Law firm Sullivan & Cromwell developed Agreement Analyzer, an AI tool for identifying issues in a draft agreement, in collaboration with OpenAI, according to an OpenAI page dated 2026-10-15 (OpenAI). On 2026-10-21, OpenAI described how AT&T is building on LegalEdge, its team applying AI to major legal matters, to support its in-house legal department (OpenAI).
Sullivan & Cromwell partner John Savva developed Agreement Analyzer as a single-user proof of concept built with Codex (OpenAI). He then worked with OpenAI on output quality, efficiency through parallel processing and a version that multiple lawyers could use at the same time (OpenAI).
Key Facts
| Item | Detail | Source |
|---|---|---|
| Tool | Agreement Analyzer, for identifying issues in a draft agreement | OpenAI |
| Origin | Single-user proof of concept built with Codex by partner John Savva | OpenAI |
| Output | A memorandum and proposed tracked changes for a lawyer to review, adapt or reject | OpenAI |
| AT&T effort | Builds on LegalEdge, with a planned natural language intake system | OpenAI |
Timeline
- 2026-10-15: OpenAI published its account of Sullivan & Cromwell’s Agreement Analyzer (OpenAI).
- 2026-10-21: OpenAI published its account of AT&T’s legal work with OpenAI (OpenAI).
Details (as Reported)
According to OpenAI, Agreement Analyzer integrates Sullivan & Cromwell’s workflows, curated firm precedents, negotiating playbooks and ChatGPT Enterprise (OpenAI). After a lawyer inputs a draft agreement, the lawyer can add selected precedents, a playbook with firm and client positions, and information on market practice (OpenAI). The tool performs multiple review cycles from different perspectives and synthesizes the outputs (OpenAI).
Savva described an application in which agents develop conclusions and other agents challenge them in an adversarial process (OpenAI). The results distinguish findings supported after challenge, dismissed findings, and unverified issues retained with qualifications (OpenAI). He also stated that an AI tool’s output is trustworthy only with full transparency, and he pointed to reasoning advances in GPT-6 Astra (OpenAI).
AT&T’s in-house legal department has hundreds of lawyers and legal professionals around the world (OpenAI). Chief Compliance Officer Bill Ryan described a planned intake system with a front door of natural language intake that would classify and prioritize requests (OpenAI). The system would also connect requests with relevant precedent, research and past work, and give the responsible legal professional historical context and recommended first steps (OpenAI). General Counsel David McAtee stated that the decision making will always remain with the lawyers (OpenAI).