CONDENSED CONSOLIDATED STATEMENTS OF REDEEMABLE CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS’ (DEFICIT) EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid‑in Capital	Accumulated Other Comprehensive Loss	Accumulated Deficit
Beginning Balances (in shares) at Dec. 31, 2020	85,299,885
Beginning Balances at Dec. 31, 2020	$ 81,658
Increase (Decrease) in Temporary Equity [Roll Forward]
Issuance of redeemable convertible preferred stock, net of issuance costs (in shares)	53,522,099
Issuance of Series B redeemable convertible preferred stock, net of issuance costs of $420	$ 115,831
Ending Balances (in shares) at Mar. 31, 2021	138,821,984
Ending Balances at Mar. 31, 2021	$ 197,489
Beginning Balances (in shares) at Dec. 31, 2020		1,244,139
Beginning Balances at Dec. 31, 2020	(41,490)	$ 0	$ 1,021	$ 0	$ (42,511)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)		16,453
Issuance of common stock upon exercise of stock options	29		29
Vesting of restricted common stock (in shares)		4,326
Vesting of early exercised options (in shares)		6,529
Vesting of early exercised options	8		8
Stock‑based compensation	164		164
Net loss	(8,380)				(8,380)
Ending Balances (in shares) at Mar. 31, 2021		1,271,447
Ending Balances at Mar. 31, 2021	$ (49,669)	$ 0	1,222	0	(50,891)
Beginning Balances (in shares) at Dec. 31, 2020	85,299,885
Beginning Balances at Dec. 31, 2020	$ 81,658
Ending Balances (in shares) at Sep. 30, 2021	138,821,984
Ending Balances at Sep. 30, 2021	$ 197,489
Beginning Balances (in shares) at Dec. 31, 2020		1,244,139
Beginning Balances at Dec. 31, 2020	(41,490)	$ 0	1,021	0	(42,511)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive loss	0
Net loss	(32,711)
Ending Balances (in shares) at Sep. 30, 2021		1,547,774
Ending Balances at Sep. 30, 2021	$ (72,591)	$ 0	2,631	0	(75,222)
Beginning Balances (in shares) at Mar. 31, 2021	138,821,984
Beginning Balances at Mar. 31, 2021	$ 197,489
Ending Balances (in shares) at Jun. 30, 2021	138,821,984
Ending Balances at Jun. 30, 2021	$ 197,489
Beginning Balances (in shares) at Mar. 31, 2021		1,271,447
Beginning Balances at Mar. 31, 2021	(49,669)	$ 0	1,222	0	(50,891)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)		119,359
Issuance of common stock upon exercise of stock options	212		212
Vesting of restricted common stock (in shares)		4,327
Vesting of early exercised options (in shares)		10,592
Vesting of early exercised options	18		18
Stock‑based compensation	326		326
Net loss	(9,901)				(9,901)
Ending Balances (in shares) at Jun. 30, 2021		1,405,725
Ending Balances at Jun. 30, 2021	$ (59,014)	$ 0	1,778	0	(60,792)
Ending Balances (in shares) at Sep. 30, 2021	138,821,984
Ending Balances at Sep. 30, 2021	$ 197,489
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)		57,661
Issuance of common stock upon exercise of stock options	106		106
Vesting of restricted common stock (in shares)		2,884
Vesting of early exercised options (in shares)		81,504
Vesting of early exercised options	170		170
Stock‑based compensation	577		577
Other comprehensive loss	0
Net loss	(14,430)				(14,430)
Ending Balances (in shares) at Sep. 30, 2021		1,547,774
Ending Balances at Sep. 30, 2021	$ (72,591)	$ 0	2,631	0	(75,222)
Beginning Balances (in shares) at Dec. 31, 2021	0
Beginning Balances at Dec. 31, 2021	$ 0
Ending Balances (in shares) at Mar. 31, 2022	0
Ending Balances at Mar. 31, 2022	$ 0
Beginning Balances (in shares) at Dec. 31, 2021	31,224,336	31,224,336
Beginning Balances at Dec. 31, 2021	$ 298,718	$ 3	392,384	0	(93,669)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)		24,891
Issuance of common stock upon exercise of stock options	50		50
Vesting of early exercised options (in shares)		15,224
Vesting of early exercised options	35		35
Stock‑based compensation	1,794		1,794
Other comprehensive loss	(1,535)			(1,535)
Net loss	(21,671)				(21,671)
Ending Balances (in shares) at Mar. 31, 2022		31,264,451
Ending Balances at Mar. 31, 2022	$ 277,391	$ 3	394,263	(1,535)	(115,340)
Beginning Balances (in shares) at Dec. 31, 2021	0
Beginning Balances at Dec. 31, 2021	$ 0
Ending Balances (in shares) at Sep. 30, 2022	0
Ending Balances at Sep. 30, 2022	$ 0
Beginning Balances (in shares) at Dec. 31, 2021	31,224,336	31,224,336
Beginning Balances at Dec. 31, 2021	$ 298,718	$ 3	392,384	0	(93,669)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)	57,018
Other comprehensive loss	$ (2,747)
Net loss	$ (69,987)
Ending Balances (in shares) at Sep. 30, 2022	31,325,373	31,325,373
Ending Balances at Sep. 30, 2022	$ 233,220	$ 3	399,620	(2,747)	(163,656)
Beginning Balances (in shares) at Mar. 31, 2022	0
Beginning Balances at Mar. 31, 2022	$ 0
Ending Balances (in shares) at Jun. 30, 2022	0
Ending Balances at Jun. 30, 2022	$ 0
Beginning Balances (in shares) at Mar. 31, 2022		31,264,451
Beginning Balances at Mar. 31, 2022	277,391	$ 3	394,263	(1,535)	(115,340)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)		5,259
Issuance of common stock upon exercise of stock options	11		11
Vesting of early exercised options (in shares)		14,738
Vesting of early exercised options	34		34
Stock‑based compensation	2,512		2,512
Other comprehensive loss	(730)			(730)
Net loss	(23,179)				(23,179)
Ending Balances (in shares) at Jun. 30, 2022		31,284,448
Ending Balances at Jun. 30, 2022	$ 256,039	$ 3	396,820	(2,265)	(138,519)
Ending Balances (in shares) at Sep. 30, 2022	0
Ending Balances at Sep. 30, 2022	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)		26,868
Issuance of common stock upon exercise of stock options	60		60
Vesting of early exercised options (in shares)		14,057
Vesting of early exercised options	33		33
Stock‑based compensation	2,707		2,707
Other comprehensive loss	(482)			(482)
Net loss	$ (25,137)				(25,137)
Ending Balances (in shares) at Sep. 30, 2022	31,325,373	31,325,373
Ending Balances at Sep. 30, 2022	$ 233,220	$ 3	$ 399,620	$ (2,747)	$ (163,656)