Re: What’s the version of Cplex Studio in DOC 3.9? Hi then use 3.9.0.1 since it embeds cplex 12.7 as said at https://www.ibm.com/support/knowledgecenter/en/SSQVNT_3.9.0/ilog.odms.ide.odm.enterprise.help/ODME/RelNotes/topics/DOcenter_relnotes3901.html regards Source: Re: What’s the version of Cplex Studio in DOC 3.9?