v3.26.3
Share based compensation - Activities of options (Details)
$ / shares in Units, $ in Thousands
 6 Months Ended
Jun. 30, 2026
USD ($)
$ / shares
shares
Weighted remaining contractual years  
Exercisable | $ $ 592
Employee Stock Option  
Number of options  
Outstanding at the beginning (in shares) | shares 22,631,543
Granted (in shares) | shares 770,000
Forfeited (in shares) | shares (1,733,031)
Exercised (in shares) | shares (370,424)
Outstanding at the end (in shares) | shares 21,298,088
Exercisable (in shares) | shares 16,828,518
Weighted Average Exercise Price  
Outstanding at the beginning (in USD per share) $ 4.77
Granted (in dollars per share) 0.05
Forfeited (in USD per share) 0.27
Exercised (in USD per share) 0.50
Outstanding at the end (in USD per share) 5.04
Exercisable (in USD per share) 7.49
Weighted Average Fair value at grant date  
Outstanding at the beginning (in USD per share) 2.32
Granted (in USD per share) 0.98
Forfeited (in USD per share) 1.52
Exercised (in USD per share) 1.60
Outstanding at the end (in USD per share) 2.35
Exercisable (in USD per share) $ 2.38
Weighted remaining contractual years  
Vested and expected to vest 6 years 11 months 26 days
Exercisable 6 years 2 months 23 days
Vested and expected to vest | $ $ 50,068
Exercisable | $ $ 40,123