In general, both Martini 2 and Martini 3 were able to recover the length-tilt dependence of WALPs -most visibly for WALP27, which is the longest of the tested peptides (Figure ). Martini 3 seems to be more sensitive in that WALP23 is also seen to tilt. This is in agreement with reported WALP23 behavior in DMPC and is also an improvement over Martini 2, with which WALP23 does not significantly tilt. The DMPC membrane was also observed to become thinner near the peptides. With Martini 3, this occurred for all peptides, even the longer WALP27, whereas with Martini 2 WALP27 caused a small local thickening instead (see Supplementary Figure ).