v3.26.1
Organization and Nature of the Business - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
 1 Months Ended 6 Months Ended
Oct. 07, 2025
Jan. 23, 2024
Aug. 31, 2022
Mar. 12, 2021
Jul. 31, 2025
Nov. 30, 2022
Jun. 30, 2026
Apr. 30, 2026
Dec. 31, 2025
Jan. 31, 2024
Jan. 22, 2024
Schedule Of Equity Method Investments [Line Items]                      
Equity transfer agreement         In July 2025, Adicet Therapeutics entered into an equity transfer agreement with the then-stockholders of Shanghai Adicet to acquire 100% equity interests of Shanghai Adicet from its then-stockholders (the Acquisition).            
Sale of Stock, Price Per Share $ 16                    
Shares were sold at a price               $ 0.0001     $ 38.3984
Common stock price per share $ 0.0016           $ 0.0001 $ 0.0001 $ 0.0001   $ 0.0016
Issuance of common stock             9,361,371   9,586,770   332,812
Estimated offering expenses   $ 91,700                  
Accumulated deficit             $ (656,299)   $ (614,697)    
Adicet Therapeutics [Member]                      
Schedule Of Equity Method Investments [Line Items]                      
Accumulated deficit             $ (656,300)        
Underwriting Agreement                      
Schedule Of Equity Method Investments [Line Items]                      
Discount on underwriters warrant 6.00%                    
Estimated offering expenses $ 74,800                    
2021 Sales Agreement                      
Schedule Of Equity Method Investments [Line Items]                      
Aggregate number of shares sold     163,233                
Sale of Stock, Price Per Share     $ 275.68                
Sales agent commissions and expenses       $ 43,400              
Aggregate net proceed                   $ 19,300  
Common Stock not sold           $ 30,000          
Common stock price per share     $ 0.0001                
Additional Common Stock not sold           70,000          
Aggregate gross proceeds           $ 100,000          
Common Stock [Member]                      
Schedule Of Equity Method Investments [Line Items]                      
Issuance of common stock                     332,813
Common Stock [Member] | Jefferies LLC                      
Schedule Of Equity Method Investments [Line Items]                      
Shares were sold at a price                     $ 38.4
Warrants outstanding                     527,833
Issuance of common stock                     1,690,917
Common Stock [Member] | Underwriting Agreement                      
Schedule Of Equity Method Investments [Line Items]                      
Sale of Stock, Price Per Share $ 15.04                    
Shares were sold at a price $ 16                    
Warrants outstanding 625,000                    
Issuance of common stock 4,375,062                    
Pre Funded Warrant | Jefferies LLC                      
Schedule Of Equity Method Investments [Line Items]                      
Underwriting agreement to purchase             30        
Discount on underwriters warrant                     6.00%
Purchase price per share                     $ 36.0944
Shares were sold at a price                     38.3984
Pre Funded Warrant | Jefferies LLC | Initial Public Offering                      
Schedule Of Equity Method Investments [Line Items]                      
Shares were sold at a price                     0.0016
Pre Funded Warrant | Underwriting Agreement                      
Schedule Of Equity Method Investments [Line Items]                      
Shares were sold at a price $ 15.9984                    
Warrants outstanding 15.03856                    
Pre Funded Warrant | Underwriting Agreement | Initial Public Offering                      
Schedule Of Equity Method Investments [Line Items]                      
Shares were sold at a price $ 0.0016                    
Pre Funded Warrant | Underwriting Agreement | Jefferies LLC                      
Schedule Of Equity Method Investments [Line Items]                      
Purchase price per share                     $ 36.096
Maximum | 2021 Sales Agreement                      
Schedule Of Equity Method Investments [Line Items]                      
Aggregate gross proceeds       $ 75,000