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Related Party Transactions (Details) $ / shares in Units, $ in Thousands								1 Months Ended		12 Months Ended
		Oct. 21, 2025 shares	Apr. 08, 2025 $ / shares shares	Sep. 11, 2024 shares	Aug. 01, 2024 ft²	Jun. 03, 2024 shares	Apr. 01, 2024 USD ($) ft² contract	Mar. 31, 2025 $ / shares shares	Oct. 31, 2024 shares	Dec. 31, 2025 USD ($) $ / shares shares	Dec. 31, 2024 USD ($) $ / shares	Dec. 31, 2023 USD ($)	Jul. 29, 2022 ft²	Jul. 25, 2022 ft²
Related Party Transaction [Line Items]
Research and development	[1]									$ 537,674	$ 150,777	$ 59,471
Accrued liabilities										$ 32,100	$ 19,554
Exercised (in shares) | shares										4,629,988
Shares issued (in shares) | shares						22,222,222
Warrant weighted average exercise price (in dollars per share) | $ / shares											$ 1.58
Exercised (in dollars per share) | $ / shares										$ 1.58
Private placement
Related Party Transaction [Line Items]
Shares issued (in shares) | shares		26,682,846		10,352,418
Related party
Related Party Transaction [Line Items]
Shares issued (in shares) | shares		533,617
Affiliated entity
Related Party Transaction [Line Items]
Number of sublease contracts to other party | contract							2
Shares issued (in shares) | shares		14,514,402
Co-Chief Executive Officer
Related Party Transaction [Line Items]
Exercised (in shares) | shares			1,048,834					2,936,221
Warrant weighted average exercise price (in dollars per share) | $ / shares								$ 1.58
Exercised (in dollars per share) | $ / shares			$ 1.58
Co-Chief Executive Officer | Private placement
Related Party Transaction [Line Items]
Shares issued (in shares) | shares								3,985,055
Wilson Sonsini Goodrich & Rosati P.C. (“WSGR”)
Related Party Transaction [Line Items]
Legal fees										$ 1,400
Sublease Agreement, First and Third Amendment | Affiliated entity
Related Party Transaction [Line Items]
Payments to related party										834	$ 795	762
First amendment to sublease | Affiliated entity
Related Party Transaction [Line Items]
Area of premises subleased (in square feet) | ft²														4,500
Sublease extension term (in months)														39 months
Sublease Agreement, Third Amendment | Affiliated entity
Related Party Transaction [Line Items]
Area of premises subleased (in square feet) | ft²					145
Proportionate share of net payable					93.60%
Second amendment to sublease | Affiliated entity
Related Party Transaction [Line Items]
Area of premises subleased (in square feet) | ft²													1,277
Payments to related party										232	224	218
Genius Sublease Agreement | Affiliated entity
Related Party Transaction [Line Items]
Number of sublease contracts to other party | contract							1
Area of premises subleased to other party (in square feet) | ft²							848
Sublease term to other party (in months)							62 months
Total sublease rental payments to be received							$ 446
Investments Research Sublease Agreement | Affiliated entity
Related Party Transaction [Line Items]
Number of sublease contracts to other party | contract							1
Area of premises subleased to other party (in square feet) | ft²							848
Sublease term to other party (in months)							62 months
Total sublease rental payments to be received							$ 446
Genius Sublease Agreement And Investments Research Sublease Agreement | Affiliated entity
Related Party Transaction [Line Items]
Sublease income										186	156
Akeso Supply Agreement | Related party
Related Party Transaction [Line Items]
Research and development										46,133	24,635	$ 6,207
Accrued liabilities										$ 1,215	$ 3,956
Consulting Agreement | Affiliated entity
Related Party Transaction [Line Items]
Exercised (in shares) | shares									315,681
[1] Refer to Note 15 – Related Party Transactions for expenses incurred.

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