When a consumer sector company needed to review more than 80,000 documents to support its defense in a complex commercial dispute, it turned to Kroll’s Discovery Solutions Team. By leveraging next-generation artificial intelligence (AI) through Relativity aiR for Review, Kroll turned a potentially time-intensive first-level review into a targeted, efficient and defensible workflow, allowing the client’s legal teams to quickly surface the evidence that mattered most and achieve significant time and cost savings.
Cyber
May 5, 2026
Combining AI with Deep Discovery Expertise to Enhance Legal Defensibility
Overview
Industry
- Consumer products
Challenges
- Active legal dispute
- High volume of documents
- Strict time constraints
Kroll Services
- Discovery and Analytics Solutions
Impact
- Enhanced legal defensibility
- Structured technology and expert deployment process
- More than 90% reduction in documents requiring full manual review
- Significant time and cost savings
The Challenge
Facing legal action relating to the alleged misuse of brand and technology assets, as well as disputes over contractual payments, a consumer sector company operating across several states was under pressure to identify relevant communications and documents to support its claims within strict time constraints. The organization needed to identify relevant documents as quickly as possible without compromising precision, sacrificing defensibility or having to deploy more resource‑intensive traditional analytics.
The company had a large and diverse email dataset of about 80,000 documents requiring initial scrutiny—too many for human review alone. An initial attempt at manually coding 22,000 documents demonstrated that manual first‑level review would be time‑consuming, costly and difficult to scale. Needing to achieve a balance of precision and pace, the client was keen to identify a way to prioritize and reduce the document universe, with a view to using AI to perform full first‑pass review with expert-led quality control.
Kroll’s Solution
With efficient and accurate document analysis critical to the company’s legal action, Kroll Discovery Solutions recognized that its client’s complex challenges could be addressed by deploying Relativity aiR for Review as an AI‑powered first‑pass review engine, supported by expert prompt development, testing and validation.
As a Relativity Gold Provider Partner with more than 40 Relativity certifications and over 18 Relativity Generative AI Pro-certified individuals on the Discovery & Analytics Solutions Team, Kroll is ideally positioned to maximize the impact of Relativity aiR for Review.
Moving fast, Kroll undertook prompt development, ingesting matter materials— including the Statement of Claim—and using aiR’s prompt kickstarter (draft with AI) feature to generate initial prompts. After this, Kroll worked with the client to refine prompts with client‑provided terms, entities and contextual criteria.
Kroll then conducted live workshops with the client to review conflict and borderline documents, tuning prompts in real time for accuracy and consistency. This was followed by leveraging stratified samples to ensure representation across clusters and topic areas for prompt testing.
The critical stage involved defensibility validation, during which a statistically valid sample, designed to achieve a 99% confidence level with a ±5% margin of error, was used to assess the tool’s performance against defined criteria. Building on this foundation, Kroll conducted an error matrix‑based performance assessment, followed by targeted re‑review of conflict documents, to confirm accuracy and coding consistency.
The Benefits
Enhanced Legal Defensibility
By combining Relativity aiR for Review’s advanced integrated generative AI with deep discovery expertise, Kroll’s Discovery Solutions specialists ensured accelerated document review and insight without compromising data precision, strengthening the company’s position in a complex legal dispute.Streamlined Review Process
In leveraging aiR for Review, Kroll turned what would have been a time-intensive first-level review into a targeted, efficient and defensible workflow, with AI decisions validated against statistically significant human-coded samples. This allowed the client’s legal teams to quickly surface key evidence.Substantial Time Savings
Kroll deployed aiR for Review to deliver substantial time and cost savings by minimizing manual document review hours and improving consistency and visibility into coding decisions. After validation, aiR for Review demonstrated 94.4% recall, capturing nearly all relevant material. The required human review set was reduced to around 3,500 documents, of which around 1,000 were expected to be relevant. This led to a more than 90% reduction in documents requiring full manual review, dramatically accelerating timelines and enabling counsel to focus on the most relevant evidence early in the process.Reduced Business Costs
With substantially faster review timescales enabling counsel to focus on the most relevant evidence early, Kroll’s client benefited from cost savings proportional to the reduction of tens of thousands of manual review hours.
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