When asked for the best legal research tool, 6 AI assistants named 7 brands between them this month. Fastcase was named most often, followed by Google Scholar and Westlaw. No brand was named by every assistant that answered.
Who named whom
| Brand | ChatGPT | Perplexity | Claude | Grok | DeepSeek | Cohere | Named by |
|---|---|---|---|---|---|---|---|
| Fastcase | ✓ | ✓ | ✓ | · | ✓ | ✓ | 5 of 6 |
| Google Scholar | ✓ | · | ✓ | ✓ | ✓ | ✓ | 5 of 6 |
| Westlaw | ✓ | ✓ | ✓ | ✓ | · | ✓ | 5 of 6 |
| Casetext | ✓ | · | ✓ | · | ✓ | · | 3 of 6 |
| LexisNexis | ✓ | · | ✓ | · | · | ✓ | 3 of 6 |
| Rocket Lawyer | · | · | ✓ | ✓ | ✓ | · | 3 of 6 |
| Nolo | · | · | ✓ | ✓ | · | · | 2 of 6 |
Share of voice
What each assistant said
ChatGPT
Named 5 brands, in this order: LexisNexis, Westlaw, Casetext, Fastcase, Google Scholar.
The best legal research tool for a small business depends on several factors, such as budget, the complexity of legal matters, and specific areas of law the business deals with.
Perplexity
Named 2 brands, in this order: Westlaw, Fastcase.
For a small business, the best legal research tool is usually Lexis+ or Westlaw if you need the most comprehensive, authoritative research; if you want a more budget-friendly option, Fastcase is often a strong fit for solo and small firms.
Claude
Named 7 brands, in this order: Google Scholar, Westlaw, LexisNexis, Casetext, Fastcase, Rocket Lawyer, Nolo.
Here are some popular options to consider:
Grok
Named 4 brands, in this order: Nolo, Westlaw, Google Scholar, Rocket Lawyer.
DeepSeek
Named 4 brands, in this order: Google Scholar, Casetext, Rocket Lawyer, Fastcase.
The "best" legal research tool depends on your budget, how often you need legal information, and what you're researching.
Cohere
Named 4 brands, in this order: Google Scholar, Fastcase, Westlaw, LexisNexis.
The best legal research tool for a small business depends on your specific needs, budget, and the complexity of the legal issues you face.
The questions asked
- What is the best legal research tool for a small business?
Asked between 2026-09-26 and 2026-09-26. Not answering this month: Gemini, Mistral.
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See the GEO suiteHow this was measured
Each month we ask every assistant the same plain buyer questions, worded the way a person shopping for this kind of product would ask them, with no brand suggested in the question except where the question itself names the market leader to find alternatives to. Each assistant answers in a fresh session with no earlier conversation, so an answer reflects what the assistant says to anyone who asks, not what it was steered towards.
From each answer we keep the product and company names it recommends. A name counts only when it appears in the answer as a proper name, is not a heading such as "Best for" or "Pricing", and is confirmed by a second assistant naming it too, by a website the answer cites, or by being the market leader named in the question. Share of voice is each brand's share of all brand mentions in the category this month. Assistants that could not answer this month are listed as not answering, never counted as naming nobody.
Cite this page
https://mentionfox.com/ai-recommends/legal-research-tools