v3.26.3
Stock-Based Compensation - Summary of Stock Option Award Activity (Details)
$ / shares in Units, $ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2026
USD ($)
$ / shares
shares
Dec. 31, 2025
USD ($)
$ / shares
shares
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward]    
Number of Stock Options, Outstanding, Beginning Balance | shares 8,569,619  
Number of Stock Options, Granted | shares 4,341,072  
Number of Stock Options, Exercised | shares (216,075)  
Number of Stock Options, Forfeited | shares (392,741)  
Number of Stock Options, Outstanding, Ending Balance | shares 12,301,875 8,569,619
Number of Stock Options, Vested and expected to vest | shares 12,301,875  
Number of Stock Options, Exercisable | shares 8,929,753  
Weighted Average Exercise Price, Outstanding, Beginning Balance | $ / shares $ 4.6  
Weighted Average Exercise Price, Granted | $ / shares 16.23  
Weighted Average Exercise Price, Exercised | $ / shares 3.74  
Weighted Average Exercise Price, Forfeited | $ / shares 5.87  
Weighted Average Exercise Price, Outstanding, Ending Balance | $ / shares 8.68 $ 4.6
Weighted Average Exercise Price, Vested and expected to vest | $ / shares 8.68  
Weighted Average Exercise Price, Exercisable | $ / shares $ 8.4  
Weighted-Average Remaining Contractual Term (in years), Outstanding 8 years 4 months 2 days 8 years 8 months 1 day
Weighted-Average Remaining Contractual Term (in years), Vested and expected to vest 8 years 4 months 2 days  
Weighted-Average Remaining Contractual Term (in years), Exercisable 8 years 2 months 8 days  
Aggregate Intrinsic Value, Outstanding, Beginning balance | $ $ 28,669  
Aggregate Intrinsic Value, Exercised | $ 1,421  
Aggregate Intrinsic Value, Outstanding, Ending balance | $ 199,000 $ 28,669
Aggregate Intrinsic Value, Vested and expected to vest | $ 199,000  
Aggregate Intrinsic Value, Exercisable | $ $ 147,005