This article is an attempt to interpret Yuk Hui’s ambitious and promising project of cosmotechnics and technodiversity as a kind of “critical synthesis” of the philosophies of technology of Martin Heidegger and Bernard Stiegler, arguably his most important interlocutors besides Gilbert Simondon, whose crucial influence will have to remain undiscussed here unfortunately. It argues that the cosmotechnics–technodiversity project – motivated foremost by the concern for the relentless destruction of planetary diversity in all its forms (biological, ecological, ethnic, psychological, sociological, cultural, etc.) engendered by a globalized “mono-technological” technosphere originating from Western technology – criticizes but also aims to do justice to both Heidegger’s ontological or onto-historical understanding of technology as a singular yet universalizing imperative or claim driving the development of concrete technologies Gestell or enframing, and Stiegler’s organological understanding of technology as an evolutionary process of technical exteriorization or exosomatization fundamentally conditioning any ontological and cosmological opening of anthropos, i.e., of what Heidegger called Dasein. Hui’s plural cosmotechnics critically acknowledges yet pluralizes both perspectives, thus teaching a pluri-ontological and pluri-cosmological conditioning of technology as well as a pluri-technological conditioning of the ontological and the cosmological. Using terms derived from Peter Sloterdijk’s interpretation of Heidegger’s “ontokinetics,” it is shown that it thus gives due to both a “vertical,” Heideggerian or “spiritual” dimension and a “horizontal,” Stieglerian or “materialist” dimension to the question concerning technology. This new and original, cosmotechnical perspective on these two fundamental views on the question concerning technology allows Hui to engage philosophy of technology in the overdue debate with contemporary anthropology’s so-called ontological turn, increasingly urgent in today’s age of the Anthropocene.