# Sullivan & Cromwell builds legal tool Agreement Analyzer with OpenAI

Digest AI · Enterprise & Industry · published 2026-10-15T00:00:00Z

Canonical: https://digestai.news/story/sullivan-cromwell-builds-legal-tool-agreement-analyzer-with-openai

## Summary

Law firm Sullivan & Cromwell has developed Agreement Analyzer, an AI tool created in collaboration with OpenAI to assist lawyers in reviewing draft agreements. Initially created as a single-user proof of concept using Codex by partner John Savva, the tool now integrates ChatGPT Enterprise, curated firm precedents, and negotiating playbooks into a multi-user workflow.

Agreement Analyzer uses specialized agents that perform review cycles in parallel to analyze contract terms against client priorities and market practice. The process uses an adversarial setup where agents challenge each other's conclusions, distinguishing verified findings from unverified issues. The system outputs a memorandum and suggested tracked changes for lawyers to review, adapt, or reject.

Sullivan & Cromwell partner John Savva noted that improvements in AI analytical capabilities have enabled automation for complex tasks beyond basic administrative work. He highlighted advances in reasoning capabilities with GPT-6 Astra as a key factor in improving the quality of legal research and writing workflows.

## Key points

- Sullivan & Cromwell created Agreement Analyzer in collaboration with OpenAI to automate draft agreement reviews.
- The tool uses ChatGPT Enterprise and multi-agent adversarial processing to evaluate contract terms against firm playbooks.
- Partner John Savva noted that reasoning capabilities in models like GPT-6 Astra advance complex legal analysis.

## Why it matters

The collaboration highlights how professional service firms are moving beyond basic administrative AI uses toward multi-agent reasoning systems that assist with complex core tasks like legal contract analysis.

## Sources

1. [Sullivan & Cromwell brings legal expertise into agreement review](https://openai.com/index/sullivan-cromwell) (OpenAI, 2026-10-15, primary source)

## Cite

Digest AI, "Sullivan & Cromwell builds legal tool Agreement Analyzer with OpenAI", 15 October 2026, https://digestai.news/story/sullivan-cromwell-builds-legal-tool-agreement-analyzer-with-openai

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