Cover |
Jun. 02, 2025 |
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| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Jun. 02, 2025 |
| Registrant Name | Bicara Therapeutics Inc. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-42271 |
| Entity Tax Identification Number | 85-2903745 |
| Entity Address, Address Line One | 116 Huntington Avenue, |
| Entity Address, Address Line Two | Suite 703 |
| Entity Address, City or Town | Boston |
| Entity Address, State or Province | MA |
| Entity Address, Postal Zip Code | 02116 |
| City Area Code | 617 |
| Local Phone Number | 468-4219 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, $0.0001 par value |
| Trading Symbol | BCAX |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Amendment Flag | false |
| Central Index Key | 0002023658 |
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