Comparison between observed metallicity for the JWST sample and the predictions of the FMR, here adopting the formalism from Andrews & Martini 2013. The three panels show, from left to right, the offset from the FMR as a function of redshift, and the measured versus FMR-predicted metallicities based on two different SFR estimates, namely the fiducial value adopted throughout the paper (and based on BEAGLE fitting to both R100 spectra and photometry), and the Hα-based SFR based on the calibration from Kennicutt & Evans 2012, respectively. In the latter case, the SFRs are higher on average by ∼0.23 dex than our fiducial values, and by ∼0.37 dex compared to the SFR-calibration for metal poor galaxies, decreasing μ_α and improving the agreement with the predictions of the Andrews & Martini 2013 parametrisation of the FMR, especially at z∼4; nonetheless, higher redshift (z > 6) galaxies still sit preferentially below the FMR, appearing metal deficient compared to local galaxies at fixed M_⋆ and SFR.