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We report the discovery of two short-period Saturn-mass planets, onetransiting the G subgiant TOI-954 (TIC 44792534, $ V = 10.343 $, $ T = 9.78 $)observed in TESS sectors 4 and 5, and one transiting the G dwarf K2-329 (EPIC246193072, $ V = 12.70 $, $ K = 10.67 $) observed in K2 campaigns 12 and 19. Weconfirm and characterize these two planets with a variety of ground-basedarchival and follow-up observations, including photometry, reconnaissancespectroscopy, precise radial velocity, and high-resolution imaging. Combiningall available data, we find that TOI-954 b has a radius of$0.852_{-0.062}^{+0.053} \, R_{\mathrm{J}}$ and a mass of$0.174_{-0.017}^{+0.018} \, M_{\mathrm{J}}$ and is in a 3.68 day orbit, whileK2-329 b has a radius of $0.774_{-0.024}^{+0.026} \, R_{\mathrm{J}}$ and a massof $0.260_{-0.022}^{+0.020} \, M_{\mathrm{J}}$ and is in a 12.46 day orbit. AsTOI-954 b is 30 times more irradiated than K2-329 b but more or less the samesize, these two planets provide an opportunity to test whether irradiationleads to inflation of Saturn-mass planets and contribute to future comparativestudies that explore Saturn-mass planets at contrasting points in theirlifetimes.

TOI-954 b and K2-329 b: Short-Period Saturn-Mass Planets that Test whether Irradiation Leads to Inflation