v3.26.3
Cover
 6 Months Ended
Jun. 30, 2026
Entity Addresses [Line Items]  
Document Type S-1
Amendment Flag false
Entity Registrant Name FUSEMACHINES INC.
Entity Central Index Key 0002033383
Entity Primary SIC Number 7373
Entity Tax Identification Number 98-1602789
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One 200 West 41st Street
Entity Address, Address Line Two 21st Floor
Entity Address, City or Town New York,
Entity Address, State or Province NY
Entity Address, Postal Zip Code 10036
City Area Code (347)
Local Phone Number 212-5075
Entity Filer Category Non-accelerated Filer
Entity Small Business true
Entity Emerging Growth Company true
Elected Not To Use the Extended Transition Period false
Business Contact [Member]  
Entity Addresses [Line Items]  
Entity Address, Address Line One 200 West 41st Street
Entity Address, Address Line Two 21st Floor
Entity Address, City or Town New York
Entity Address, State or Province NY
Entity Address, Postal Zip Code 10036
City Area Code (347)
Local Phone Number 212-5075
Contact Personnel Name Sameer Maskey