, Baidu Tieba, Baidu Zhidao, Baidu Map, iQiyi, Baidu Cloud
- Darkest chapter
- The 2016 Wei Zexi medical-advertising scandal
- Low point
- First quarterly loss as a public company, Q1 2019
- AI bet
- ERNIE and Ernie Bot, Apollo autonomous driving, Kunlun chips
- Structure
- Cayman-incorporated holding company; listed on Nasdaq and, from 2021, in Hong Kong
- Today
- Still China's leading search engine, repositioning as an AI company
Lineage — where the name went
Baidu's family tree is a founder story and a structure story at once: two engineers, a holding company incorporated in the Cayman Islands that owns Chinese operating businesses through variable interest entities, and a product line that now leans on AI.
- 2000 — Robin Li founded Baidu, Inc. (with Eric Xu, in Beijing)
- 2000 — Eric Xu founded Baidu, Inc.
- 2003 — Baidu, Inc. created Baidu Tieba
- 2006 — Baidu, Inc. created Baidu Baike
- 2010 — Baidu, Inc. created iQiyi (listed on Nasdaq in 2018)
- 2017 — Baidu, Inc. created Apollo
- 2018 — Baidu, Inc. created Kunlun
- 2019 — Baidu, Inc. created ERNIE / Ernie Bot (Ernie Bot followed in March 2023)
Entities in this tree: Robin Li (person, 2000); Eric Xu (person, 2000); Baidu, Inc. (company, 2000); Baidu Tieba (product, 2003); Baidu Baike (product, 2006); iQiyi (company, 2010); Apollo (product, 2017); Kunlun (product, 2018); ERNIE / Ernie Bot (product, 2019)
Sources
- Baidu - Wikipedia — Wikipedia (2026-09-15)
- China's Baidu revenue drops as AI returns fail to offset ad decline — Reuters (2026-09-15)
- Baidu posts first quarterly loss since IPO, top exec quits — People's Daily (2026-09-15)
- Baidu, Inc. Files Its Annual Report on Form 20-F — Nasdaq (2026-09-15)