v3.26.1
Cover - shares
 3 Months Ended
Mar. 31, 2026
Jun. 01, 2026
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Mar. 31, 2026  
Document Transition Report false  
Entity File Number 001-43124  
Registrant Name Octave Intelligence plc  
Entity Incorporation, State or Country Code L2  
Entity Tax Identification Number 98-1878833  
Entity Address, Address Line One 305 Intergraph Way  
Entity Address, City or Town Madison  
Entity Address, State or Province AL  
Entity Address, Postal Zip Code 35758  
City Area Code 256  
Local Phone Number 730-2000  
Title of 12(b) Security Class B Ordinary Shares, $0.01 Par Value  
Trading Symbol OCTV  
Security Exchange Name NASDAQ  
Entity Current Reporting Status No  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Amendment Flag false  
Document Fiscal Period Focus Q1  
Document Fiscal Year Focus 2026  
Current Fiscal Year End Date --12-31  
Central Index Key 0002083632  
Common Class A    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   11,025,000
Common Class B    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   257,412,788