v3.26.1
Cover - shares
6 Months Ended
Jun. 30, 2026
Aug. 13, 2026
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Transition Report false  
Entity Interactive Data Current Yes  
Amendment Flag false  
Document Period End Date Jun. 30, 2026  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q2  
Entity Registrant Name Alpha Cognition Inc.  
Entity Central Index Key 0001655923  
Entity Tax Identification Number 00-0000000  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
Entity Filer Category Non-accelerated Filer  
Entity File Number 001-42403  
Entity Shell Company false  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Small Business true  
Entity Incorporation, State or Country Code A1  
Entity Address, Address Line One 1452 Hughes Rd. Ste. 200  
Entity Address, City or Town Grapevine  
Entity Address, State or Province TX  
Entity Address, Postal Zip Code 76051  
City Area Code (858)  
Local Phone Number 344-4375  
Entity Common Stock, Shares Outstanding   21,777,868
Title of 12(b) Security Common Stock, no par value  
Trading Symbol ACOG  
Security Exchange Name NASDAQ