ORDINARY SHARES AND ORDINARY SHARE WARRANTS - Narrative (Details) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended	9 Months Ended
	May 31, 2023 USD ($) $ / shares shares	Sep. 30, 2025 vote $ / shares shares	Sep. 30, 2025 vote $ / shares shares	Jun. 30, 2025 shares	Dec. 31, 2024 shares	Sep. 30, 2024 shares	Jun. 30, 2024 shares	Dec. 31, 2023 shares
Class of Stock [Line Items]
Ordinary shares, authorized (in shares)		839,999,998	839,999,998
Shares authorized (in shares)		6,666,666	6,666,666		6,666,666
Temporary equity, new issues (in shares)	5,000,000
Proceeds from issuance of redeemable convertible preferred shares, net | $	$ 75
Issuance of ordinary shares upon conversion of preferred shares (in shares)		2,972,853	2,972,853
Shares outstanding (in shares)		2,027,147	2,027,147	5,000,000	5,000,000	5,000,000	5,000,000	5,000,000
Ordinary Shares (Class A and Class B)
Class of Stock [Line Items]
Ordinary shares, outstanding (in shares)		80,127,904	80,127,904	76,161,969	73,879,982	72,812,941	71,595,691	62,043,246
Issuance of ordinary shares upon conversion of preferred shares (in shares)		2,972,853	2,972,853
Warrants Expiring March 2031 | Ordinary share warrants
Class of Stock [Line Items]
Warrants outstanding (in shares)		433,942	433,942
Warrant purchase price (in dollars per share) | $ / shares		$ 0.00006	$ 0.00006
Warrants Expiring June 2030 | Ordinary share warrants
Class of Stock [Line Items]
Warrants outstanding (in shares)		192,900	192,900
Warrant purchase price (in dollars per share) | $ / shares		$ 0.0006	$ 0.0006
Warrants Expiring March 2032 | Ordinary share warrants
Class of Stock [Line Items]
Warrants outstanding (in shares)		220,000	220,000
Warrant purchase price (in dollars per share) | $ / shares		$ 0.12	$ 0.12
Warrants Expiring September 2034 | Ordinary share warrants
Class of Stock [Line Items]
Warrants outstanding (in shares)		1,309,632	1,309,632
Warrant purchase price (in dollars per share) | $ / shares		$ 0.01	$ 0.01
Warrants Expiring June 2027 | Ordinary share warrants
Class of Stock [Line Items]
Warrants outstanding (in shares)		1,229,166	1,229,166
Warrant purchase price (in dollars per share) | $ / shares		$ 138	$ 138
Number of shares called by each warrant (in shares)		1	1
Oak HC/FT Partners V, L.P., Oak HC/FT Partners V-A, L.P. And Oak HC/FT Partners V-B, L.P
Class of Stock [Line Items]
Temporary equity, new issues (in shares)			2,027,147
Class A Ordinary Shares, no par value
Class of Stock [Line Items]
Ordinary shares, authorized (in shares)		666,666,666	666,666,666		666,666,666
Ordinary shares, outstanding (in shares)		68,839,327	68,839,327		61,227,672
Ordinary shares, voting rights, votes per share | vote		1	1
Common Class B
Class of Stock [Line Items]
Ordinary shares, authorized (in shares)		166,666,666	166,666,666		166,666,666
Ordinary shares, outstanding (in shares)		11,288,577	11,288,577		12,652,310
Ordinary shares, voting rights, votes per share | vote		10	10
Redeemable convertible preferred shares
Class of Stock [Line Items]
Sale of stock, price per share (in dollars per share) | $ / shares	$ 15.00