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Stockholders' Equity (Tables)
 12 Months Ended
Dec. 31, 2022
Equity [Abstract]  
Summary of Option Activity A summary of option activity under the Equity Incentive Plans as of December 31, 2022, and changes during the year ended December 31, 2022, is as follows:
Number of
Shares		Weighted-
Average
Exercise Price
Per Share		Weighted-
Average
Remaining
Contractual
Term (in Years)		Average
Intrinsic
Value
(in Thousands)
Outstanding at January 1, 202210,372,865$0.85 5.9$16,208 
Granted3,875,412$2.63 
Exercised(146,794)$0.31 
Expired/Forfeited(27,609)$2.03 
Outstanding at December 31, 202214,073,874$1.35 6.1$92,629 
Vested and exercisable at December 31, 20227,927,465$0.64 3.9$57,752 
Vested and expected to vest at December 31, 202214,073,874$1.35 6.1$92,629 
Schedule of Weighted-Average Assumptions to Determine Fair Value
The weighted-average grant date fair value of options granted under the Equity Incentive Plans during the years ended December 31, 2022 and 2021 was $1.68 and $1.14 per share, respectively. The fair value of options granted was estimated at the date of grant using the Black-Scholes option-pricing model with the following weighted-average assumptions:
Year ended December 31,
20222021
Dividend yield— %— %
Expected volatility59.2 %51.8 %
Expected term (in years)6.25.9
Risk-free rate2.7 %1.1 %
Summary of RSU Activity
A summary of RSU activity under the Equity Incentive Plans as of December 31, 2022, and changes during the year ended December 31, 2022, is as follow:
Number of
Shares		Weighted-Average
Grant Date Fair Value
Outstanding at January 1, 2022—— 
Granted185,000$10.40 
Vested—— 
Expired/Forfeited—— 
Outstanding at December 31, 2022185,000$10.40 
Summary of Outstanding Stock Warrants
Outstanding stock warrants consisted of the following as of December 31, 2022:

Number of
Warrants		Exercise Price
Per Share		Expiration Date
Public warrants29,268,336 $11.50September 14, 2027
Private warrants16,400,000 $11.50September 14, 2027
PIPE warrants2,052,500 $12.50September 14, 2027
47,720,836 
Summary of Stock-Based Compensation Expense Stock-based compensation from stock options and RSUs under the Equity Incentive Plans and stock-based compensation from stock options under the Amprius Holdings Plan that were recorded by the Company were included in the following lines in the accompanying consolidated statements of operations during the periods presented (in thousands):
Years ended December 31,
20222021
Cost of revenue$516 $693 
Research and development27 233 
Selling, general and administrative2,166 1,547 
Total stock-based compensation$2,709 $2,473