The　current　International　Building　Code　limits　the　use　of　high　strength　materials　(Fy　≥　450　MPa　and　f＇c　≥　70　MPa)　in　composite　special　moment　frames　(C-SMFs).　This　paper　addresses　the　knowledge　gap　by:　(1)　developing　and　benchmarking　analytical　models　for　investigating　the　seismic　behavior　of　C-SMFs　with　concrete-filled　steel　tube　(CFT)　columns　made　from　high　strength　materials,　and　(2)　using　the　benchmarked　models　to　conduct　nonlinear　static　pushover　(NSP)　and　nonlinear　time-history　(NTH)　analyses.　The　NSP　analyses　were　conducted　to　investigate　the　lateral　load　behavior　of　high　strength　C-SMFs　and　evaluate　the　ASCE　7-16　recommended　seismic　design　parameters.　The　NTH　analyses　were　conducted　to:　(1)　investigate　the　seismic　behavior　of　high　strength　C-SMFs　and　evaluate　the　global　and　local　performance,　and　(2)　evaluate　higher　mode　effects　and　dynamic　stability.　Results　from　the　NSP　and　NTH　analyses　are　summarized　in　this　paper　and　used　to　illustrate　the　seismic　behavior　of　C-SMFs　with　high　strength　CFT　columns.　©　11th　National　Conference　on　Earthquake　Engineering　2018.　All　rights　reserved.