With the use of data-driven algorithmic tools, users may swiftly analyse vast volumes of data, identify patterns in the data that are otherwise impossible for people to see, and provide accurate forecasts. These resources have shown to be beneficial in domestic juridical practice, negotiations, and other areas of law that are intimately linked to International Law (IL). However, in their handling of international relations, countries, and their international attorneys have disregarded this new set of instruments. This article makes the case that nations need to start making the most of these resources when drafting and enforcing IL. These powers could assist governments in making decisions during treaty negotiations, international court cases, and assessments of the applicability of customary law. International attorneys representing countries need to consider the prospect that countries like China may start using big data and machine learning in ways that will increase their power, even if they are dubious about the merits of new technologies. The international legal system and relations will be significantly impacted by high-tech international legal practice. Less powerful governments will benefit greatly from easily accessible tools, but more sophisticated technology is likely to widen the already existing power disparities. Thus, the Article provides strategies for weaker states and external players to offset technology-induced changes in power that might threaten the long-term goals of IL.