OpenAI Expands AI into the Legal Sector with Astra for Law

OpenAI is extending the reach of artificial intelligence into the legal industry with Astra for Law, a specialized configuration of the GPT-6 Astra model designed to support law firms and legal tech companies in their research, analysis, and drafting workflows. The tool combines the underlying AI model with dedicated legal research capabilities and tools tailored to the specific practices of legal professionals.

Comprehensive Legal Research Capabilities

Astra for Law can search across more than 230 million URLs, covering case law, statutes, regulations, court rules, and U.S. administrative decisions. To ensure comprehensive coverage, OpenAI has partnered with the Free Law Project, whose database encompasses over 99.9% of published U.S. case law that serves as precedent.

The primary goal is to enable professionals to move seamlessly from initial research to in-depth case analysis. Key features include:

Identifying relevant court decisions.
Comparing the facts of a current case with those of prior precedents.
Pinpointing weaknesses or uncertainties in legal arguments.
Analyzing risks associated with specific contract clauses.

Performance Metrics

Initial results shared by OpenAI indicate a significant improvement over standard web searches. In a test comprising 200 U.S. law questions:

Astra for Law achieved a 54% accuracy rate.
GPT-6 Astra using standard web search achieved a 38.7% accuracy rate.

For questions specifically focused on case law, the tool identified 24% more relevant references. It is important to note that these results are based on an evaluation conducted by OpenAI using a private set of questions.

Customization for Law Firms

A key objective is to allow law firms to adapt the AI to their unique methodologies. For example, Sullivan & Cromwell has developed a tool in collaboration with OpenAI that utilizes the firm’s internal negotiation guidelines and contractual precedents to identify risks in new contracts and suggest necessary modifications. Other ongoing experiments focus on due diligence for mergers and acquisitions (M&A) and the preparation of initial public offerings (IPOs).

Integrations and Privacy

OpenAI is also planning integrations with tools already widely used by legal professionals. Currently, 26 plugins developed by partners allow various legal services to be integrated directly into ChatGPT. Notable integrations include:

iManage
Relativity
Clio
Intapp
DeepJudge
Thomson Reuters

Confidentiality remains a central concern for this type of usage. OpenAI states that certain law firms can access a Zero Data Retention option via its API. Additionally, data processed through ChatGPT Enterprise is not subject to human review by default.

Availability

Astra for Law is currently available to a limited number of law firms through the Trusted Access program, accessible via ChatGPT and Codex. OpenAI plans to subsequently make the tool available via its API, enabling legal tech companies to build their own products and workflows around this technology.