CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities:
Net loss	$ (51,158)	$ (26,523)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation expense	1,117	326
Loss on disposal of property and equipment	74	20
Stock based compensation expense	2,526	325
Changes in operating assets and liabilities:
Prepaid expenses and other current assets	(6,733)	(311)
Other non-current assets	(331)	(541)
Accounts payable	(715)	631
Accrued expenses and other current liabilities	3,962	578
Deferred rent	396	(75)
Net cash used in operating activities	(50,862)	(25,570)
Cash flows from investing activities:
Purchases of property and equipment	(4,580)	(2,318)
Net cash used in investing activities	(4,580)	(2,318)
Cash flows from financing activities:
Proceeds from issuance of redeemable convertible preferred stock, net of issuance costs	115,831	49,842
Proceeds from issuance of common stock upon initial public offering, net of issuance costs	190,691
Proceeds from exercise of stock options	410	213
Proceeds from the early exercise of stock options	529	34
Net cash provided by financing activities	307,461	50,089
Net increase in cash and cash equivalents	252,019	22,201
Cash and cash equivalents at beginning of year	39,045	16,844
Cash and cash equivalents at end of year	291,064	39,045
Supplemental cash flow disclosures:
Purchases of property and equipment included in accounts payable and accrued expenses	155	320
Conversion of preferred stock to common stock upon initial public offering	197,489
Vesting of restricted stock subject to repurchase		1
Vesting of options early exercised subject to repurchase	$ 250	$ 11