| Document and Entity Information | Aug. 19, 2022 |
| Cover [Abstract] | |
| Security Exchange Name | NASDAQ |
| Amendment Flag | false |
| Entity Central Index Key | 0001850266 |
| Current Fiscal Year End Date | --12-31 |
| Document Type | 8-K |
| Document Period End Date | Aug. 19, 2022 |
| Entity Registrant Name | Akili, Inc. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-40558 |
| Entity Tax Identification Number | 98-1586159 |
| Entity Address, Address Line One | 125 Broad Street |
| Entity Address, Address Line Two | Fifth Floor |
| Entity Address, City or Town | Boston |
| Entity Address, State or Province | MA |
| Entity Address, Postal Zip Code | 02110 |
| City Area Code | (617) |
| Local Phone Number | 456-0597 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common stock, $0.0001 par value per share |
| Trading Symbol | AKLI |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
