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Share based compensation - Compensation expense recognized (Details) ¥ in Thousands, $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 CNY (¥) | Dec. 31, 2021 USD ($) | Dec. 31, 2021 CNY (¥) | Dec. 31, 2020 CNY (¥) | Dec. 31, 2022 USD ($) | Dec. 31, 2022 CNY (¥)
Share based compensation |  |  |  |  |  |
Total compensation expense recognized | ¥ 524,553 |  | ¥ 163,481 | ¥ 11,410 |  |
Research and development expenses |  |  |  |  |  |
Share based compensation |  |  |  |  |  |
Total compensation expense recognized | 42,986 |  | 80,872 | 6,501 |  |
Selling and marketing expenses |  |  |  |  |  |
Share based compensation |  |  |  |  |  |
Total compensation expense recognized | 8,297 |  | 7,321 | 723 |  |
Cost of revenues |  |  |  |  |  |
Share based compensation |  |  |  |  |  |
Total compensation expense recognized |  |  | 6,524 |  |  |
General and administrative expenses |  |  |  |  |  |
Share based compensation |  |  |  |  |  |
Total compensation expense recognized | 473,270 |  | 68,764 | ¥ 4,186 |  |
2021 Option Plan |  |  |  |  |  |
Share based compensation |  |  |  |  |  |
Total compensation expense recognized | ¥ 201,098 |  |  |  |  |
Total unrecognized compensation expense |  |  |  |  | $ 8,284 | ¥ 54,976
Weighted-average period | 2 years 9 months |  |  |  |  |
2021 Option Plan | Research and development expenses |  |  |  |  |  |
Share based compensation |  |  |  |  |  |
Total compensation expense recognized | ¥ 93,824 |  |  |  |  |
2021 Option Plan | Selling and marketing expenses |  |  |  |  |  |
Share based compensation |  |  |  |  |  |
Total compensation expense recognized | 8,554 |  |  |  |  |
2021 Option Plan | General and administrative expenses |  |  |  |  |  |
Share based compensation |  |  |  |  |  |
Total compensation expense recognized | ¥ 98,720 |  |  |  |  |
RSU |  |  |  |  |  |
Share based compensation |  |  |  |  |  |
Weighted-average period | 1 year 10 months 24 days |  |  |  |  |
RSU | 2021 Option Plan |  |  |  |  |  |
Share based compensation |  |  |  |  |  |
Total compensation expense recognized |  | $ 16,311 | ¥ 105,211 |  |  |

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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Amount of cost to be recognized for option under share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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