Condensed Statements of Convertible Preferred Stock and Stockholders’ Equity (Deficit) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Accumulated Deficit
Beginning balance (in shares) at Dec. 31, 2021	22,498,827
Beginning balance at Dec. 31, 2021	$ 255,909
Increase (Decrease) in Temporary Equity [Roll Forward]
Issuance of Series D convertible preferred stock, net of issuance costs (in shares)	12,443,676
Issuance of Series D convertible preferred stock, net of issuance costs	$ 159,349
Ending balance (in shares) at Sep. 30, 2022	34,942,503
Ending balance at Sep. 30, 2022	$ 415,258
Beginning balance (shares) at Dec. 31, 2021		3,138,956
Beginning balance at Dec. 31, 2021	(54,574)	$ 0	$ 771	$ (239)	$ (55,106)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Deemed dividend upon down round of common stock	0		4,550		(4,550)
Issuance of common stock (in shares)		851,943
Issuance of common stock	6,548	$ 1	6,547
Repurchase of common shares (in shares)		(194,514)
Repurchase of common shares	(1,860)				(1,860)
Exercise of vested stock options (in shares)		44,115
Exercise of vested stock options	85		85
Vesting of early exercised stock options and founder shares (in shares)		555,174
Vesting of early exercised stock options and founder shares	620		620
Stock-based compensation	4,219		4,219
Other noncash compensation	269		269
Unrealized gain (loss) on investment securities	(696)			(696)
Net loss	(53,898)				(53,898)
Ending balance (shares) at Sep. 30, 2022		4,395,674
Ending balance at Sep. 30, 2022	$ (99,287)	$ 1	17,061	(935)	(115,414)
Beginning balance (in shares) at Dec. 31, 2021	22,498,827
Beginning balance at Dec. 31, 2021	$ 255,909
Ending balance (in shares) at Dec. 31, 2022	34,942,503
Ending balance at Dec. 31, 2022	$ 415,258
Beginning balance (shares) at Dec. 31, 2021		3,138,956
Beginning balance at Dec. 31, 2021	(54,574)	$ 0	771	(239)	(55,106)
Ending balance (shares) at Dec. 31, 2022		4,532,751
Ending balance at Dec. 31, 2022	$ (111,294)	$ 1	19,374	(553)	(130,116)
Beginning balance (in shares) at Jun. 30, 2022	22,498,827
Beginning balance at Jun. 30, 2022	$ 255,909
Increase (Decrease) in Temporary Equity [Roll Forward]
Issuance of Series D convertible preferred stock, net of issuance costs (in shares)	12,443,676
Issuance of Series D convertible preferred stock, net of issuance costs	$ 159,349
Ending balance (in shares) at Sep. 30, 2022	34,942,503
Ending balance at Sep. 30, 2022	$ 415,258
Beginning balance (shares) at Jun. 30, 2022		3,401,685
Beginning balance at Jun. 30, 2022	(87,154)	$ 0	4,300	(1,037)	(90,417)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Deemed dividend upon down round of common stock	0		4,550		(4,550)
Issuance of common stock (in shares)		851,943
Issuance of common stock	6,548	$ 1	6,547
Exercise of vested stock options (in shares)		5,153
Exercise of vested stock options	10		10
Vesting of early exercised stock options and founder shares (in shares)		136,893
Vesting of early exercised stock options and founder shares	119		119
Stock-based compensation	1,447		1,447
Other noncash compensation	88		88
Unrealized gain (loss) on investment securities	102			102
Net loss	(20,447)				(20,447)
Ending balance (shares) at Sep. 30, 2022		4,395,674
Ending balance at Sep. 30, 2022	$ (99,287)	$ 1	17,061	(935)	(115,414)
Beginning balance (in shares) at Dec. 31, 2022	34,942,503
Beginning balance at Dec. 31, 2022	$ 415,258
Increase (Decrease) in Temporary Equity [Roll Forward]
Conversion of convertible preferred stock into common stock (in shares)	(34,942,503)
Conversion of convertible preferred stock into common stock	$ (415,258)
Ending balance (in shares) at Sep. 30, 2023	0
Ending balance at Sep. 30, 2023	$ 0
Beginning balance (shares) at Dec. 31, 2022		4,532,751
Beginning balance at Dec. 31, 2022	(111,294)	$ 1	19,374	(553)	(130,116)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Deemed dividend upon down round of common stock	0		1,209		(1,209)
Conversion of convertible preferred stock into common stock (in shares)		35,616,773
Conversion of convertible preferred stock into common stock	415,258	$ 3	415,255
Issuance of common stock (in shares)		18,706,240
Issuance of common stock	$ 310,402	$ 2	310,400
Exercise of vested stock options (in shares)	1,209,126	463,559
Exercise of vested stock options	$ 1,475		1,475
Vesting of early exercised stock options and founder shares (in shares)		506,861
Vesting of early exercised stock options and founder shares	722		722
Stock-based compensation	7,195		7,195
Other noncash compensation	199		199
Unrealized gain (loss) on investment securities	167			167
Net loss	(48,802)				(48,802)
Ending balance (shares) at Sep. 30, 2023		59,826,184
Ending balance at Sep. 30, 2023	$ 575,322	$ 6	755,829	(386)	(180,127)
Beginning balance (in shares) at Jun. 30, 2023	34,942,503
Beginning balance at Jun. 30, 2023	$ 415,258
Increase (Decrease) in Temporary Equity [Roll Forward]
Conversion of convertible preferred stock into common stock (in shares)	(34,942,503)
Conversion of convertible preferred stock into common stock	$ (415,258)
Ending balance (in shares) at Sep. 30, 2023	0
Ending balance at Sep. 30, 2023	$ 0
Beginning balance (shares) at Jun. 30, 2023		5,242,552
Beginning balance at Jun. 30, 2023	(135,489)	$ 1	25,803	(566)	(160,727)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Deemed dividend upon down round of common stock	0		1,209		(1,209)
Conversion of convertible preferred stock into common stock (in shares)		35,616,773
Conversion of convertible preferred stock into common stock	415,258	$ 3	415,255
Issuance of common stock (in shares)		18,706,240
Issuance of common stock	310,402	$ 2	310,400
Exercise of vested stock options (in shares)		60,844
Exercise of vested stock options	197		197
Vesting of early exercised stock options and founder shares (in shares)		199,775
Vesting of early exercised stock options and founder shares	335		335
Stock-based compensation	2,564		2,564
Other noncash compensation	66		66
Unrealized gain (loss) on investment securities	180			180
Net loss	(18,191)				(18,191)
Ending balance (shares) at Sep. 30, 2023		59,826,184
Ending balance at Sep. 30, 2023	$ 575,322	$ 6	$ 755,829	$ (386)	$ (180,127)