v3.26.3
Schedule of Reverse Recapitalization (Details) - shares
 1 Months Ended 9 Months Ended 12 Months Ended
Oct. 22, 2025
Apr. 30, 2026
Feb. 28, 2026
Sep. 30, 2026
Dec. 31, 2025
Jun. 30, 2026
Sep. 30, 2025
Jun. 30, 2025
Dec. 31, 2024
ReverseRecapitalizationLineItems [Line Items]                  
Conversion of stock 8,048,770                
Issuance of common stock upon exercise of stock option, shares       26,321          
Consilium Frontier Equity Fund LP [Member]                  
ReverseRecapitalizationLineItems [Line Items]                  
Issuance of common stock upon cashless exercise of stock option, shares 3,320,241                
Fusemachines Inc [Member]                  
ReverseRecapitalizationLineItems [Line Items]                  
Converted into common stock 5,950,673                
Issuance of common stock upon cashless exercise of stock option, shares 7,967,237       45,000        
Common Class A [Member] | CSLM Acquisition Corp [Member]                  
ReverseRecapitalizationLineItems [Line Items]                  
Conversion of stock 1,976,050                
Converted into common stock 901,955                
Class A & Class B Common Stock [Member] | CSLM Acquisition Corp [Member]                  
ReverseRecapitalizationLineItems [Line Items]                  
Converted into common stock 4,743,749                
IPO [Member] | CSLM Acquisition Corp [Member]                  
ReverseRecapitalizationLineItems [Line Items]                  
Issuance of common stock upon exercise of stock option, shares 1,897,486                
PIPE Financing [Member]                  
ReverseRecapitalizationLineItems [Line Items]                  
Issuance of common stock upon cashless exercise of stock option, shares 1,184,000                
Common Stock [Member]                  
ReverseRecapitalizationLineItems [Line Items]                  
Converted into common stock 1,897,486                
Issuance of common stock upon exercise of stock option, shares   19,741 1,715 26,321 [1],[2]          
Issuance of common stock upon cashless exercise of stock option, shares 408,639   974 21,456 [1],[2]          
Total shares of Fusemachines Inc. common stock outstanding immediately after the Merger [1],[2]       32,424,711 28,938,266 28,985,302 7,937,626 7,270,964 7,264,192
Common Stock [Member] | Consilium Frontier Equity Fund LP [Member]                  
ReverseRecapitalizationLineItems [Line Items]                  
Total shares of Fusemachines Inc. common stock issued to CSLM security holders 12,456,070                
Common Stock [Member] | Fusemachines Inc [Member]                  
ReverseRecapitalizationLineItems [Line Items]                  
Total shares of Fusemachines Inc. common stock outstanding immediately after the Merger 28,350,030                
Common Stock [Member] | 3rd Amended and Restated Promissory Note [Member]                  
ReverseRecapitalizationLineItems [Line Items]                  
Conversion of stock 408,639                
[1] In connection with the consummation of the business combination, the Company adopted a new capital structure and amended the par value of its common stock from $0.00001 per share to $0.0001 per share. Accordingly, the historical equity presentation has been adjusted to reflect the revised par value of the Company’s common stock. The change resulted in a reclassification of amounts within stockholders’ equity from additional paid-in capital to common stock to reflect the increased par value per share. This reclassification had no impact on total stockholders’ deficit.
[2] The number of shares of convertible preferred stock, common stock and treasury stock issued and outstanding prior to the Merger have been retroactively adjusted by the Exchange Ratio to give effect to the reverse recapitalization treatment of the Merger.