v3.26.1
Cover - shares
 3 Months Ended
Mar. 31, 2026
May 08, 2026
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Mar. 31, 2026  
Entity Transition Report false  
Entity File Number 001-39990  
Entity Registrant Name Elicio Therapeutics, Inc.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 11-3430072  
Entity Address, Address Line One 451 D Street, 5th Floor  
Entity Address, City or Town Boston  
Entity Address, State or Province MA  
Entity Address, Postal Zip Code 02210  
City Area Code 857  
Local Phone Number 209-0050  
Title of 12(b) Security Common Stock, par value $0.01  
Trading Symbol ELTX  
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 true  
Entity Ex Transition Period false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   19,086,081
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q1  
Current Fiscal Year End Date --12-31  
Entity Central Index Key 0001601485  
Amendment Flag false