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v3.25.3

Redeemable Convertible Preferred Stock, Redeemable Common Stock, and Stockholders’ Equity (Deficit) - Common Stock (Details) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2025 voting_right $ / shares shares | Dec. 31, 2024 voting_right $ / shares shares
Class of Stock [Line Items] |  |
Common shares, shares authorized (in shares) | 3,400,000,000 | 690,680,000
Common shares, par value (usd per share) | $ / shares | $ 0.000005 | $ 0.000005
Common stock dividends declared (usd per share) | $ / shares | $ 0 | $ 0
Common Class C |  |
Class of Stock [Line Items] |  |
Common shares, shares authorized (in shares) | 200,000,000 | 0
Common shares, par value (usd per share) | $ / shares | $ 0.000005 | $ 0.000005
Common shares, shares outstanding (in shares) | 0 | 0
Common shares, shares issued (in shares) | 0 | 0
Voting rights for common stock | voting_right | 0 |
Common Class A |  |
Class of Stock [Line Items] |  |
Common shares, shares authorized (in shares) | 3,000,000,000 | 540,680,000
Common shares, par value (usd per share) | $ / shares | $ 0.000005 | $ 0.000005
Common shares, shares outstanding (in shares) | 384,857,000 | 114,689,000
Common shares, shares issued (in shares) | 391,445,000 | 121,277,000
Voting rights for common stock | voting_right | 1 |
Common Class B |  |
Class of Stock [Line Items] |  |
Common shares, shares authorized (in shares) | 200,000,000 | 150,000,000
Common shares, par value (usd per share) | $ / shares | $ 0.000005 | $ 0.000005
Common shares, shares outstanding (in shares) | 112,733,000 | 118,198,000
Common shares, shares issued (in shares) | 112,733,000 | 118,198,000
Voting rights for common stock | voting_right | 10 | 1

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