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v3.25.1

Summary of significant accounting policies - Additional information (Details) ¥ in Thousands, $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2024 CNY (¥) contractType ¥ / $ | Dec. 31, 2024 USD ($) | Dec. 31, 2023 CNY (¥) | Dec. 31, 2022 CNY (¥) | Mar. 26, 2025 CNY (¥) | Dec. 31, 2024 USD ($) contractType ¥ / $
Summary of significant accounting policies |  |  |  |  |  |
Accumulated deficit | ¥ 7,603,001 |  | ¥ 6,670,686 |  |  | $ 1,041,607
Current liabilities in excess of current assets | 2,293,895 |  |  |  |  |
Net cash used in operating activities | ¥ 430,279 | $ 58,947 | 1,232,952 | ¥ 461,337 |  |
Financing Receivable, Term | 6 months |  |  |  |  | 6 months
Number of contract types | contractType | 2 |  |  |  |  | 2
Advertising costs | ¥ 30,657 |  | 17,651 | 11,800 |  |
Government Assistance, Award Amount | 75,211 |  | 60,636 | 59,393 |  |
Employee social benefits expense | ¥ 226,423 |  | 213,772 | 197,669 |  |
Conversion rate for translation of amounts (in RMB/USD) | ¥ / $ | 7.2993 |  |  |  |  | 7.2993
Statutory surplus | ¥ 3,240 |  | 3,240 |  |  |
Accrued expenses and other current liabilities | 5,833 |  | 0 |  |  |
Other non-current liabilities – third parties | 98,002 |  | 48,792 |  |  |
Nonoperating Income (Expense) |  |  |  |  |  |
Summary of significant accounting policies |  |  |  |  |  |
Government grants | ¥ 20,168 |  | ¥ 11,844 | ¥ 59,393 |  |
Products |  |  |  |  |  |
Summary of significant accounting policies |  |  |  |  |  |
VAT rate | 6.00% | 6.00% |  |  |  |
Services |  |  |  |  |  |
Summary of significant accounting policies |  |  |  |  |  |
VAT rate | 13.00% | 13.00% |  |  |  |
Related Party | Subsequent events |  |  |  |  |  |
Summary of significant accounting policies |  |  |  |  |  |
Face amount of debt |  |  |  |  | ¥ 200,000 |

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