Stockholders’ Deficit - Schedule of Common Stock Reserved For Future Issuance (Details) shares in Thousands	Jun. 30, 2026 shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Common stock, capital shares reserved for future issuance (in shares)	269,947
Earn Out Securities
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Common stock, capital shares reserved for future issuance (in shares)	74,998
Common stock warrants
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Common stock, capital shares reserved for future issuance (in shares)	79,631
Outstanding stock options
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Common stock, capital shares reserved for future issuance (in shares)	52,135
Shares available for issuance under equity incentive plan
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Common stock, capital shares reserved for future issuance (in shares)	25,123
Cumulative redeemable convertible preferred stock
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Common stock, capital shares reserved for future issuance (in shares)	30,604
Shares available for issuance under the ESPP
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Common stock, capital shares reserved for future issuance (in shares)	7,456