OpenAI Launches Astra for Law, Targeting Major Legal Firms
OpenAI launched Astra for Law on Sept 17, 2026, combining GPT-6 Astra and a large legal search index.
Why it matters: Astra for Law boosts legal research and drafting efficiency by integrating AI with an extensive legal data set. This release underscores AI’s growing role in law firms’ daily workflows while cautiously addressing safety.
- Astra for Law combines GPT-6 Astra with a legal index of over 230 million URLs, covering nearly all published U.S. case law.
- It achieved a 54.0% pass rate on OpenAI's 200-question legal benchmark, outperforming GPT-6 Astra alone at 38.7%.
- Early testers include Latham & Watkins, Ropes & Gray, Cooley, and Sullivan & Cromwell.
- Advanced cybersecurity features are initially limited to trusted testers to manage safety risks.
OpenAI unveiled Astra for Law on September 17, 2026. This new tool integrates the GPT-6 Astra AI with a specialized legal search index containing over 230 million URLs. The index is largely sourced from the Free Law Project’s CourtListener, which includes more than 99.9% of U.S. precedential case law.
On OpenAI's private 200-question legal exam designed to evaluate AI's legal knowledge, Astra for Law scored 54.0% correct answers. In comparison, the base GPT-6 Astra model, which relies on general web search, scored 38.7%. This improvement highlights the benefit of a focused legal data set over broader internet data.
Major law firms such as Latham & Watkins, Ropes & Gray, Cooley, and Sullivan & Cromwell have begun testing Astra for Law. Their feedback emphasizes gains in legal research speed and drafting accuracy, indicating smoother workflow integration.
Due to ongoing safety concerns, OpenAI has restricted Astra’s advanced cybersecurity capabilities to a trusted testing group. As Axios reported, this phased rollout prioritizes careful deployment and risk management rather than immediate widespread access.
Jason Boehmig, OpenAI’s Head of Legal Product, said the company prioritizes delivering useful tools that fit users' needs over competing for market share.
This launch offers legal professionals an early example of how AI can enhance firm workflows by improving research and drafting while addressing safety and accuracy concerns—two major issues as law firms adopt AI technology.
By the numbers:
- 230M+ URLs — size of Astra's legal search index
- 54.0% — Astra for Law’s pass rate on OpenAI’s 200-question legal benchmark
- 38.7% — pass rate of GPT-6 Astra alone on the same benchmark
Yes, but: OpenAI's heavy reliance on internal benchmark results and a single independent Axios report limits broader third-party validation of Astra's performance and safety claims.
What's next: OpenAI plans to expand access to Astra’s cybersecurity features as safety protocols are proven effective, potentially broadening firm participation in coming months.