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We report low-threshold high-temperature operation of 7.4μm strain-compensated InGaAs/InAlAs quantum cascade lasers (QCLs). For an uncoated 22-μm-wide and 2-mm-long laser, the low-threshold current densities, I.e. 0.33kA/cm2 at 81 K in pulsed mode and 0.64kA/cm2 at 84 K in cw mode, are realized. High-temperature operation of uncoated devices, with a high value of 223 K, is achieved in cw mode.