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Redeemable Convertible Preferred Stock - Summary of Redeemable Convertible Preferred Stock (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
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Series A-1 Redeemable Convertible Preferred Stock |  |
Class of Stock [Line Items] |  |
Authorized Shares | 0 | 5,075,000
Shares Issued | 0 | 5,075,000
Shares outstanding | 0 | 5,075,000
Liquidation & Carrying Value |  | $ 3,570
Series B Redeemable Convertible Preferred Stock |  |
Class of Stock [Line Items] |  |
Authorized Shares | 0 | 11,973,000
Shares Issued | 0 | 11,973,000
Shares outstanding | 0 | 11,973,000
Liquidation & Carrying Value |  | $ 10,000
Series C Redeemable Convertible Preferred Stock |  |
Class of Stock [Line Items] |  |
Authorized Shares | 0 | 73,598,283
Shares Issued | 0 | 73,598,283
Shares outstanding | 0 | 73,598,283
Liquidation & Carrying Value |  | $ 22,000
Series D Redeemable Convertible Preferred Stock |  |
Class of Stock [Line Items] |  |
Authorized Shares | 0 | 53,271,754
Shares Issued | 0 | 53,271,754
Shares outstanding | 0 | 53,271,754
Liquidation & Carrying Value |  | $ 47,300
Series E Redeemable Convertible Preferred Stock |  |
Class of Stock [Line Items] |  |
Authorized Shares | 0 | 112,422,700
Shares Issued | 0 | 112,422,700
Shares outstanding | 0 | 112,422,700
Liquidation & Carrying Value |  | $ 120,000
Series F Redeemable Convertible Preferred Stock |  |
Class of Stock [Line Items] |  |
Authorized Shares | 0 | 81,587,937
Shares Issued | 0 | 81,587,937
Shares outstanding | 0 | 81,587,937
Liquidation & Carrying Value |  | $ 105,020

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