| Document and Entity Information Document | Mar. 25, 2022 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Mar. 25, 2022 |
| Entity Registrant Name | Olo Inc. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-40213 |
| Entity Tax Identification Number | 20-2971562 |
| Entity Address, Address Line One | 285 Fulton Street |
| Entity Address, Address Line Two | One World Trade Center |
| Entity Address, Address Line Three | 82nd Floor |
| Entity Address, City or Town | New York |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 10007 |
| City Area Code | 212 |
| Local Phone Number | 260-0895 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Class A Common Stock, $0.001 par value per share |
| Trading Symbol | OLO |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Entity Central Index Key | 0001431695 |
| Amendment Flag | false |
