v3.26.1
Cover
 12 Months Ended
Dec. 31, 2025
Entity Addresses [Line Items]  
Document Type S-1/A
Amendment Flag true
Amendment Description Amendment No. 1
Entity Registrant Name FUSEMACHINES INC.
Entity Central Index Key 0002033383
Entity Primary SIC Number 6770
Entity Tax Identification Number 98-1602789
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One 251 West 30th Street
Entity Address, Address Line Two 5th Floor
Entity Address, City or Town New York
Entity Address, State or Province NY
Entity Address, Postal Zip Code 10001
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 251 West 30th Street
Entity Address, Address Line Two 5th Floor
Entity Address, City or Town New York
Entity Address, State or Province NY
Entity Address, Postal Zip Code 10001
City Area Code (347)
Local Phone Number 212-5075
Contact Personnel Name Sameer Maskey