| Document and Entity Information | Nov. 21, 2022 |
| Entity Information [Line Items] | |
| Document Type | 8-K |
| Document Period End Date | Nov. 21, 2022 |
| Entity Registrant Name | RIGETTI COMPUTING, INC. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-40140 |
| Entity Tax Identification Number | 88-0950636 |
| Entity Address, Address Line One | 775 Heinz Avenue |
| Entity Address, City or Town | Berkeley |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 94710 |
| City Area Code | 510 |
| Local Phone Number | 210-5550 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Amendment Flag | false |
| Entity Central Index Key | 0001838359 |
| Common Stock, $0.0001 par value per share [Member] | |
| Entity Information [Line Items] | |
| Security 12b Title | Common Stock, $0.0001 par value per share |
| Trading Symbol | RGTI |
| Security Exchange Name | NASDAQ |
| Warrants, each whole warrant exercisable for one share of Common Stock at an exercise price of $11.50 per share [Member] | |
| Entity Information [Line Items] | |
| Security 12b Title | Warrants, each whole warrant exercisable for one share of Common Stock at an exercise price of $11.50 per share |
| Trading Symbol | RGTIW |
| Security Exchange Name | NASDAQ |
