Stock-based compensation - Schedule of Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Number of Shares Underlying Outstanding Options
Number of shares underlying outstanding options, beginning balance (in shares)	24,129,096	25,732,503	1,599,645
Number of shares underlying outstanding options, options assumed through acquisition (in shares)		823,114
Number of shares underlying outstanding options, options granted (in shares)		645,796	37,663,242
Number of shares underlying outstanding options, options exercised (in shares)	(2,133,181)	(2,155,348)	(12,221,364)
Number of shares underlying outstanding options, options cancelled (in shares)	(978,753)	(916,969)	(1,309,020)
Number of shares underlying outstanding options, ending balance (in shares)	21,017,162	24,129,096	25,732,503	1,599,645
Number of shares underlying outstanding options, vested and expected to vest (in shares)	21,017,162
Number of shares underlying outstanding options, exercisable (in shares)	12,398,966
Weighted- Average Exercise Price per Share
Weighted average exercise price, beginning balance (in dollars per share)	$ 1.01	$ 0.56	$ 6.58
Weighted average exercise price, options assumed through acquisition (in dollars per share)		5.05
Weighted average exercise price, options granted (in dollars per share)		10.26	0.45
Weighted average exercise price, options exercised (in dollars per share)	0.20	0.22	0.20
Weighted average exercise price, options cancelled (in dollars per share)	2.86	0.30	1.58
Weighted average exercise price, ending balance (in dollars per share)	1.01	$ 1.01	$ 0.56	$ 6.58
Weighted average exercise price, options vested and expected to vest (in dollars per share)	1.01
Weighted average exercise price, options exercisable (in dollars per share)	$ 0.91
Weighted- Average Remaining Contractual Term (in years)
Stock options outstanding, weighted average remaining contractual term	7 years 8 months 12 days	8 years 7 months 6 days	9 years 6 months	8 years 9 months 18 days
Stock options assumed through acquisition, weighted average remaining contractual term		8 years 3 months 18 days
Stock options granted, weighted average remaining contractual term		9 years 3 months 18 days		9 years 4 months 24 days
Stock options exercised, weighted average remaining contractual term
Stock options vested and expected to vest, weighted average remaining contractual term	7 years 8 months 12 days
Stock options exercisable, weighted average remaining contractual term	7 years 8 months 12 days
Aggregate Intrinsic Value
Stock options outstanding, aggregate intrinsic value, beginning balance	$ 100,992	$ 245,746	$ 3,020
Stock options granted, aggregate intrinsic value		0	363,941
Stock options assumed through acquisition, aggregate intrinsic value		125
Stock options exercised, aggregate intrinsic value	4,639	10,742	121,106
Stock options cancelled, aggregate intrinsic value	1,015	4,492	0
Stock options outstanding, aggregate intrinsic value, ending balance	8,285	$ 100,992	$ 245,746	$ 3,020
Stock options vested and expected to vest, aggregate intrinsic value	8,285
Stock options exercisable, aggregate intrinsic value	$ 5,178