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Introducing Astra for Law

OpenAI for Law brings frontier intelligence for law, custom firm workflows, connected legal data sources, and legal-grade controls for confidential client work.

O
OpenAI
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Content Specialist

OpenAI is a leader in artificial intelligence research and development, dedicated to creating innovative AI solutions for various industries, including law. Their expertise combines cutting-edge technology with a deep understanding of sector-specific challenges.

Expertise: Artificial intelligence, legal technology, AI model development, legal research solutions, privacy and governance in AI.
Published: September 24, 2026
7 min read

Quick Answer

Astra for Law is a groundbreaking AI foundation tailored for legal professionals, combining advanced capabilities of GPT-6 Astra with specialized tools for enhanced legal research and workflows.

TL;DR

Astra for Law introduces an innovative AI foundation specifically designed for law firms and legal tech, utilizing GPT-6 Astra to enhance legal workflows and research capabilities. With new ecosystem plugins and a robust legal search index, it empowers legal professionals to streamline their operations effectively.

Key Takeaways

  • 1Astra for Law integrates GPT-6 Astra with legal-specific tools and contexts.
  • 2API customers can customize their applications with 26 new ecosystem plugins.
  • 3The legal search index improves research efficiency, significantly enhancing accuracy and comprehensiveness.
Introducing Astra for Law

Practical how-to • For business readers

How to Leverage Astra for Law in Your Legal Practice

Law firms can enhance their research and workflows using Astra for Law.

  1. Identify relevant legal tools

    Review the 26 new ecosystem plugins mentioned in the article to see which ones connect with the tools your firm already uses, such as Relativity or Clio.

  2. Utilize the legal search index

    Incorporate Astra for Law's legal search index into your research process to improve the accuracy and comprehensiveness of your legal research.

  3. Evaluate research outcomes

    After using Astra for Law, assess the quality of the legal research answers it provides by comparing them to previous research methods to determine improvements.

Guidance prepared on September 24, 2026 • Source published September 17, 2026. Based on the article and its source; check with your IT team before changing work systems.

This guide may be out of date. Check the linked source and current instructions before acting.

Introducing Astra for Law

Our most powerful model, configured into a new AI foundation for law.

Today, we’re introducing Astra for Law: a new foundation for law firms and legal technology companies to build AI products and workflows around their expertise. It combines GPT‑6 Astra, our latest and most powerful model, with settings, tools, and context tailored for professional legal work.

API customers including Harvey and Legora will be able to build on Astra for Law, bringing this intelligence into their own products and workflows. As our frontier models advance, we’ll bring these legal capabilities to our latest models.

We are also expanding our work on privacy and governance to give law firms specific controls for confidential client work. Firms can also customize Astra for Law using our 26 new ecosystem plugins that connect ChatGPT to the specialist tools firms already use, like Relativity and Clio.

Frontier intelligence for law

Astra for Law combines GPT‑6 Astra with a powerful legal search index and instructions for legal analysis and writing. Together, they amplify Astra’s capabilities across the legal practice, while giving firms and legal technology companies the freedom to build their own applications and workflows.

Legal research: from facts to a supported answer

Our new legal search index is one of the tools Astra for Law can use. Legal research often begins with finding the exact right authority, locating the relevant passages, and understanding how relevant and binding they are to the situation at hand. The index helps Astra for Law do that work, and complements the licensed content and specialist products firms rely on from providers such as Thomson Reuters.

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By using the legal search index, Astra for Law can search U.S. case law, statutes, regulations, court rules, and administrative decisions across a corpus of more than 230 million URLs, with sources added daily. Our work with Free Law Project, the nonprofit behind CourtListener, brings its case-law collection covering more than 99.9% of published U.S. precedential case law⁠(opens in a new window) into this research experience.

To measure how this configuration improves legal research, we tested Astra for Law’s complete setup on 200 U.S. legal research questions from the private validation set of Vals AI’s Legal Research Bench⁠(opens in a new window). This benchmark measures how well the model can find relevant sources and passages, and how well its research answers meet the evaluation criteria.

At the highest reasoning effort for both systems, Astra for Law passed the evaluation’s overall correctness check on 54.0% of questions, compared with 38.7% for GPT‑6 Astra using web search alone – a 40% relative improvement. Astra for Law also produces more comprehensive answers.

On case-law-focused questions, Astra for Law found 24% more reference cases than GPT‑6 Astra using web search alone at the highest reasoning effort. On the audited set of target passages, it retrieved up to 54% more relevant passages from the correct court opinions, when comparing the systems at the same reasoning effort.

The result is a stronger research foundation for advising on a deal, assessing a dispute, or developing a legal strategy, with reliable authorities the lawyer can examine for herself.

Firms can build with their own teams and partner products, with permitted sources and review processes defined for the work.

Frontier intelligence, connected to the most trusted tools in legal

We’re proud to work with the specialist companies who are advancing legal AI. Today, we’re launching 26 partner-built plugins⁠ that help firms go deeper with the tools and knowledge they already use. These plugins cover the practice and business of law. With iManage, a lawyer can draft a negotiation brief in ChatGPT and save it to the matter file; Intapp can surface activities that may need a time entry for review; DeepJudge can bring prior deals into a comparison. Thomson Reuters is bringing HighQ matter context into ChatGPT and previewing a forthcoming CoCounsel Legal connector.

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“As AI becomes more open and interoperable, the value is not in connectivity alone. Legal professionals need more than access to information. They need trusted intelligence, relevant enterprise and matter context, purpose built legal capabilities, and the governance required for high stakes work. That is what Thomson Reuters delivers through HighQ and CoCounsel Legal. CoCounsel remains the trusted professional AI system designed to help complete that work. Our work with OpenAI helps make these capabilities available in the environments customers choose, while preserving the accuracy, confidentiality, and accountability they depend on.”
Joel Hron, Chief Technology Officer, Thomson Reuters

The launch includes 9 community plugins from lawyers and legal engineers at LegalQuants, LECG, and Skills.law, with 47 custom skills that practitioners can adapt, extend, or draw inspiration from to do their work in ChatGPT. Community plugins give the people closest to the work a way to keep setting the standard for what these skills can do. We’re also making ChatGPT for Word generally available today, so lawyers can proofread, get suggested edits, and flag formatting issues in the tool they already rely on for drafting.

Our approach is open and composable: firms can use specialist products, bring their own tools and knowledge, and adapt community-built skills to their practice. Partners can keep developing their own applications and workflows, while firms choose how those capabilities fit together. Building on OpenAI should mean getting more from the ecosystem, not replacing it.

Build with us

OpenAI is investing in law for the long term. We’ll keep advancing Astra for Law’s model, settings, tools, and instructions together, guided by rigorous evaluations and feedback from lawyers and legal technology partners. We’ll also keep improving ChatGPT so firms can build around their expertise and connect the tools they use.

Our work with Wachtell, Lipton, Rosen & Katz brings the firm’s litigation and corporate expertise together with our frontier research and engineering to explore how AI can support the work involved in providing sophisticated legal judgment.

“We’ve appreciated the technical depth and willingness to listen that OpenAI’s forward deployed engineering team has brought to our conversations about AI's role in supporting legal work, and are excited about the possibilities of AI to shape the next era of legal practice.”
Wachtell, Lipton, Rosen & Katz

The most ambitious applications will come from the people who practice law and the companies building alongside them. We’re committed to working with this ecosystem so firms can bring their own expertise, standards, and judgment to AI—and serve clients in ways only they can.

To explore early access to Astra for Law, build it into your product, or develop tools around your firm’s expertise, contact OpenAI.

Author

Given the same prompt, Astra for Law returned two closely matching precedents; in the litigation example, Claude Fable 5.1 returned a holding that had been reversed on appeal, while in the transactional example it reported finding no such case.

Originally published on September 17, 2026 by OpenAI .

Expert Analysis for Orange County Businesses

How this impacts SMBs in Southern California

Tech News Roundup: OpenAI has unveiled Astra for Law, an advanced AI foundation designed specifically for law firms, integrating powerful legal research tools and customizable workflows to enhance legal practice efficiency and confidentiality.

For small and medium-sized businesses (SMBs) in Orange County, the introduction of Astra for Law highlights a significant shift towards leveraging AI for enhanced operational efficiency. As legal processes become more streamlined and data-driven, local firms will need to adapt to these innovations to remain competitive. The ability to efficiently conduct legal research and manage client data with higher accuracy can save valuable time and resources, ultimately benefiting SMBs that rely on legal services for contracts, compliance, and other business operations.

At The Network Company, we understand the importance of integrating cutting-edge technology into your business processes. Our managed IT services can help local law firms implement AI-driven solutions like Astra for Law while ensuring data security and compliance with legal standards. Additionally, our cybersecurity solutions safeguard sensitive client information, allowing firms to confidently adopt new technologies. For businesses looking to protect critical data, our cloud backup and BCDR services provide reliable recovery options that are essential in the event of a cybersecurity incident. Let TNC help you navigate the evolving landscape of legal technology to enhance your firm’s capabilities.

Read the full article: Original Source Link

Frequently Asked Questions

What is Astra for Law?

Astra for Law is an AI foundation designed for law firms, combining advanced AI capabilities with tools tailored for legal work.

How does it improve legal research?

It utilizes a legal search index to enhance accuracy and comprehensiveness in finding relevant legal information.

Content Quality

Last Reviewed:September 24, 2026
Fact-Checked:September 24, 2026
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Word Count:1,327 words

Article Tags

Company
Astra for Law
legal AI solutions
GPT-6 Astra
law firm technology
legal research tools
AI for legal workflows
legal tech innovations
confidential client work
ecosystem plugins for law
automated legal analysis
legal search index
AI in legal practice
O

About OpenAI

Content Author

OpenAI is a leader in artificial intelligence research and development, dedicated to creating innovative AI solutions for various industries, including law. Their expertise combines cutting-edge technology with a deep understanding of sector-specific challenges.

Expertise: Artificial intelligence, legal technology, AI model development, legal research solutions, privacy and governance in AI.

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