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Net Loss Per Share Attributable to Common Stockholders - Potentially dilutive securities excluded from computation (Details) - shares	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Net Income (Loss) Per Share Attributable to Common Stockholders
Potential dilutive shares excluded from computation of diluted net loss per share	23,023,169	8,878,493
Employee Stock Option
Net Income (Loss) Per Share Attributable to Common Stockholders
Potential dilutive shares excluded from computation of diluted net loss per share	20,090,359	8,683,467
RSUs issued and outstanding
Net Income (Loss) Per Share Attributable to Common Stockholders
Potential dilutive shares excluded from computation of diluted net loss per share	2,670,905
Common stock issuable under the 2024 ESPP
Net Income (Loss) Per Share Attributable to Common Stockholders
Potential dilutive shares excluded from computation of diluted net loss per share	241,027
Early exercised stock options and unvested restricted common stock
Net Income (Loss) Per Share Attributable to Common Stockholders
Potential dilutive shares excluded from computation of diluted net loss per share	20,878	195,026

X

- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482662/260-10-50-1

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482662/260-10-50-1

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