v3.26.3
Schedule of Reverse Recapitalization (Details) - shares
 1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Dec. 23, 2025
Oct. 22, 2025
Apr. 30, 2026
Feb. 28, 2026
Aug. 31, 2025
Sep. 30, 2024
Jun. 30, 2024
Apr. 30, 2024
Jun. 30, 2026
 [1],[2]
Jun. 30, 2026
Dec. 31, 2025
Dec. 31, 2024
Mar. 31, 2026
 [1],[2]
Jun. 30, 2025
 [1],[2]
Mar. 31, 2025
 [1],[2]
Dec. 31, 2023
Issuance of shares as a result of Conversion of convertible notes, shares   8,048,770                            
Issuance of common stock upon exercise of stock option, shares   8,048,770               26,321 6,772          
Consilium Frontier Equity Fund LP [Member]                                
Issuance of common stock upon cashless exercise of stock option, shares   3,320,241                            
Fusemachines Inc [Member]                                
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]                                
Issuance of shares as a result of Conversion of convertible notes, shares   1,976,050                            
Converted into common stock   901,955                            
Class A & Class B Common Stock [Member] | CSLM Acquisition Corp [Member]                                
Converted into common stock   4,743,749                            
IPO [Member]                                
Issuance of common stock upon cashless exercise of stock option, shares   18,975,000                            
IPO [Member] | CSLM Acquisition Corp [Member]                                
Issuance of common stock upon exercise of stock option, shares   1,897,486                            
PIPE Financing [Member]                                
Issuance of common stock upon cashless exercise of stock option, shares   1,184,000                            
Common Stock [Member]                                
Issuance of shares as a result of Conversion of convertible notes, shares                     1,976,050          
Converted into common stock   1,897,486                            
Issuance of common stock upon exercise of stock option, shares     19,741 1,715 745,896       26,321 26,321 [1],[2]   17,205        
Issuance of common stock upon cashless exercise of stock option, shares 588,235 408,639   974 666,662 7,500 7,500 7,500 19,741 21,456 [1],[2] 745,896          
Total shares of Fusemachines Inc. common stock issued to CSLM security holders                     12,456,071          
Total shares of Fusemachines Inc. common stock outstanding immediately after the Merger                 28,985,302 28,985,302 [1],[2] 28,938,266 [1],[2] 7,264,192 [1],[2] 28,939,240 7,270,964 7,270,964 6,067,341
Common Stock [Member] | Previously Reported [Member]                                
Total shares of Fusemachines Inc. common stock outstanding immediately after the Merger                       11,039,388 [1],[2]       9,220,534
Common Stock [Member] | Consilium Frontier Equity Fund LP [Member]                                
Total shares of Fusemachines Inc. common stock issued to CSLM security holders   12,456,071                            
Common Stock [Member] | Consilium Frontier Equity Fund LP [Member] | Previously Reported [Member]                                
Total shares of Fusemachines Inc. common stock issued to CSLM security holders   12,456,070                            
Common Stock [Member] | Fusemachines Inc [Member]                                
Total shares of Fusemachines Inc. common stock outstanding immediately after the Merger   28,350,031                            
Common Stock [Member] | Fusemachines Inc [Member] | Previously Reported [Member]                                
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]                                
Issuance of shares as a result of Conversion of convertible notes, shares   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’ deficit 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.