Legal research is one of the areas where AI is often promoted as a game-changer, promising to find and summarise legal material faster. There is genuine potential here, but also serious risks, particularly because AI can fabricate cases and citations. Understanding both sides is essential. Here is a practical look at the benefits, risks and safe use of AI tools for legal research.
Quick answer
AI tools can help with legal research by making it easier to search, sift through and summarise material. However, they also carry risks that are particularly serious in a legal context.
The main benefits are potential improvements in speed and efficiency, assistance with summarising material and support for preliminary research.
The main risks include:
- Fabricated cases and citations: AI can produce confident but false cases, citations and legal propositions, commonly described as hallucinations.
- Missing or misstating the law: AI may overlook relevant authorities, misinterpret a judgment or present an incomplete picture of the law.
- Confidentiality and data risks: Inputting confidential or client information into an AI tool can create risks that must be assessed and managed.
The essential rule is simple: use AI as a research aid, not a research source. Verify every case, citation and legal proposition against authoritative sources before relying on or citing it. Protect confidentiality and retain full professional responsibility for the accuracy of your research.
The benefits
Used carefully, AI tools may help with legal research in a few practical ways.
They can assist with searching and sifting through material, help summarise lengthy documents and support the initial stages of understanding a legal issue.
For preliminary research and document analysis, this potential efficiency can be useful. It may help reduce time spent on some routine tasks and leave more room for legal analysis and judgment.
But the benefit depends on verification. Faster research is not necessarily better research if the output is inaccurate or incomplete.
The risks (especially serious for research)
Fabricated cases and citations.
This is the critical risk. AI can produce convincing but entirely false cases, citations and legal propositions. In legal research, where the accuracy of authorities is essential, this can have serious consequences. There have been instances of lawyers relying on fabricated, AI-generated citations in court proceedings.
Never rely on an AI-provided case or citation without confirming that it exists and accurately supports the proposition for which it is being cited.
Missing or misstating the law.
AI may overlook relevant legislation, judgments or amendments. It may also misstate a legal principle, misunderstand the context of a decision or present an incomplete account of the law. Its output should not be treated as comprehensive or authoritative.
Confidentiality and data risks.
Inputting confidential client information, privileged material or sensitive case details into an AI tool may create confidentiality and data-protection risks. Understand the tool’s data practices and applicable safeguards before using it.
How to use AI research safely
The safe approach is clear: use AI as a research aid, not a research source.
Verify everything against authoritative sources. Confirm that every case, citation and legal proposition is real, current and accurately stated. Consult the relevant judgments, legislation and other authoritative primary materials.
Never rely on unverified AI-generated citations. A citation that looks convincing is not necessarily genuine or relevant.
Protect confidentiality. Do not input confidential or sensitive client information without appropriate safeguards and authorisation.
Keep professional responsibility. You remain responsible for the accuracy, completeness and quality of the research you use in your legal work.
Used with this discipline, AI can support the research process. Without it, the risks can outweigh the efficiency gained. Verification is non-negotiable. (See “AI Hallucinations in Legal Work and How to Prevent Them.”)
YLCC ACTION STEP
If you use AI for legal research, treat it strictly as an aid, not a source. Verify every case, citation and legal proposition against authoritative sources before relying on or citing it. Protect confidential information and retain full professional responsibility for your work. Enjoy the potential efficiency, but make verification an absolute rule.
If this is you
If you are excited by AI research speed: The efficiency can be useful, but only when the output is verified. Use AI to assist your research, then check every source against authoritative references.
If you have cited AI-provided cases or citations: Verify them immediately. AI can generate fabricated authorities that appear genuine, and relying on them can have serious professional consequences.
If you are unsure how to verify: Check the relevant judgment, legislation or other authority through reliable legal research databases and official sources. Do not use the same AI tool as the sole means of confirming its own output.
PLEASE DON’T DO THIS: Please do not cite or rely on AI-generated cases, citations or legal propositions without verifying that they are genuine and accurate against authoritative sources. AI can fabricate legal material confidently, and the consequences of relying on it can be serious.
Do not treat AI as an authoritative research source or input confidential client information without appropriate safeguards. Use it as a research aid, verify its output and retain full responsibility for your work.
FAQs
- Can AI tools help with legal research? Yes. They can assist with searching, sifting through and summarising material. However, their output must be verified against authoritative sources before it is relied upon.
- What is the biggest risk of AI in legal research? Fabricated cases, citations and legal propositions, commonly called hallucinations. AI can produce false authorities that appear convincing, making independent verification essential.
- How do I use AI research safely? Use AI as an aid, not a source. Verify cases, citations and legal propositions against authoritative materials, protect confidentiality and retain professional responsibility for the research.
- Can I trust AI-generated citations? Not without independent verification. Confirm that the case exists, that the citation is correct and that the judgment actually supports the proposition.
- Does AI replace legal research skills? No. AI may assist with parts of the research process, but legal analysis, source verification, judgment and professional responsibility remain with the lawyer.
