The search for high-temperature superconductivity among pressure-stabilized hydrides has received great interest since theory-directed clathrate hydrides, such as ${\mathrm{CaH}}_6, {\mathrm{YH}}_6, {\mathrm{YH}}_9$, and ${\mathrm{LaH}}_{10}$, were synthesized and shown to exhibit a superconducting critical temperature ($T_{\mathrm{c}}$) above 200 K. However, further tuning the superconductivity and stability of these prominent hydrides to enhance their applicability remains a significant challenge. Here, taking the sodalitelike clathrate prototype $M{\mathrm{H}}_6$ ($M=\mathrm{Ca}$, Y, etc.) as an example, we investigate the stability and superconductivity of multicomponent metal hydrides containing four different metal atoms per structure. High-throughput simulations of 1820 $ABCD{\mathrm{H}}_{24}$ quinary hydrides, with initial symmetry of $F\overline{4}3m$ and varying metal atoms ($A, B, C$, and $D$), were conducted. The results identified 119 dynamically stable structures at 300 GPa, with 67 exhibiting superconductivity exceeding 200 K, and 20 having $T_{\mathrm{c}}$ values above 260 K. Notably, $\left(\mathrm{Na},\mathrm{Zr},\mathrm{Mg},\mathrm{Hf}\right){\mathrm{H}}_6$ is predicted to approach room temperature $T_{\mathrm{c}}$ at 250 GPa. Both configurational and vibrational entropy are crucial for stabilizing these alloys. $\left(\mathrm{Na},\mathrm{Y},\mathrm{Zr},\mathrm{Hf}\right){\mathrm{H}}_6, \left(\mathrm{Mg},\mathrm{Zr},\mathrm{Sc},\mathrm{Y}\right){\mathrm{H}}_6$, and $\left(\mathrm{Mg},\mathrm{Hf},\mathrm{Ca},\mathrm{Zr}\right){\mathrm{H}}_6$ were computed to be thermodynamically stable, making them promising candidates for experimental synthesis. These quinary superconducting hydrides may facilitate the realization of very high-temperature superconductors being stable over a broader range of conditions than binary or ternary systems.

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• Composition
• Electronic structure
• Methods in superconductivity
• Structural properties
• Superconductivity
• Superconductors
• Thermodynamics