v3.26.1
COVER - shares
3 Months Ended
Mar. 31, 2026
May 01, 2026
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Mar. 31, 2026  
Document Transition Report false  
Entity File Number 001-39463  
Entity Registrant Name Ouster, Inc.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 86-2528989  
Entity Address, Address Line One 350 Treat Avenue  
Entity Address, City or Town San Francisco  
Entity Address, State or Province CA  
Entity Address, Postal Zip Code 94110  
City Area Code 415  
Local Phone Number 949-0108  
Title of 12(b) Security Common stock, $0.0001 par value per share  
Trading Symbol OUST  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   63,672,949
Amendment Flag false  
Entity Central Index Key 0001816581  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q1  
Current Fiscal Year End Date --12-31