OpenAI lleva su IA al sector legal con Astra for Law

OpenAI is expanding its artificial intelligence (AI) capabilities into the legal sector with the launch of Astra for Law, a tailored version of its GPT-6 Astra model. Designed specifically for the legal industry, this infrastructure enables law firms and tech legal companies to build their own applications and workflows using OpenAI's AI technology.

The new solution combines GPT-6 Astra with a legal search index, specialized instructions for legal analysis and writing, and control tools aligned with the needs of law firms. This allows the AI to go beyond simply generating text and support processes such as legal research, contract analysis, argument preparation, and risk identification.

One key element of Astra for Law is its expansive legal search index, which compiles over 230 million URLs containing jurisprudence, legislation, regulatory documents, procedural rules, and administrative decisions from the United States. The index incorporates information from over 230 million URLs, with new sources added daily, and covers more than 99.9% of published U.S. case law, thanks to OpenAI's collaboration with the Free Law Project.

OpenAI tested Astra for Law using 200 legal research queries from the private validation set of Vals AI. In this evaluation, the system outperformed GPT-6 Astra web search by 54% correct answers compared to 38.7%, representing a 40% relative improvement.

However, OpenAI cautions that users must review AI-generated answers, as the system is intended to support legal work, not replace professional review. The company also emphasizes that Astra for Law incorporates instructions to apply legal information to specific cases, develop arguments, identify weaknesses, and analyze how certain contract clauses can affect risk distribution.

To ensure confidentiality, OpenAI has created a Trusted Access program for select law firms, offering features like zero data retention on the API and exclusions of ChatGPT Enterprise content from human review. The company is also working directly with major firms to develop customized tools aligned with their workflows, including Sullivan & Cromwell's contract analyzer, Ropes & Gray's due diligence process, and Cooley's GO Public tool for IPO preparations.

Confidentiality and control over AI use are paramount, and OpenAI is partnering with firms such as Latham & Watkins to address information permissions, ethical boundaries between teams, client instructions, and internal AI system supervision. As AI capabilities advance, OpenAI aims to provide an infrastructure that allows legal professionals to build specialized products using their expertise, data, procedures, and professional criteria.