{"cik":1622229,"taxonomy":"us-gaap","tag":"RevenueFromContractWithCustomerIncludingAssessedTax","label":"Revenue from Contract with Customer, Including Assessed Tax","description":"Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.","entityName":"Cogent Biosciences, Inc.","units":{"USD":[{"start":"2017-01-01","end":"2017-03-31","val":1827000,"accn":"0001193125-19-089299","fy":2018,"fp":"FY","form":"10-K","filed":"2019-03-28","frame":"CY2017Q1"},{"start":"2017-01-01","end":"2017-06-30","val":3906000,"accn":"0001193125-18-247281","fy":2018,"fp":"Q2","form":"10-Q","filed":"2018-08-13"},{"start":"2017-04-01","end":"2017-06-30","val":2079000,"accn":"0001193125-18-247281","fy":2018,"fp":"Q2","form":"10-Q","filed":"2018-08-13"},{"start":"2017-04-01","end":"2017-06-30","val":2079000,"accn":"0001193125-19-089299","fy":2018,"fp":"FY","form":"10-K","filed":"2019-03-28","frame":"CY2017Q2"},{"start":"2017-01-01","end":"2017-09-30","val":6237000,"accn":"0001193125-18-324954","fy":2018,"fp":"Q3","form":"10-Q","filed":"2018-11-13"},{"start":"2017-07-01","end":"2017-09-30","val":2331000,"accn":"0001193125-18-324954","fy":2018,"fp":"Q3","form":"10-Q","filed":"2018-11-13"},{"start":"2017-07-01","end":"2017-09-30","val":2331000,"accn":"0001193125-19-089299","fy":2018,"fp":"FY","form":"10-K","filed":"2019-03-28","frame":"CY2017Q3"},{"start":"2017-01-01","end":"2017-12-31","val":8360000,"accn":"0001193125-19-089299","fy":2018,"fp":"FY","form":"10-K","filed":"2019-03-28","frame":"CY2017"},{"start":"2017-10-01","end":"2017-12-31","val":2123000,"accn":"0001193125-19-089299","fy":2018,"fp":"FY","form":"10-K","filed":"2019-03-28","frame":"CY2017Q4"},{"start":"2018-01-01","end":"2018-03-31","val":2220000,"accn":"0001193125-19-089299","fy":2018,"fp":"FY","form":"10-K","filed":"2019-03-28"},{"start":"2018-01-01","end":"2018-03-31","val":2220000,"accn":"0001193125-19-144768","fy":2019,"fp":"Q1","form":"10-Q","filed":"2019-05-13"},{"start":"2018-01-01","end":"2018-03-31","val":2220000,"accn":"0001564590-20-013188","fy":2019,"fp":"FY","form":"10-K","filed":"2020-03-26","frame":"CY2018Q1"},{"start":"2018-01-01","end":"2018-06-30","val":3886000,"accn":"0001193125-18-247281","fy":2018,"fp":"Q2","form":"10-Q","filed":"2018-08-13"},{"start":"2018-01-01","end":"2018-06-30","val":3886000,"accn":"0001564590-19-031485","fy":2019,"fp":"Q2","form":"10-Q","filed":"2019-08-12"},{"start":"2018-04-01","end":"2018-06-30","val":1666000,"accn":"0001193125-18-247281","fy":2018,"fp":"Q2","form":"10-Q","filed":"2018-08-13"},{"start":"2018-04-01","end":"2018-06-30","val":1666000,"accn":"0001193125-19-089299","fy":2018,"fp":"FY","form":"10-K","filed":"2019-03-28"},{"start":"2018-04-01","end":"2018-06-30","val":1666000,"accn":"0001564590-19-031485","fy":2019,"fp":"Q2","form":"10-Q","filed":"2019-08-12"},{"start":"2018-04-01","end":"2018-06-30","val":1666000,"accn":"0001564590-20-013188","fy":2019,"fp":"FY","form":"10-K","filed":"2020-03-26","frame":"CY2018Q2"},{"start":"2018-01-01","end":"2018-09-30","val":5929000,"accn":"0001193125-18-324954","fy":2018,"fp":"Q3","form":"10-Q","filed":"2018-11-13"},{"start":"2018-01-01","end":"2018-09-30","val":5929000,"accn":"0001564590-19-042995","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-12"},{"start":"2018-07-01","end":"2018-09-30","val":2043000,"accn":"0001193125-18-324954","fy":2018,"fp":"Q3","form":"10-Q","filed":"2018-11-13"},{"start":"2018-07-01","end":"2018-09-30","val":2043000,"accn":"0001193125-19-089299","fy":2018,"fp":"FY","form":"10-K","filed":"2019-03-28"},{"start":"2018-07-01","end":"2018-09-30","val":2043000,"accn":"0001564590-19-042995","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-12"},{"start":"2018-07-01","end":"2018-09-30","val":2043000,"accn":"0001564590-20-013188","fy":2019,"fp":"FY","form":"10-K","filed":"2020-03-26","frame":"CY2018Q3"},{"start":"2018-01-01","end":"2018-12-31","val":9734000,"accn":"0001193125-19-089299","fy":2018,"fp":"FY","form":"10-K","filed":"2019-03-28"},{"start":"2018-01-01","end":"2018-12-31","val":9734000,"accn":"0001564590-20-013188","fy":2019,"fp":"FY","form":"10-K","filed":"2020-03-26","frame":"CY2018"},{"start":"2018-10-01","end":"2018-12-31","val":3805000,"accn":"0001193125-19-089299","fy":2018,"fp":"FY","form":"10-K","filed":"2019-03-28"},{"start":"2018-10-01","end":"2018-12-31","val":3805000,"accn":"0001564590-20-013188","fy":2019,"fp":"FY","form":"10-K","filed":"2020-03-26","frame":"CY2018Q4"},{"start":"2019-01-01","end":"2019-03-31","val":3053000,"accn":"0001193125-19-144768","fy":2019,"fp":"Q1","form":"10-Q","filed":"2019-05-13"},{"start":"2019-01-01","end":"2019-03-31","val":3053000,"accn":"0001564590-20-013188","fy":2019,"fp":"FY","form":"10-K","filed":"2020-03-26"},{"start":"2019-01-01","end":"2019-03-31","val":3053000,"accn":"0001564590-20-024313","fy":2020,"fp":"Q1","form":"10-Q","filed":"2020-05-11","frame":"CY2019Q1"},{"start":"2019-01-01","end":"2019-06-30","val":6191000,"accn":"0001564590-19-031485","fy":2019,"fp":"Q2","form":"10-Q","filed":"2019-08-12"},{"start":"2019-01-01","end":"2019-06-30","val":6191000,"accn":"0001564590-20-039357","fy":2020,"fp":"Q2","form":"10-Q","filed":"2020-08-11"},{"start":"2019-04-01","end":"2019-06-30","val":3138000,"accn":"0001564590-19-031485","fy":2019,"fp":"Q2","form":"10-Q","filed":"2019-08-12"},{"start":"2019-04-01","end":"2019-06-30","val":3138000,"accn":"0001564590-20-013188","fy":2019,"fp":"FY","form":"10-K","filed":"2020-03-26"},{"start":"2019-04-01","end":"2019-06-30","val":3138000,"accn":"0001564590-20-039357","fy":2020,"fp":"Q2","form":"10-Q","filed":"2020-08-11","frame":"CY2019Q2"},{"start":"2019-01-01","end":"2019-09-30","val":7211000,"accn":"0001564590-19-042995","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-12"},{"start":"2019-01-01","end":"2019-09-30","val":7211000,"accn":"0001564590-20-052593","fy":2020,"fp":"Q3","form":"10-Q","filed":"2020-11-09"},{"start":"2019-07-01","end":"2019-09-30","val":1020000,"accn":"0001564590-19-042995","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-12"},{"start":"2019-07-01","end":"2019-09-30","val":1020000,"accn":"0001564590-20-013188","fy":2019,"fp":"FY","form":"10-K","filed":"2020-03-26"},{"start":"2019-07-01","end":"2019-09-30","val":1020000,"accn":"0001564590-20-052593","fy":2020,"fp":"Q3","form":"10-Q","filed":"2020-11-09","frame":"CY2019Q3"},{"start":"2019-01-01","end":"2019-12-31","val":22499000,"accn":"0001564590-20-013188","fy":2019,"fp":"FY","form":"10-K","filed":"2020-03-26"},{"start":"2019-01-01","end":"2019-12-31","val":22499000,"accn":"0001564590-21-013325","fy":2020,"fp":"FY","form":"10-K","filed":"2021-03-16","frame":"CY2019"},{"start":"2019-10-01","end":"2019-12-31","val":15288000,"accn":"0001564590-20-013188","fy":2019,"fp":"FY","form":"10-K","filed":"2020-03-26","frame":"CY2019Q4"},{"start":"2020-01-01","end":"2020-03-31","val":7031000,"accn":"0001564590-20-024313","fy":2020,"fp":"Q1","form":"10-Q","filed":"2020-05-11"},{"start":"2020-01-01","end":"2020-03-31","val":7031000,"accn":"0001564590-21-026737","fy":2021,"fp":"Q1","form":"10-Q","filed":"2021-05-12","frame":"CY2020Q1"},{"start":"2020-01-01","end":"2020-06-30","val":7559000,"accn":"0001564590-20-039357","fy":2020,"fp":"Q2","form":"10-Q","filed":"2020-08-11"},{"start":"2020-01-01","end":"2020-06-30","val":7559000,"accn":"0001564590-21-044445","fy":2021,"fp":"Q2","form":"10-Q","filed":"2021-08-16"},{"start":"2020-04-01","end":"2020-06-30","val":528000,"accn":"0001564590-20-039357","fy":2020,"fp":"Q2","form":"10-Q","filed":"2020-08-11"},{"start":"2020-04-01","end":"2020-06-30","val":528000,"accn":"0001564590-21-044445","fy":2021,"fp":"Q2","form":"10-Q","filed":"2021-08-16","frame":"CY2020Q2"},{"start":"2020-01-01","end":"2020-09-30","val":7871000,"accn":"0001564590-20-052593","fy":2020,"fp":"Q3","form":"10-Q","filed":"2020-11-09"},{"start":"2020-01-01","end":"2020-09-30","val":7871000,"accn":"0001564590-21-055947","fy":2021,"fp":"Q3","form":"10-Q","filed":"2021-11-10"},{"start":"2020-07-01","end":"2020-09-30","val":312000,"accn":"0001564590-20-052593","fy":2020,"fp":"Q3","form":"10-Q","filed":"2020-11-09"},{"start":"2020-07-01","end":"2020-09-30","val":312000,"accn":"0001564590-21-055947","fy":2021,"fp":"Q3","form":"10-Q","filed":"2021-11-10","frame":"CY2020Q3"},{"start":"2020-01-01","end":"2020-12-31","val":7871000,"accn":"0001564590-21-013325","fy":2020,"fp":"FY","form":"10-K","filed":"2021-03-16"},{"start":"2020-01-01","end":"2020-12-31","val":7871000,"accn":"0001564590-22-010238","fy":2021,"fp":"FY","form":"10-K","filed":"2022-03-15","frame":"CY2020"}]}}