G5 Labs

G5 Labs is building a self-learning, bi-directional compiler that translates natural-language descriptions of software intent into executable code and maps existing code back into a formal graph of intent. That graph, which the company calls an ontology, becomes the source code teams manage, so they can resolve merge conflicts at a semantic level, trace code to its intent and enforce policies such as GDPR.

The platform works as an application and governance layer over various AI coding models, and its early focus is large enterprises in regulated sectors such as financial services. Initial uses include modernising legacy software and building custom applications to replace third-party SaaS.

G5 Labs is a spinout from MIT's Computer Science and Artificial Intelligence Laboratory, based on research that began about two years before launch. It emerged from stealth on 15 September 2026 with a $14 million seed round co-led by Pillar VC and Battery Ventures.

Co-founder and CEO Tim Kraska is a professor at MIT CSAIL who previously co-founded Einblick Analytics, later acquired by Databricks, and held roles at Google Brain and Amazon. Co-founders Ziniu Wu and Davide Pagano both previously worked at Amazon Web Services.