Stock Option Plan and Stock-Based Compensation - Summary of Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2025	Dec. 31, 2024
Share-Based Payment Arrangement [Abstract]
Number of Shares Underlying Outstanding Options as of December 31, 2024	1,144,690
Number of Shares Underlying Outstanding Options, Options assumed in the Merger	169
Number of Shares Underlying Outstanding Options as of March 31, 2025	1,144,859	1,144,690
Number of Shares Underlying Outstanding Options, Exercisable as of March 31, 2025	361,037
Number of Shares Underlying Outstanding Options, Vested and expected to vest as of March 31, 2025	1,144,859
Weighted Average Exercise Price Per Share, Options outstanding as of December 31, 2024	$ 0.81
Weighted Average Exercise Price Per Share, Options assumed in the Merger	35.42
Weighted Average Exercise Price Per Share, Options outstanding at March 31, 2025	0.82	$ 0.81
Weighted Average Exercise Price Per Share, Options Exercisable as of March 31, 2025	0.76
Weighted Average Exercise Price Per Share, Options Vested and expected to vest as of March 31, 2025	$ 0.82
Weighted Average Remaining Contractual Term (in years), Options outstanding	8 years 11 months 23 days	9 years 2 months 23 days
Weighted Average Remaining Contractual Term (in years), Exercisable as of March 31, 2025	8 years 7 months 24 days
Weighted Average Remaining Contractual Term (in years), Vested and expected to vest as of March 31, 2025	8 years 11 months 23 days
Aggregate Intrinsic Value, Options outstanding at December 31, 2024	$ 20,160
Aggregate Intrinsic Value, Options outstanding at March 31, 2025	44,664	$ 20,160
Aggregate Intrinsic Value, Exercisable as of March 31, 2025	14,106
Aggregate Intrinsic Value, Vested and expected to vest as of March 31, 2025	$ 44,664

Share-based compensation arrangement by share-based payment award, options assumed in the merger.

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Share-based compensation arrangements by share-based payment award, options, options assumed in the merger, weighted average exercise price.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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- Definition

Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
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-Name Accounting Standards Codification
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Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest options outstanding. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Number of fully vested and expected to vest options outstanding that can be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Weighted-average exercise price, at which grantee can acquire shares reserved for issuance, for fully vested and expected to vest options outstanding. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of non-vested options outstanding.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for fully vested and expected to vest options outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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