v3.26.1
Document and Entity Information
 12 Months Ended
Dec. 31, 2025
shares
Document and Entity Information  
Document Type 20-F
Document Registration Statement false
Document Annual Report true
Document Period End Date Dec. 31, 2025
Current Fiscal Year End Date --12-31
Document Fiscal Year Focus 2025
Document Transition Report false
Document Shell Company Report false
Entity File Number 001-38665
Entity Registrant Name CooTek(Cayman)Inc.
Entity Incorporation, State or Country Code E9
Entity Address, Address Line One 7F, T3,
Entity Address, Address Line Two Lane 360, Xinlong Road
Entity Address, Address Line Three Minhang District
Entity Address, City or Town Shanghai
Entity Address, Postal Zip Code 201101
Entity Address, Country CN
Entity Well-known Seasoned Issuer No
Entity Voluntary Filers No
Entity Current Reporting Status Yes
Entity Interactive Data Current Yes
Entity Filer Category Non-accelerated Filer
Entity Emerging Growth Company false
Document Accounting Standard U.S. GAAP
Entity Shell Company false
Entity Central Index Key 0001734262
Document Fiscal Period Focus FY
Amendment Flag false
ICFR Auditor Attestation Flag false
Document Financial Statement Error Correction [Flag] false
Auditor Name Shandong Haoxin Certified Public Accountants Co., Ltd.
Auditor Firm ID 5035
Auditor Location Weifang, the People’s Republic of China
Business Contact  
Document and Entity Information  
Entity Address, Address Line One 7F, T3,
Entity Address, Address Line Two Lane 360, Xinlong Road
Entity Address, Address Line Three Minhang District
Entity Address, City or Town Shanghai
Entity Address, Postal Zip Code 201101
Entity Address, Country CN
Contact Personnel Name Karl Kan Zhang
Contact Personnel Email Address ir@cootek.com
Country Region 86
City Area Code 021
Local Phone Number 6485 6352
Ordinary shares  
Document and Entity Information  
Entity Common Stock, Shares Outstanding 4,837,255,456
Class A ordinary shares  
Document and Entity Information  
Title of 12(g) Security Class A ordinary shares, par value US$0.00001 per share
Entity Common Stock, Shares Outstanding 4,591,030,991
Class B ordinary shares  
Document and Entity Information  
Entity Common Stock, Shares Outstanding 246,224,465
ADS  
Document and Entity Information  
Title of 12(g) Security American depositary shares, each representing 650 Class A ordinary shares