Summary of Significant Accounting Policies - Potential Dilutive Securities Excluded From Calculation Of Net Loss Per Share (Details) - USD ($) $ in Thousands |
9 Months Ended | |
|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Subsidiary, Sale of Stock [Line Items] | ||
| Total | $ 17,947,105 | $ 12,240,739 |
| Options to purchase common stock | ||
| Subsidiary, Sale of Stock [Line Items] | ||
| Total | 13,775,313 | 9,649,402 |
| Unvested restricted common stock | ||
| Subsidiary, Sale of Stock [Line Items] | ||
| Total | $ 4,171,792 | $ 2,591,337 |