v3.26.1
Stock-Based Compensation - Summary of Stock Options Activity (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 6 Months Ended 12 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Number of Shares    
Outstanding, beginning balance (in shares) 39,943  
Granted (in shares) 14,450  
Exercised (in shares) 0  
Cancelled (in shares) (581)  
Outstanding, ending balance (in shares) 53,812 39,943
Number of shares, Exercisable (in shares) 29,718  
Number of shares, Vested or expected to vest (in shares) 53,812  
Weighted Average Exercise Price    
Outstanding beginning balance (in dollars per share) $ 0.09  
Granted (in dollars per share) 0.04  
Exercised (in dollars per share) 0  
Cancelled (in dollars per share) 0.16  
Outstanding ending balance (in dollars per share) 0.08 $ 0.09
Weighted average exercise price, Exercisable (in dollars per share) 0.11  
Weighted average exercise price, Vested or expected to vest (in dollars per share) $ 0.08  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]    
Outstanding balance, weighted average remaining contract term (in years) 8 years 1 month 6 days 8 years 1 month 6 days
Options exercisable, weighted average remaining contract term (in years) 7 years 4 months 24 days  
Options Vested or expected to vest, weighted average remaining contract term (in years) 8 years 1 month 6 days  
Outstanding, aggregate intrinsic value $ 0 $ 555
Options exercisable, aggregate intrinsic value 0  
Options Vested or expected to vest, aggregate intrinsic value $ 0