Best-fit SED of U37126 derived with CIGALE (solid black curve) and a pure stellar 5 Myr old BPASS model (CSFH with Z/Z_⊙ = 15%, dashed violet line). The NIRSpec/PRISM and MIRI/LRS spectra are shown in gray and red, respectively, and NIRCam photometric measurements and MIRI/LRS synthetic photometry are indicated by blue and red circles. The inset panel displays the posterior probability density function of the Lyman continuum escape fraction.