On July 22, 2026, Willkie Farr & Gallagher announced a partnership with OpenAI aimed at accelerating firmwide artificial intelligence innovation across its legal workflows. The collaboration is notable not only for its scale but for its strategic depth: rather than layering off-the-shelf tools onto existing systems, Willkie is co-developing proprietary AI capabilities designed to serve the specific demands of complex legal practice. For clients, this development is a meaningful indicator of how the delivery of legal services is evolving.
The partnership includes a firmwide rollout of ChatGPT Enterprise, giving every lawyer and professional at the firm access to a secure, enterprise-grade generative AI environment. It also integrates OpenAI Codex into Willkie Works, the firm's proprietary development environment, enabling engineers and lawyers to collaborate on purpose-built tools tailored to legal tasks. This structure supports the creation of AI systems that reflect the firm's institutional knowledge, quality standards, and confidentiality obligations, rather than generic solutions adapted after the fact.
Willkie's move places it among the first international law firms to co-develop proprietary AI platforms with OpenAI for core legal functions such as legal research and document review. These are among the most time-intensive components of large matters, and their transformation through AI has direct implications for how quickly issues can be assessed, how comprehensively documents can be examined, and how efficiently teams can be deployed on complex engagements. Clients should reasonably expect that firms investing in these capabilities will be positioned to deliver faster turnaround, deeper analysis, and more predictable staffing on significant matters.
The broader signal for the legal industry is a shift from AI as a productivity add-on to AI as embedded infrastructure within top-tier firms. As this shift accelerates, in-house teams and general counsel may wish to reassess how their outside counsel are using AI, what safeguards are in place around confidentiality and quality control, and how the benefits of these tools are being reflected in service delivery, staffing models, and fee arrangements. Asking these questions now positions clients to capture value as the market continues to evolve.
This article is provided for general informational purposes only and does not constitute legal advice. Clients considering how AI-driven legal services may affect their engagements should seek tailored advice from qualified counsel.