Easier \cmidrule things, thanks to https://tex.stackexchange.com/a/549873/72038

cmidrulez.tex

\usepackage{xparse}

\ExplSyntaxOn
\NewExpandableDocumentCommand{\cmidrulez}{m}
 {
  \noalign { \__leviathan_cmidrulez:n { #1 } }
  \tl_use:N \g__leviathan_cmidrulez_tl
 }

\tl_new:N \g__leviathan_cmidrulez_tl
\int_new:N \l__leviathan_cmidrulez_int

\cs_new_protected:Nn \__leviathan_cmidrulez:n
 {
  \tl_gclear:N \g__leviathan_cmidrulez_tl
  \int_zero:N \l__leviathan_cmidrulez_int
  \clist_map_inline:nn { #1 }
   {
    \str_if_eq:nnTF { ##1 } { * }
     {% no rule here
      \int_incr:N \l__leviathan_cmidrulez_int
     }
     {
      \tl_gput_right:Nx \g__leviathan_cmidrulez_tl
       {
        \exp_not:N \cmidrule(lr)
         {% start
          \int_eval:n { \l__leviathan_cmidrulez_int + 1 }
          -
          \int_eval:n { \l__leviathan_cmidrulez_int + ##1 }
         }
       }
      \int_add:Nn \l__leviathan_cmidrulez_int { ##1 }
     }
   }
 }

\ExplSyntaxOff

usage.tex

\begin{table}[h]
    \centering
    \begin{tabular}{lllll}
        \toprule
        \multirow{2}{*}{Models} & \multicolumn{3}{c}{Metric 1} & Metric 2\\
        \cmidrulez{*,3,1} \\
        {} & precision & recall & F-score  & R@10 \\
        \midrule
        model 1 & 0.67  & 0.8 & 0.729  & 0.75 \\
        model 2 & 0.8 & 0.9 & 0.847 & 0.85 \\
        \bottomrule
    \end{tabular}
\end{table}