KELT-7b atmospheric retrieval of the infrared occultations. Top left panel: retrievals assuming thermochemical equilibrium with PYRAT BAY (blue) and PLATON (pink). The solid curves with shaded areas show the median and 1σ span of the posterior model spectra, displayed at a resolution of R = 150. The black circle markers with error bars show observations used to constrain the models (HST and Spitzer). The green square markers show the CHEOPS and TESS occultation depths (not used as retrieval constraints). The diamond markers show the model spectra integrated over the observing bands. The insets zoom in on the regions probed by the observations. Top right panel: retrieved T–P profiles for each retrieval code (median and 1σ span from the posterior distribution, same color coding as previous panel). The gray hatched area denotes the range of pressures probed by the observations. Middle panels: same as above, but for the free-chemistry retrievals. Bottom panels: posterior distribution of the atmospheric composition parameters (same color coding as above). The labels on top of each posterior show the mean and 1σ uncertainties for each parameter posterior (denoted with a dashed line and shaded area, respectively). Some parameters have been omitted from this figure (see Table 5 for the full list of free parameters).