Gurobi includes a compiled R API package that is compatible with whatever version of R was current at the time of that Gurobi version's release. Below is a list of Gurobi versions and the R versions they support:
| Gurobi version | R version |
| 9.0 | 3.6 |
| 8.1 | 3.5 |
| 8.0 | 3.4 |
| 7.5 | 3.4 |
| 7.0 | 3.3 |
You may see the following warning if you try to use the package from a different R version:
package ‘gurobi’ was installed by an R version with different internals