Overview

Sogou is a Chinese internet technology company and Tencent subsidiary whose best-known products are the Sogou search engine and Sogou Input Method. The business began inside Sohu as a search project led by Wang Xiaochuan, who had joined Sohu after graduating from Tsinghua University. The Sogou search engine went live in August 2004, initially operating as a separate division rather than as an independent company. Its strategic importance increased after the company developed Sogou Pinyin in 2006. By applying search-engine data and language analysis to keyboard input, Sogou created an input platform that could predict popular words and phrases and became one of the most widely used Chinese input methods on desktop and mobile devices. Sogou’s development was shaped by a series of ownership, financing, and distribution changes. Around 2010, when its search revenue share remained below one percent, Wang Xiaochuan sought outside investment and reached an agreement associated with Alibaba founder Jack Ma. Sohu subsequently reorganized Sogou as a more independent business with a separate profit-and-loss structure and introduced employee stock options. After strong growth, Sohu bought back Ma’s shares in 2012. In 2013, Sogou entered a deeper strategic relationship with Tencent: Tencent invested approximately US$448 million and merged its SoSo search operation into Sogou. This gave Sogou access to Tencent distribution, including QQ and other Tencent products. Sogou later became the default search engine for QQ.com and developed the ability to search WeChat public-account content. The company broadened its portfolio beyond conventional web search. Its search products organized webpages and vertical information across areas such as news, images, music, video, maps, and other categories. Search advertising became its principal commercial engine, accounting for more than 90 percent of reported revenue in the period described in the company’s public materials. Sogou also developed a browser, voice-recognition systems, translation tools, a lip-reading system, child-oriented GPS smartwatches, and portable translation hardware. Its artificial-intelligence work included speech recognition, machine translation, natural-language processing, and an AI-generated news-anchor project conducted with Xinhua News Agency. Sogou became a public company on the New York Stock Exchange on November 9, 2017, under the symbol SOGO. The offering was presented as a way to support continued investment in artificial intelligence and related technologies. In 2020, Tencent proposed acquiring Sogou for approximately US$2.1 billion. The transaction was subsequently completed, and Sogou was taken private and delisted in 2021. The brand continues as part of Tencent’s ecosystem, with its operations and technologies connected to Tencent products and services. Its Beijing offices are near Tsinghua University, and the company has also maintained offices in Chengdu and a research-and-development center in Guangzhou. Sogou’s present identity is therefore that of a Tencent-owned Chinese search, language-input, and AI technology brand rather than an independently listed public company.

History

Sogou originated as a search-engine project inside Sohu. After joining Sohu, Tsinghua graduate Wang Xiaochuan led a small team that developed the service. The Sogou search engine launched on August 3, 2004, as a distinct Sohu division. The name combines the Chinese characters commonly rendered as “search dog,” reflecting the service’s search-oriented identity. In 2006, Sogou introduced Sogou Pinyin, a Chinese input method that used analysis of internet language and frequently used expressions to improve word prediction. The product became central to the company’s identity and helped differentiate Sogou from general search competitors. In 2007, the company established a search-related curriculum with Tsinghua University, linking recruitment, technical training, and research. That year, Sogou also won a patent-infringement case concerning an input method against Google, according to the referenced account. Sogou launched its browser in 2008; the browser later adopted a dual-engine architecture using WebKit and Internet Explorer’s Trident engine and connected to cloud-based services intended to identify malicious websites and software. Sogou’s early search position was weak. By 2010, its search-revenue share was reported as below one percent. Wang Xiaochuan pursued external investment and met Jack Ma, leading to an arrangement in which Sohu agreed to make Sogou more organizationally independent, with a separate profit-and-loss line and employee stock options. Growth subsequently accelerated. In 2012, Sohu repurchased shares associated with Ma’s investment. In 2013, Sogou reached a strategic agreement with Tencent. Tencent invested approximately US$448 million, and its SoSo search operation was combined with Sogou. The relationship gave Sogou access to Tencent distribution and platform data. By 2014, Sogou was the default search engine for QQ.com and had become the only search engine described in the source as able to search WeChat public-account content. The company reported profitability by early 2015. Sogou continued expanding into language and artificial-intelligence technologies. It began developing voice recognition in 2011 and later demonstrated Chinese-English voice translation. In 2016, it partnered with Microsoft Bing for English-language search results and Chinese translation, and it announced a US$30 million donation and joint initiative with Tsinghua University to support an artificial-intelligence institute. In 2017, Sogou introduced or demonstrated additional AI capabilities, including a lip-reading system, while its Internet-of-Things subsidiary sold child-focused GPS smartwatches. The company launched a Travel Translator and Travel Pen in March 2018, with the products reportedly selling out on their first day. It also worked with Xinhua News Agency on an AI-generated news anchor. The company entered the public markets in November 2017, listing on the New York Stock Exchange as SOGO. Public-company disclosures described search advertising as the dominant revenue source and emphasized investment in AI. Sogou also pursued investments and partnerships outside its core search products, including ownership of the multilingual Typany keyboard application, investment participation in Zhihu financing rounds, and seed funding for Snack Videos, an AI-oriented short-form learning application. In 2020, Tencent proposed buying Sogou for approximately US$2.1 billion. The transaction was completed in 2021, after which Sogou became a Tencent subsidiary and its public listing ended. Later partnership activity included a 2022 arrangement with Tobii Dynavox involving communication-assistance devices in China.

2022
Accessibility-device partnership
[1]Sogou - Wikipediaen.wikipedia.org
Sogou partnered with Tobii Dynavox to sell communication-assistance devices in China.
2021
Sogou becomes a Tencent subsidiary
[1]Sogou - Wikipediaen.wikipedia.org
The acquisition was completed and Sogou was taken private and removed from the NYSE.
2020
Tencent announces acquisition proposal
[1]Sogou - Wikipediaen.wikipedia.org
Tencent proposed acquiring Sogou for approximately US$2.1 billion, subject to transaction and regulatory processes.
2018
Travel translation hardware launches
[1]Sogou - Wikipediaen.wikipedia.org
Sogou introduced the Travel Translator and Travel Pen, which the company said sold out on their first day.
2017
Sogou lists in New York
[1]Sogou - Wikipediaen.wikipedia.org
Sogou completed its NYSE IPO under the ticker SOGO on November 9.
2016
AI and language partnerships deepen
[1]Sogou - Wikipediaen.wikipedia.org
Sogou partnered with Microsoft Bing for English search and translation and supported an artificial-intelligence initiative with Tsinghua University.
2014
Tencent distribution expands
[1]Sogou - Wikipediaen.wikipedia.org
Sogou became the default search engine for QQ.com and expanded its ability to search WeChat public-account content.
2013
Tencent invests in and combines SoSo with Sogou
[1]Sogou - Wikipediaen.wikipedia.org
Tencent invested approximately US$448 million and its SoSo search operation was merged into Sogou.
2010
Sogou gains greater operating independence
[1]Sogou - Wikipediaen.wikipedia.org
After seeking outside investment, Sogou was reorganized within Sohu with a separate profit-and-loss structure and employee stock options.
2008
Sogou Browser launches
[1]Sogou - Wikipediaen.wikipedia.org
Sogou entered the browser market with a product later associated with dual rendering engines and cloud-based security functions.
2007
Tsinghua search curriculum established
[1]Sogou - Wikipediaen.wikipedia.org
Sogou and Tsinghua University created a search curriculum to support engineering recruitment and technical development.
2006
Sogou Pinyin is introduced
[1]Sogou - Wikipediaen.wikipedia.org
Sogou launched its Chinese input method, using internet language analysis to improve prediction of common words and phrases.
2004
Sogou search engine launches
[1]Sogou - Wikipediaen.wikipedia.org
The search engine went live on August 3 and operated as a separate division of Sohu.
2003
Sogou search project begins within Sohu
[1]Sogou - Wikipediaen.wikipedia.org
Wang Xiaochuan and a team associated with Tsinghua University began developing a search engine for Sohu.

Products and positioning

A Chinese search and language-technology provider using search data, natural-language processing, speech recognition, and artificial intelligence to serve consumers and Tencent-platform users.

Search engine · 2004
Sogou Search
Sogou’s core search service indexes and classifies web information across general and vertical categories, including news, images, video, music, maps, and other specialized content. Search advertising was the main commercial model described in the company’s public materials. Through Tencent relationships, the service was integrated with QQ products and used in experiments involving general web search inside WeChat.
Input method · 2006
Sogou Input Method
Initially released as Sogou Pinyin in 2006, Sogou Input Method applies language modeling and analysis of frequently used online expressions to predict Chinese words and phrases. It became one of Sogou’s most recognizable consumer products and extended the company’s search expertise into everyday desktop and mobile text entry.
Web browser · 2008
Sogou Browser
Sogou Browser launched in 2008 and later used a dual-core approach involving WebKit and Microsoft Internet Explorer’s Trident engine. The product also connected to cloud services intended to help recognize malicious websites and software.
Artificial intelligence and speech technology · 2011
Sogou Voice Recognition Technology
Sogou has worked on voice recognition since 2011, including Chinese-English voice translation and connected-device applications. The technology formed part of the company’s broader artificial-intelligence strategy and supported voice-oriented search and language products.
Internet of Things hardware · 2017
Sogou Smartwatch
Through an Internet-of-Things subsidiary, Sogou sold GPS-positioning smartwatches aimed particularly at children. The watches represented an expansion from software and search into connected consumer hardware.
Translation hardware · 2018
Travel Translator and Travel Pen
Launched in March 2018, these portable devices applied Sogou’s speech and language technologies to travel translation use cases. The company reported that both products sold out on their first day.
Mobile keyboard application
Typany
Typany is a keyboard application associated with Sogou’s international expansion. The application supports more than 100 languages and emphasizes voice recognition and language recognition capabilities.

Controversies

2023
Sogou Input Method encryption flaw may expose user input
A Citizen Lab study at the University of Toronto found vulnerabilities in the proprietary encryption mechanisms of Sogou Input Method's Windows, Android and iOS versions, potentially allowing network eavesdroppers to decrypt sensitive input. After the research team disclosed the issue, Sogou released fixed versions before July 20, 2023. The report describes an exploitable security vulnerability and does not claim on that basis that a large-scale data breach had occurred. Progress: independent research disclosure; the vendor has released fixed versions. Subject: Sogou Input Method.
Source
2021
Sogou Input Method notified by cyberspace regulator for illegal personal information collection and taken down
On April 30, 2021, the Cyberspace Administration of China notified 33 apps, including input methods, of illegal collection and use of personal information. Sogou Input Method (version 10.24.1) was found to have issues including violating the necessity principle and collecting personal information unrelated to the services it provides, and was required to rectify within 10 working days. Earlier, in February 2021, the Ministry of Industry and Information Technology also included Sogou products in a notification list of apps infringing user rights. Because rectification was not completed on schedule, Sogou Input Method and others were subsequently removed from multiple app stores. Sogou was relisted after completing rectification; the incident pushed the input method industry toward standardized personal information collection.
Source
2020
Sogou fined over advertising claim
In a controversy noted in 2020, the Haidian District Market Supervision Administration fined Sogou RMB 30,000. The authority determined that Sogou's website had published an advertising claim describing its map app as having the strongest navigation functions. The fine followed that determination regarding the advertising wording on the website.
Source

Brand decisions

2020
Tencent acquisition proposalM&A
Background
Tencent already had a strategic relationship with Sogou and sought to consolidate ownership of the search and language-technology business.
Action taken
Tencent proposed acquiring Sogou for approximately US$2.1 billion, pending acceptance and regulatory permissions.
Aftermath
The transaction was completed in 2021, after which Sogou became a Tencent subsidiary and was delisted.
Proposed acquisition value. Approximately US$2.1 billion (July 2020)
Source
2017
Public listing on the New York Stock ExchangeOther
Background
Sogou sought capital to expand its search business and accelerate artificial-intelligence development.
Action taken
The company completed an initial public offering on the NYSE under the ticker SOGO.
Aftermath
Sogou operated as a publicly traded company until its acquisition and privatization by Tencent.
IPO proceeds. US$585 million raised (November 2017)
Source
2013
Combine Tencent SoSo search with SogouM&A
Background
Sogou was seeking strategic partnerships and broader distribution after rapid growth, while Tencent operated its own SoSo search service.
Action taken
Tencent invested approximately US$448 million and combined SoSo’s search operation with Sogou.
Aftermath
The arrangement strengthened Sogou’s access to Tencent products and helped make it the default search engine for QQ.com.
Tencent investment. Approximately US$448 million investment (2013)
Source

Recent events

Unconfirmed
Reported2021.09.23
Tencent completes merger with Sogou[8]腾讯与搜狗完成合并finance.sina.com.cn
Sogou announced that its merger with Tencent was completed. Sogou became an indirect wholly owned subsidiary of Tencent Holdings and was to delist while continuing to operate as the surviving company.
2021.09.24
Reported2021.09.24
Tencent and Sogou complete merger[9]腾讯与搜狗完成合并finance.sina.com.cn
Sogou announced that it had completed its merger with Tencent and would become an indirectly wholly owned subsidiary of Tencent Holdings while continuing to operate as the surviving company. Sogou also said its ADS trading had been suspended and its outstanding shares were acquired at $9 per ADS. Sohu confirmed the equity transaction was complete and that it would receive $1.18 billion and retain no Sogou equity.
Unconfirmed
Sogou completes merger with Tencent[10]搜狗与腾讯完成合并nbd.com.cn
Sogou announced that its merger with Tencent was completed; Sogou would continue as the surviving company and become an indirect wholly owned subsidiary of Tencent Holdings, and it completed its delisting.
2020.09.30
Sogou signs privatization agreement with Tencent affiliates[11]搜狗与腾讯附属公司签署私有化协议chinaz.com
Sogou signed a privatization agreement with THL A21 Limited, TitanSupernova Limited and Tencent Mobility Limited. The transaction was expected to be completed in the fourth quarter of 2020.
2020.09.29
Reported2020.09.30
Tencent and Sogou reach final privatization agreement[12]腾讯与搜狗达成最终私有化交易协议news.zol.com.cn
Sogou announced that it had reached a final agreement with Tencent on a privatization transaction under which Sogou would become Tencent's wholly owned subsidiary; the transaction was expected to be completed in the fourth quarter of 2020.
2020.07.29
Reported2020.07.29
Tencent makes non-binding offer for Sogou[13]腾讯向搜狗发出非约束性收购要约capital.people.com.cn
Tencent made a preliminary, non-binding offer to acquire Sogou’s remaining shares at $9 per ADS. The article reports that the offer was made ahead of publication; the deal had not been completed.
Unconfirmed
Tencent announces full acquisition of Sogou[14]腾讯宣布全资收购搜狗eeo.com.cn
The article reports Tencent's proposed full acquisition of Sogou. Sogou said it would appoint an independent committee to discuss and study the offer; Tencent had not responded as of publication.
Unconfirmed
Tencent makes preliminary offer to acquire remaining Sogou shares[15]腾讯提出收购搜狗剩余股份的初步要约tmtpost.com
Sogou said Tencent had made a preliminary, non-binding offer to acquire its remaining shares for $9 per ADS. Sogou said it would discuss and evaluate the proposal; the source does not establish that a deal was completed.
2020.06.24
Reported2020.06.24
Sogou announces CFO Zhou Yi’s departure[16]搜狗宣布首席财务官周毅辞职tech.sina.com.cn
Sogou announced that Zhou Yi would resign as chief financial officer for personal reasons, with the personnel change to take effect on June 30, 2020.
Unconfirmed
Tangmao A10 children's smartwatch launch[17]糖猫A10儿童智能手表发布zhongce.sina.com.cn
Sogou announced the Tangmao A10, a children's smartwatch with calling, positioning, learning and social features.