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Stock-Based Compensation - Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |
Total stock-based compensation expense | $ 52,906 | $ 76,216 | $ 20,168
Cost of revenue |  |  |
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |
Total stock-based compensation expense | 2,582 | 1,484 | 659
Sales and marketing |  |  |
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |
Total stock-based compensation expense | 18,732 | 39,086 | 15,420
Sales and marketing | Warrants, Performance Conditions | Share-Based Payment Arrangement, Nonemployee |  |  |
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |
Total stock-based compensation expense | 8,800 | 29,300 | 12,300
Research and development |  |  |
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |
Total stock-based compensation expense | 10,271 | 9,325 | 2,074
General and administrative |  |  |
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |
Total stock-based compensation expense | $ 21,321 | $ 26,321 | $ 2,015

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