v3.26.1
Document and Entity Information - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Mar. 09, 2026
Jun. 30, 2025
Document Information        
Document Type 10-K      
Document Annual Report true      
Document Transition Report false      
Document Period End Date Dec. 31, 2025      
Entity File Number 001-40916      
Entity Registrant Name MultiSensor AI Holdings, Inc.      
Entity Incorporation, State or Country Code DE      
Entity Tax Identification Number 86-3938682      
Entity Address, Address Line One 24 Greenway Plaza      
Entity Address, Adress Line Two Suite 1800      
Entity Address, City or Town Houston      
Entity Address State Or Province TX      
Entity Address, Postal Zip Code 77046      
City Area Code 866      
Local Phone Number 861-0788      
Entity Well-known Seasoned Issuer No      
Entity Voluntary Filers No      
Entity Current Reporting Status Yes      
Entity Interactive Data Current Yes      
Entity Filer Category Non-accelerated Filer      
Entity Small Business true      
Entity Emerging Growth Company true      
Entity Ex Transition Period true      
ICFR Auditor Attestation Flag false      
Document Financial Statement Error Correction [Flag] false      
Entity Shell Company false      
Entity Common Stock, Shares Outstanding     80,491,889  
Entity Public Float       $ 20.4
Entity Central Index Key 0001863990      
Current Fiscal Year End Date --12-31      
Document Fiscal Year Focus 2025      
Document Fiscal Period Focus FY      
Amendment Flag false      
DOCUMENTS INCORPORATED BY REFERENCE

Portions of the registrant’s definitive Proxy Statement relating to its 2026 Annual Meeting of Stockholders, to be filed with the Securities and Exchange Commission within 120 days after the end of the fiscal year to which this report relates, are incorporated by reference into Part III of this Annual Report on Form 10-K where indicated.

      
Auditor Name WEAVER AND TIDWELL, L.L.P. Deloitte & Touche LLP    
Auditor Location Austin, TX Houston, TX    
Auditor Firm ID 410 34    
Common Stock        
Document Information        
Title of 12(b) Security Common stock, $0.0001 par value per share      
Trading Symbol MSAI      
Security Exchange Name NASDAQ      
Warrants        
Document Information        
Title of 12(b) Security Warrants to purchase common stock      
Trading Symbol MSAIW      
Security Exchange Name NASDAQ