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Stock-based Compensation - Summary of Common Stock Reserved for Future Issuance (Details) - shares | Dec. 31, 2021 | Dec. 31, 2020
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Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Common stock reserved for future issuance | 29,685,655 | 77,822,703
Convertible Preferred Stock |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Common stock reserved for future issuance | 0 | 57,987,216
Conversion of Preferred Stock in Future Issuance (B-2) |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Common stock reserved for future issuance | 0 | 10,979,319
Stock Options Issued and Outstanding |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Common stock reserved for future issuance | 13,818,212 | 6,541,422
Awards Available for Future Grant |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Common stock reserved for future issuance | 14,699,430 | 2,314,746
Shares Available for Purchase Under ESPP |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Common stock reserved for future issuance | 1,168,013 | 0

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- Definition Aggregate number of common shares reserved for future issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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