Share-based Compensation - Schedule of Stock Option Activity (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Number of Shares
Options outstanding, beginning balance (in shares)	30,752,163	16,161,311
Options granted (in shares)	17,582,483	14,892,844
Options exercised (in shares)	(5,741,547)	(113,247)
Options forfeited (in shares)	(1,736,001)	(188,745)
Options expired (in shares)	(28,940)
Options outstanding, ending balance (in shares)	40,828,158	30,752,163	16,161,311
Options exercisable (in shares)	15,551,698
Options vested (in shares)	14,243,064
Weighted Average Grant Date Fair Value ($)
Options outstanding, beginning balance (in dollars per share)	$ 0.13	$ 0.10
Options granted (in dollars per share)	2.34	0.16
Options exercised (in dollars per share)	0.07	0.09
Options forfeited (in dollars per share)	0.24	0.09
Options expired (in dollars per share)	0.37
Options outstanding, ending balance (in dollars per share)	1.10	0.13	$ 0.10
Options exercisable, weighted average grant date fair value (in dollars per share)	0.13
Options vested, weighted average grant date fair value (in dollars per share)	0.06
Weighted Average Exercise Price ($)
Options outstanding, beginning balance (in dollars per share)	0.13	0.09
Options granted (in dollars per share)	5.42	0.18
Options exercised (in dollars per share)	0.11	0.09
Options forfeited (in dollars per share)	0.21	0.09
Options expired (in dollars per share)	0.22
Options outstanding, ending balance (in dollars per share)	2.41	$ 0.13	$ 0.09
Options exercisable, weighted average exercise price (in dollars per share)	0.13
Options vested, weighted average exercise price (in dollars per share)	$ 0.11
Weighted Average Remaining Contractual Life (Years)
Options outstanding, weighted average remaining contractual term	8 years 4 months 28 days	8 years 7 months 24 days	8 years 6 months 10 days
Options exercisable, weighted average remaining contractual term	7 years 14 days
Options vested, weighted average remaining contractual term	6 years 10 months 6 days
Aggregate Intrinsic Value ($)
Options exercised, aggregate intrinsic value	$ 15,598,547	$ 11,813
Options outstanding, aggregate intrinsic value	535,438,090	$ 2,061,436
Options exercisable, aggregate intrinsic value	239,383,717
Options vested, aggregate intrinsic value	$ 219,457,217