Legal AI evaluation

Testing whether legal AI outputs are legally sound, evidence-based and properly supported.

Jonathan Turner brings more than 25 years of litigation, evidence analysis and legal reasoning to the evaluation of AI-generated legal work.

Legal-domain evaluation
Reasoning and authority checking
Source-grounding and hallucination review
Rubrics, benchmarks and red-teaming
Long-context legal outputs
Legal reasoning QA

Testing the answer against law, evidence and source material

The central question is whether an answer is supported by the law and the source material, not simply whether it is fluently expressed.

Model-response evaluation

Assessment of competing legal answers for accuracy, quality of reasoning, support from authority, completeness and professional usefulness.

Hallucination and authority checking

Checking cited cases, legislation and legal propositions against the source material, and identifying claims that go beyond what the sources establish.

Rubrics and benchmarks

Designing and applying realistic evaluation criteria, adversarial legal scenarios and tasks that reveal weaknesses which fluent drafting may conceal.

Long-context evaluation

Testing whether outputs accurately reflect lengthy records, preserve important distinctions and avoid unsupported assumptions.

Source-grounded review

Testing an answer against the record

Legal work often turns on small but decisive distinctions between what a document states, what can properly be inferred from it and what remains unproved. Evaluation includes tracing important conclusions back to the source material, identifying omitted qualifications and testing the reasoning against the underlying record.

Legal research and drafting

Assessment of AI-assisted legal research, fact-checking, source grounding and drafting, together with concise expert feedback and red-team testing of difficult legal questions.

Professional usefulness

Review of whether outputs are appropriately qualified, sufficiently complete for the task and suitable for use within a professional legal workflow.

Related service

Legal technology & domain consultancy

Where a project extends beyond model evaluation to the design of legal tasks, workflows or products, the related consultancy service provides broader legal-domain input.

Legal Technology & Domain Consultancy

Enquiries

Professional enquiries

Contact Jonathan Turner