Loss Per Share - Schedule of Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2026	Jun. 30, 2026	Mar. 31, 2026	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Sep. 30, 2026	Sep. 30, 2025
Numerator:
Net loss	$ (46,136)	$ (50,825)	$ (51,016)	$ (35,963)	$ (40,727)	$ (48,438)	$ (147,977)	$ (125,128)
Denominator:
Weighted-average number of ordinary shares - basic (in shares)	1,123,397,940			1,102,072,680			1,116,916,210	1,091,690,340
Weighted-average number of ordinary shares - diluted (in shares)	1,123,397,940			1,102,072,680			1,116,916,210	1,091,690,340
Net loss per share - basic (in dollars per share)	$ (0.04)			$ (0.03)			$ (0.13)	$ (0.11)
Net loss per share - diluted (in dollars per share)	$ (0.04)			$ (0.03)			$ (0.13)	$ (0.11)