A matter of factsFact Intelligence in modern litigation

A guide by Wexler
  1. 01
    Facts determine outcomes
  2. 02
    The factual burden in modern disputes
  3. 03
    A new category: Fact Intelligence
  4. 04
    How Fact Intelligence differs from other legal technology
  5. 05
    Why law firms need Fact Intelligence now
  6. 06
    How leading firms are using Fact Intelligence
  7. 07
    Benchmarking Fact Intelligence at your firm
  8. 08
    Wexler: the platform for Fact Intelligence
01

Facts determine outcomes

Disputes are won on facts. Establishing the facts of what happened, when it happened, and who was involved is the hardest, most time-consuming, and most expensive part of litigation.

Traditional legal technology, including most legal AI, has not solved this problem. eDiscovery reduces the size of large datasets, but it does not reveal the meaning of the evidence or explain how the facts connect. Tools for drafting and contract review add value elsewhere, but they do not give litigators a view of the factual record they need to advance or defend a case.

“The standard of proof concerns the degree of epistemic probability… The burden of proof concerns the adequacy of the evidence which forms the basis for this assessment.”
Lord Leggatt, “Black marbles, blue buses and yellow submarines” (2024)

Reviewing thousands of documents to answer these questions drives most litigation spend. Even when eDiscovery narrows the material, early case assessment still requires days of manual review by multiple associates, and reconstructing the factual story remains slow, hard to scale, and prone to error.

“Litigation is one of the most complex, high-stakes, and resource-intensive areas of law. Establishing facts requires sifting through massive case files and depositions, a slow and error-prone process that drains lawyer time and risks missed inconsistencies.”
The LegalTech Fund
02

The factual burden in modern disputes

Outcomes depend on whether the factual record is clear, coherent, and capable of being proved. Courts expect a structured factual matrix that distinguishes between noted judicial categories. 

These include:

  • Facts in issue that must be proved
  • Other probative facts that support inference
  • Primary facts that are directly observed
  • Secondary facts inferred from evidence
  • Agreed and unagreed facts that define the scope of the dispute

Litigators know this framework, but traditional tools do not support its creation. They are not designed to identify, classify, and track these categories at the scale of a modern matter.

Large disputes contain hundreds of thousands of documents and multi-year timelines. Having lawyers manually extract and map every relevant event, entity, inconsistency, and inference across this volume consumes enormous time and cost. This is inefficient for both lawyers who could be focusing on strategy, and clients who need to manage legal spend.

“Past facts must be proved to have happened on the balance of probabilities, that is, that it is more likely than not that they did happen. Predictions about future facts need only be based upon a degree of likelihood that they will happen which is sufficient to justify preventive action.”
Baroness Hale, Re S-B Children [2009] UKSC 17 at [9]

Where traditional methods come up short

Manual reconstruction of the facts leads to recurring issues. Important events sit unnoticed in long documents. Chronologies change as evidence accumulates. Conflicting accounts remain untested. Case theories are built on assumptions that prove wrong. These failures arise because conventional tools cannot deliver the entire factual record.

Early factual mastery wins cases

Disputes teams gain an advantage by mastering the facts early. Fact Intelligence enables this. It provides a complete factual foundation that supports narrative testing, instant verification of assertions, identification of contradictions, anticipation of pressure points for cross-examination, and assurance that nothing material has been overlooked.

As factual complexity increases, the value of technology that finds, structures, and verifies the record grows.

03

A new category: Fact Intelligence

“The facts in issue are those facts which as a matter of law must be proved… This is a binary exercise. Either a fact in issue happened or it did not.”
Lord Hoffman, Re B (Children) (Care Proceedings: Standard of Proof) [2008] UKHL 35

The UK courts follow a structured approach to factual analysis. At the foundational level, they apply the balance of probabilities standard to past facts. Within this framework, judges distinguish what must be proved (facts in issue) from the evidence that proves it (probative material), and separate directly observed facts from the inferences drawn from them. Leading authorities have embedded these principles throughout civil procedure.

Fact Intelligence applies this framework at machine scale. It identifies relevant events, classifies them under recognised judicial categories, tests them against the record, and links each fact to its exact source. In doing so, it makes the evidential discipline expected by the courts achievable even where the volume of material far exceeds human capacity.

Rather than requiring lawyers to reconstruct the factual narrative from thousands of documents, Fact Intelligence delivers an immediate and source-linked evidential picture. Assertions are anchored in proof, gaps in the timeline become visible, and conflicting accounts are surfaced with precision. Probative material that may influence findings on facts in issue is retained, structured, and tested even where it does not meet the standard of proof individually.

Fact Intelligence answers the core questions that decide disputes:

I would like to pay at once a tribute to the insurance company for the considerate and fair way in which they have dealt with the case. In English law no damages are awarded for grief or sorrow caused by a person's death.
There are only two cases in which the quantum of damages for nervous shock has been considered. One is Schneider v. Eisovitch [1960] 2 Q.B. 430. The other, Tregoning v. Hill, The Times, March 2, 1965.
But they do not help us here. Somehow or other the court has to draw a line between sorrow and grief for which damages are not recoverable, and nervous shock and psychiatric illness for which damages are recoverable.
What happened?
But they do not help us here. Somehow or other the court has to draw a line between sorrow and grief for which damages are not recoverable, and nervous shock and psychiatric illness for which damages are recoverable.
"It is common knowledge that there is a 'mourning period' for all of us, and that normally time dispels this. In the average person it might be a year, but in a predisposed person it can be greatly prolonged. ..."
Mrs. Hinz was not predisposed at all. She was a woman of great capacity, level-headed, hard working, happily married. She would have got over the loss of her husband in, say, a year.
When did it happen?
Mrs. Hinz was not predisposed at all. She was a woman of great capacity, level-headed, hard working, happily married. She would have got over the loss of her husband in, say, a year.
At the trial, five years after the accident, she frequently broke down when giving her evidence. She brought the children to court. They were very well turned out.
In 1966 there was a scripture rally in Trafalgar Square. A widower, Mr Honick, went to it. He was about 63.
Who was involved?
In 1966 there was a scripture rally in Trafalgar Square. A widower, Mr Honick, went to it. He was about 63.
He paid all the rates and outgoings of his house. This went on for three more years until he died on 26th October 1971.
A few months later Mr Honick had the opportunity of buying the house where he lived at 36 Queen's Road, Waltham Cross.
What contradictions are there?
A few months later Mr Honick had the opportunity of buying the house where he lived at 36 Queen's Road, Waltham Cross.
On 2nd December 1966 a contract was signed by which the owner agreed to sell the house to Mr Honick. It must be noticed that it was to Mr Honick alone.
A little later Mr Honick went to his solicitor and instructed him to have the property conveyed into the joint names of himself and Mrs Rawnsley.
What evidence is missing?
A little later Mr Honick went to his solicitor and instructed him to have the property conveyed into the joint names of himself and Mrs Rawnsley.
But although he was minded to marry Mrs Rawnsley, it is clear that she was not minded to marry him. She said -- and the judge accepted her evidence -- that he had never mentioned marriage to her and that she never contemplated marriage.
On 23rd January 1967 the conveyance was executed. It was made to both Mr Honick and Mrs Rawnsley (the purchasers) 'To hold the same unto the Purchasers in fee simple', together with this express declaration of trust:
04

How Fact Intelligence differs from other legal technology

Most legal tools are built around documents, workflows, or language generation. Fact Intelligence is built to establish what actually happened. It focuses on the facts, not the documents that contain them.

eDiscovery excels at collection and review, but it does not explain how evidence relates, what sequence of events it describes, or whether accounts conflict. It provides a compliant dataset rather than a coherent narrative.

Contract lifecycle tools manage obligations but have no conception of disputed evidence. They offer no support for adversarial fact-finding.

General-purpose generative AI provides speed but not reliability. It lacks source linkage, factual traceability, and auditability, making it unsuitable for contentious work.

Fact Intelligence begins where these tools end. After disclosure, the challenge is understanding the evidence. Fact Intelligence extracts events, entities, relationships, contradictions, and gaps, and maps them into a structured representation of what happened. Every fact is anchored to its precise source sentence. Lawyers can test assertions, verify timelines, and explore alternative accounts with confidence.

“When I started my career as a lawyer, my very first seat was in litigation. It was an eye-opening experience into how complex, expensive, and manual legal disputes can be. Searching through masses of documents and preparing huge bundles for such high-stakes disputes felt mad to me even back then. Ever since moving to the investing side, I’ve carried a personal thesis that technology would eventually reinvent the practice of law.”
Tom Wilson, Partner at Seedcamp
05

Why law firms need Fact Intelligence now

Three shifts have increased the importance of structured factual work:

Data volumes are exploding

There is a widening gap between what must be reviewed and what can realistically be understood.

Across the industry, the volume of material entering disputes is rising far faster than teams or budgets. Nearly all (93%) litigation support professionals report increasing data volumes per case, even as the number of documents used at trial stays the same.

93%
of litigation support professionals report increasing data volumes

However, the number of documents actually used at trial remains relatively stable, meaning teams spend more time processing exponentially more material for the same evidential output. 

“In big, complex disputes, just getting to the facts is really complex and very time consuming.”
Charlie Morgan, Partner in HSF Kramer’s Disputes Practice

Costs continue to rise because factual tasks dominate the work

Multiple surveys show that up to 80% of total litigation spend is tied to document-driven factual work. Early case assessment, chronologies, witness preparation, and analysing competing accounts now dominate timetables. Nearly half of corporate clients say case durations are increasing. The biggest driver is factual complexity.

80%
of total litigation spend is tied to document-driven factual work
“Evidence which is not sufficiently cogent to establish a fact on the balance of probabilities may still be relevant when the court assesses the weight of other evidence…”
Lord Hodge and Lord Hughes, R (Pearce) v Parole Board [2023] UKSC 13 at [65]

Regulation and client expectations make traceability mandatory

The EU AI Act introduced formal obligations around transparency, oversight, and explainability. Even where it does not apply directly to litigation workflows, corporate clients are already expecting external counsel to align with the same standards:

  • The ability to trace an insight back to source evidence
  • Demonstrable human oversight
  • A clear, auditable record of what was reviewed, when, and by whom

These expectations make opaque or unstructured factual workflows increasingly risky.

“Primary facts are concrete facts which can be proved by direct observation; secondary facts are abstract… proved by inference, evaluation or deduction from the surrounding evidence.”
Mostyn J, Basson v GMC [2018] EWHC 505 (Admin) at [17]

Factual mastery is becoming a competitive advantage

The firms that have a repeatable, technology-assisted factual process gain three advantages:

Trust: Clients will instruct firms who can demonstrate evidential rigour and transparent AI use.

Speed: The ability to reach factual clarity earlier compresses entire case timelines.

Margin: When the factual work is done efficiently, firms can deliver higher-value strategy and advocacy while protecting profitability under fee pressure.

The disputes market is moving toward a world where verifiable fact handling is the new baseline for credibility. Fact Intelligence gives firms a way to do this.

06

How leading firms are using Fact Intelligence

Firms using Fact Intelligence establish the factual record early in a matter. They build a complete chronology in hours, identify contradictions rapidly, and maintain a continuously updated fact base throughout the dispute.

Partners reach strategy sooner. Associates spend less time on extraction and more on analysis. Clients receive clearer evidence-based insight earlier in the case.

“There is no logical reason why failure to prove a fact to the requisite standard means it must be treated as not having happened for other purposes.”
Lord Hamblen and Lord Leggatt, Shagang Shipping v HNA [2020] UKSC 34 at [97]

Outcomes with Wexler

95% accuracy identifying relevant facts, versus 78% for human reviewers

Recall of 80-82% of relevant facts with 93% precision versus 68% lawyer benchmark

Manual factual review reduced by 75%+

Time savings of 65-85% across workflows

Up to 90% savings in large scale litigation

Early case assessment time reduced by 75%

Uploads of 250,000 documents, moving toward 1,000,000

Processing at 20,000 pages per hour

Human review volumes reduced by 60% to 80%

*Wexler benchmarking exercise coming soon. *Statistics from evaluations and benchmarking with customers
*Wexler benchmarking exercise coming soon. *Statistics from evaluations and benchmarking with customers

Clifford Chance

Clifford Chance has embedded Wexler across its global disputes practice as part of a multi-jurisdictional innovation partnership. The firm uses Fact Intelligence to establish the factual record at the outset of large, complex matters, ensuring partners and clients have a complete view of what occurred before strategy is set. 

Wexler’s ability to handle cross-border evidence sets allows teams to build coherent chronologies and test factual theories across jurisdictions that traditionally operated in silos.

Goodwin

Goodwin adopted Wexler for its US and UK litigation teams after an extended pilot that focused on accuracy and alignment with litigator expectations. 

The firm uses Fact Intelligence extensively during early case assessment to establish the factual core of large matters and detect conflicting evidence that typically emerges only after prolonged review. Chronology building has become a central workflow, giving partners a verified, structured understanding of the case at the earliest stages.

HSF Kramer (Herbert Smith Freehills Kramer)

HSF Kramer positions Fact Intelligence as the disputes-specific counterpart to its broader GenAI programme. The firm uses Wexler to build a fact-first foundation for major cases, ensuring that strategic decisions are grounded in a clear, tested, and defensible factual baseline. 

Teams use the platform to identify contradictions across documents and testimony, highlight weaknesses early, and structure case preparation around verified knowledge rather than evolving hypotheses.

Burges Salmon

Burges Salmon integrated Wexler into its Digital Enablement Programme to support litigation, investigations, and public inquiries. The firm uses Fact Intelligence to automate chronology creation and analyse large volumes of material at a scale that traditional review cannot match. The platform is particularly valuable in inquiry-style matters, where evidential volume and complexity demand a comprehensive and continuously updated factual record.

Claire Freeman, Partner in Clifford Chance's Litigation and Dispute Resolution team
“At Clifford Chance, we are committed to leveraging innovative technology to enhance the quality and efficiency of our legal services. Wexler has proven to be a valuable tool, enabling our teams to deliver even greater value to our clients. The feedback from our lawyers has been very positive, reflecting the platform’s strong functionality and practical benefits."
Charlie Morgan, Partner in HSF Kramer’s Disputes Practice
“Our ongoing collaboration with Wexler is a great example of our strategic commitment to developing innovative solutions that deliver value for our clients. We helped the Wexler team refine the platform after an early trial and with its latest enhancements, we have now deployed it across our disputes practice. Our clients and colleagues are already seeing the benefits.”
David Hobbie, Director of Knowledge & Innovation at Goodwin
“We like the accuracy and litigation-focused design of Wexler - it’s truly a product for litigators - and how effectively it supports attorney review of the analysis grounded in the case documents. Our lawyers have found it invaluable for early case assessment and thorough fact analysis, including identifying conflicting evidence. We look forward to continuing our partnership with Wexler as adoption spreads and as more fact-related features like the real-time fact-checking function are released.”
Tom Whittaker, Director, Burges Salmon
“Wexler is a powerful AI tool that is clearly designed for the types and volumes of work faced in dispute resolution. It allows us to identify relevant facts and produce useful work in a relatively short time, augmenting the work of our expert teams by providing them with additional methods to achieve their objectives.”
07

Benchmarking Fact Intelligence at your firm

Fact Intelligence moves litigation teams from reviewing documents one-by-one to maintaining a continuously verified factual record. 

You can benchmark your current position across these four maturity stages.

  • Stage 01: Document Review

    Your factual understanding depends entirely on human review. Teams search, tag, and summarise documents manually, and chronologies live in spreadsheets or Word files. Knowledge is fragmented across individuals and email chains. What the firm “knows” is fragile.

    • Documents, not facts, drive the analysis
    • Chronologies take days or weeks to assemble
    • Contradictions emerge late
    • High risk of oversight in large, complex, or multi-jurisdictional matters
  • Stage 02: Fact structuring

    You extract and organise basic facts. Chronologies are centralised, but they require heavy manual upkeep. Early case assessment improves, but most insight still relies on manual review.

    • Initial timelines exist but remain manual and labour intensive
    • Limited ability to cross-reference people, events, or issues at scale
    • Useful for ECA, but gaps persist
  • Stage 03: Fact verification

    You have moved from collecting facts to verifying them. Every fact is linked to its exact supporting source. Narrative coherence strengthens, and contradictions appear earlier.

    • Fully sourced facts with clear provenance
    • Faster identification of inconsistencies across witnesses and custodians
    • More stable case theory with fewer late surprises
    • Auditability begins to meet client and regulatory expectations
  • Stage 04: Fact intelligence

    You have continuous factual clarity. Facts, entities, timelines, and contradictions are extracted, verified, and analysed at machine scale. Lawyers oversee, interpret, and act. The factual record is a live asset, not a reconstruction exercise.

    • A defensible, real-time factual map of the case
    • Automatic surfacing of contradictions and gaps
    • Strategy built on verified facts, not assumptions
    • Time shifts from manual review to judgment and advocacy
    • Factual clarity maintained for the entire dispute lifecycle

    This is where leading firms now operate.  

    Ask yourself:

    • Do we have a complete view of every key fact, event, and contradiction in our major disputes?
    • Can we show, instantly, the exact source of any factual assertion?
    • Can we build or update a chronology in minutes rather than days?
    • Does our factual analysis rely on tools and process, not on individual memory or manual collation?
    • Do partners feel confident that nothing material has been missed?
    • Could we defend our factual process to a client, a regulator, or a court?
    • Are facts continuously updated as the case evolves?
    • Do we work from a single, verified source of truth rather than multiple partial versions?
  • If any answer is no, your firm could gain significantly by using Fact Intelligence.

    08

    Wexler: the platform for Fact Intelligence

    Litigation rewards the teams who understand the facts first and best. The challenge today is that the volume, variety, and velocity of evidence have outgrown manual methods. Traditional tools cannot deliver the factual certainty courts expect.

    Fact Intelligence changes the foundation of dispute work. It replaces fragmented review with a complete, verifiable factual record. It gives lawyers a stable base from which to build strategy, test theories, prepare cross-examination, and advise clients with confidence.

    Wexler is the Fact Intelligence platform for litigation teams. It extracts events, entities, timelines, and contradictions from large evidential sets, then ties each fact to its exact source sentence. Chronologies that previously took days are produced in minutes. Gaps in the record are exposed, and inconsistencies across documents and testimony are surfaced for examination.

    Alongside these core functions, Wexler provides real-time factual queries, entity-level analysis, and a fully auditable factual model that updates as new material is added. It supports drafting and reporting, and it can execute multi-step factual tasks through an agentic framework designed for litigation work.

    “Wexler is designed with litigation at its core. It’s a product for litigators, made by litigators, not something retrofitted to streamline a task.”
    Sarah McAtominey, Partner, Goodwin

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