OpenAI Agreement Analyzer: Sullivan & Cromwell builds AI contract review tool

Posted on Oct 30 • Originally published at coldcasetech.com

Disclosure: this post contains affiliate links. We may earn a commission at no extra cost to you.

Then vs. Now (News report): Then: OpenAI announced that Sullivan & Cromwell, in collaboration with OpenAI, developed Agreement Analyzer, an AI tool for identifying issues in a draft agreement. Now: OpenAI describes the tool as returning a memorandum and proposed tracked changes for a lawyer to review, adapt or reject, and describes AT&T's planned intake system as a next step.

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 ).

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 ).

Turn text into natural-sounding speech. ElevenLabs generates voiceovers and narration from text, in many voices and languages. Try ElevenLabs (affiliate link)

These are affiliate links: we may earn a commission at no extra cost to you. As an Amazon Associate, ColdCaseTech earns from qualifying purchases.

ColdCaseTech is an independent record of technology's promises: every line links to its source. New cases daily at coldcasetech.com. Follow on X, Bluesky or Telegram.