Stock-Based Compensation - Schedule of Stock Option Activity (Details) - Stock Options $ / shares in Units, $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2025 USD ($) $ / shares shares	Dec. 31, 2024 USD ($) $ / shares shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Outstanding. Stock Options, Beginning Balance | shares	16,220,605
Options granted, Stock Options | shares	9,503,984
Exercised, Stock Options | shares	(110,228)
Options cancelled or forfeited, Stock Options | shares	(1,931,407)
Options expired, Stock Options | shares	(96,043)
Outstanding. Stock Options, Ending Balance | shares	23,586,911	16,220,605
Options exercisable at September 30, 2025, Stock Options | shares	8,247,474
Outstanding, Weighted Average Exercise Price, Beginning balance | $ / shares	$ 3.29
Options granted, Weighted Average Exercise Price | $ / shares	1.89
Exercised, Weighted Average Exercise Price | $ / shares	1.44
Options cancelled or forfeited, Weighted Average Exercise Price | $ / shares	2
Options expired, Weighted Average Exercise Price | $ / shares	2.13
Outstanding, Weighted Average Exercise Price, Ending balance | $ / shares	2.85	$ 3.29
Options exercisable at September 30, 2025, Weighted Average Exercise Price | $ / shares	$ 4.55
Outstanding, Weighted Average Remaining Contractual Life	8 years 4 months 24 days	8 years 8 months 12 days
Options exercisable at September 30, 2025, Weighted Average Remaining Contractual Life	7 years 6 months
Outstanding, Aggregate Intrinsic Value, Beginning Balance | $	$ 1,967
Outstanding, Aggregate Intrinsic Value, Ending Balance | $	31,133	$ 1,967
Options exercisable at September 30, 2025, Aggregate Intrinsic Value | $	$ 10,314