Baidu Baike (/ˈbaɪduː ˈbaɪkə/; Chinese: 百度百科; pinyin: Bǎidù Bǎikē; lit. 'Baidu Encyclopedia', also known as Baidu Wiki) is a semi-regulated Chinese-language collaborative online encyclopedia owned by the Chinese technology company Baidu. Modelled after Wikipedia, it was launched on 21 April 2008. As of 2024, it claims more than 27 million entries and 7.7 million editors — the largest number of entries of any Chinese-language online encyclopedia. Baidu Baike has been criticised for its censorship, copyright violations, commercialist practices and unsourced or inaccurate information.