Stock-Based Compensation (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2023

Dec. 31, 2022

Stock-Based Compensation [Abstract]

Schedule of option activity

	Number of Options			Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (Years)		Aggregate Intrinsic Value
Outstanding as of December 31, 2022		35,687,240		$	3.37		7.3	$	22
Granted		4,000,000			1.08
Exercised		(49,456	)		0.89			$	10
Cancelled/forfeited		(2,455,912	)		3.37
Outstanding as of March 31, 2023		37,181,872		$	3.15		7.5	$	31

	Number of Options			Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (Years)		Aggregate Intrinsic Value
Outstanding as of December 31, 2021		-		$	-
Granted		8,633,607		$	3.04
Exercised		-
Cancelled/forfeited		(1,987,155	)		3.96
Outstanding as of December 31, 2022		6,646,452		$	2.76		8.97	$	-
Exercisable as of December 31, 2022		2,675,027			1.85		8.38		-

	Number of Options			Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (Years)		Aggregate Intrinsic Value
Outstanding as of December 31, 2020		30,402,801		$	2.45		8.75	$	885
Granted		5,287,031			4.74
Exercised		(2,757,671	)		2.30				7,740
Expired/forfeited		(969,240	)		3.65
Outstanding as of December 31, 2021		31,962,921		$	2.81		7.77	$	86,075
Granted		-			-
Exercised		(1,606,795	)		2.52				3,658
Expired/forfeited		(6,933,850	)		2.58				8,784
Outstanding as of December 31, 2022		23,422,276		$	2.83		6.92	$	22
Exercisable as of December 31, 2022		16,013,998		$	2.63		6.62	$	21

	Number of Options			Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (Years)		Aggregate Intrinsic Value
Outstanding as of December 31, 2020		6,490,208		$	2.49		9.26	$	1,174
Granted		5,516,399			7.82
Exercised		(1,630,925	)		2.54				8,807
Expired/forfeited		(848,955	)		2.68
Outstanding as of December 31, 2021		9,526,727		$	5.55		8.01	$	13,905
Granted		-		$	-
Exercised		(2,181,335	)		2.50				1,468
Expired/forfeited		(1,726,880	)		7.78
Outstanding as of December 31, 2022		5,618,512		$	6.34		6.94	$	-
Exercisable as of December 31, 2022		1,181,230		$	3.96		6.20	$	-

Schedule of weighted average assumption

	Three Months Ended March 31,
	2023			2022
Risk-free interest rate:		3.5	%		1.6	%
Expected term (in years):		8.6			7.0
Expected volatility:		90.2	%		43.5	%
Dividend yield:		0	%		0	%

	2022
Risk-free interest rate:		2.73	%
Expected term (in years):		6.99
Expected volatility:		67.00	%
Dividend yield:		0	%
Grant date fair value per share	$	3.19

	2021
Risk-free interest rate:		0.79	%
Expected term (in years):		6.05
Expected volatility:		42.10	%
Dividend yield:		0.00	%

	2021
Risk-free interest rate:		1.39	%
Expected term (in years):		9.06
Expected volatility:		35.86	%
Dividend yield:		0.00	%

Schedule of RSU activity

	Shares			Weighted Average Fair Value
Outstanding as of December 31, 2022		17,869,663		$	1.09
Granted		5,932,766			1.08
Released		(1,145,334	)		1.24
Forfeitures		(2,525,984	)		1.11
Outstanding as of March 31, 2023		20,131,111		$	1.08

	Shares			Weighted Average Fair Value
Outstanding as of December 31, 2021		-		$	-
Granted		29,247,487		$	0.87
Released		(10,015,141	)	$	0.40
Forfeited		(1,362,683	)	$	1.30
Outstanding as of December 31, 2022 (1)		17,869,663		$	1.09

(1) The Company’s subsidiaries in China have employees who are citizens of People’s Republic of China (PRC). Pursuant to the regulation Circular 78 and Circular 7 issued by the Central State Administration of Foreign Exchange of PRC (“SAFE”), we cannot release vested RSUs to it’s PRC citizen employees before they have completed the required SAFE registration with a dedicated account set up for each of them to repatriate proceeds back to China under the SAFE. As a result, 1,448,697 RSUs of the Company’s PRC citizens employees vested in 2022 were included in the outstanding RSUs at December 31, 2022 as unreleased RSUs because those employees did not complete the SAFE registration process.

Schedule of stock based compensation expenses

	Three Months Ended March 31,
	2023		2022
Research and development	$	11,294	$	1,622
Sales and marketing		1,280		374
General and administrative		2,528		1,350
	$	15,102	$	3,346

	2022		2021
Research and development	$	13,118	$	4,001
Sales and marketing		1,744		1,185
General and administrative		2,791		6,159
	$	17,653	$	11,345

Restricted stock awards for employee bonus, net	2021
Research and development	$	7,613
Sales and marketing		2,310
General and administrative		8,694
	$	18,617