A K − 4.5 μm color–magnitude diagram highlighting the location of our objects observed with JWST along with the distribution of low-mass members from the σ Orionis (B. Damian et al. 2023b) and Chamaeleon I (T. L. Esplin et al. 2017) star-forming regions of a similar age. The magnitudes are in absolute scale, transformed using their respective extinction and distance to the cluster (see Table 1 for values). The black and red curves show the 2 Myr isochrones from I. Baraffe et al. (2015) and M. W. Phillips et al. (2020), respectively. Masses corresponding to the K-band magnitudes are on the right.