OpenAI has launched Astra for Law—a specialized AI platform for the legal sector that combines GPT-6 Astra with a dedicated legal index, analysis, and legal drafting guidelines. This represents OpenAI’s first “vertical AI” product designed specifically for an industry, signaling a shift from general-purpose models to domain-specific solutions.

Astra for Law comes equipped with a new legal index that allows users to search U.S. case law, statutes, regulations, and administrative decisions across more than 230 million URLs, with sources updated daily. OpenAI partnered with the Free Law Project, the nonprofit behind CourtListener, to integrate a case law repository covering more than 99.9% of published precedential U.S. case law.

On the Vals AI Legal Research Bench consisting of 200 legal research questions, Astra for Law achieved 54% correct answers at its highest reasoning effort level, compared to 38.7% for GPT-6 Astra relying on standard web search. In terms of case retrieval, Astra for Law located 24% more cited authorities and retrieved up to 54% more relevant excerpts from the correct opinions.

In one real-world test requesting precedents for a commercial fraud lawsuit, Astra for Law delivered two highly relevant cases, while Claude Fable 5.1 returned an opinion that had been overturned on appeal.

Partner Ecosystem

Astra for Law will initially be rolled out to select law firms via Trusted Access in ChatGPT and Codex, followed by broader availability through the API. The model appears in the model picker as “GPT-6 Astra Law” and in the API under gpt-6-astra-law.

Early API partners include Harvey and Legora—two prominent legal tech firms. OpenAI is also releasing 26 new ecosystem plugins to connect ChatGPT with specialized tools already used by law firms, including Relativity and Clio.

On the privacy front, OpenAI created a dedicated Trusted Access program for law firms that includes Zero Data Retention on the API and disables human review by default for ChatGPT Enterprise users. Law firm Latham & Watkins is collaborating to help design information access controls, ethical walls, and internal oversight mechanisms.

OpenAI’s New Strategy

Astra for Law indicates that OpenAI is pivoting toward vertical AI—tailoring frontier models into specialized solutions for individual industries. Rather than competing directly against legal tech vendors with an all-purpose model, OpenAI is providing the platform on which companies like Harvey can build.

It also signals that “one model fits all” is giving way to “one model, many configurations.” If this strategy proves effective in the legal space, other sectors such as healthcare, finance, and accounting are expected to follow.