OpenAI launches Astra for Law, a GPT-6 Astra foundation tuned for legal work

Introducing Astra for Law

OpenAI packaged GPT-6 Astra with a legal search index and custom instructions to create a foundation for law firms and legal-tech companies. The index covers over 230M URLs of U.S. case law, statutes, regulations, and administrative decisions, drawing on Free Law Project's CourtListener collection (99.9%+ of published U.S. precedential case law). On 200 questions from Vals AI's Legal Research Bench, Astra for Law hit 54.0% overall correctness vs. 38.7% for GPT-6 Astra with web search alone—a 40% relative gain. It found 24% more reference cases and retrieved up to 54% more relevant passages on case-law questions. Custom legal-analysis instructions help it distinguish holdings from dicta, address unfavorable cases, and explain how contract exceptions shift risk. It will roll out first via Trusted Access in ChatGPT and Codex, then the API as gpt-6-astra-law. The post does not disclose pricing or a general-availability date.

Why it matters: GPT-6 Astra's first vertical-industry release, backed by a concrete benchmark score rather than pure marketing. But 54% accuracy shows it's not yet reliable enough for production, and the post doesn't disclose pricing or real law-firm feedback — hence not scoring higher.