| Cover | Jan. 21, 2025 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Jan. 21, 2025 |
| Entity File Number | 001-41929 |
| Entity Registrant Name | ARRIVENT BIOPHARMA, INC. |
| Entity Central Index Key | 0001868279 |
| Entity Tax Identification Number | 86-3336099 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 18 Campus Boulevard |
| Entity Address, Address Line Two | Suite 100 |
| Entity Address, City or Town | Newtown Square |
| Entity Address, State or Province | PA |
| Entity Address, Postal Zip Code | 19073 |
| City Area Code | 628 |
| Local Phone Number | 277-4836 |
| 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 per share |
| Trading Symbol | AVBP |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
