--- title: "Lexis+ AI vs Westlaw: Which is searched more?" description: "Is Lexis+ AI or Westlaw more popular in search? Compare estimated monthly branded-search demand and Share of Search inside the Legal research platforms set worldwide. Branded searches tell you how often people look for a brand by name or related terms. Comparing these searches across competitors helps you see how popular each brand is over time." canonical: "https://gobrandwave.com/demand/global-en/compare/lexis-plus-ai-vs-westlaw" publisher: "Brandwave" --- # Lexis+ AI vs Westlaw: Which is searched more? Is Lexis+ AI or Westlaw more popular in search? Compare estimated monthly branded-search demand and Share of Search inside the Legal research platforms set worldwide. Branded searches tell you how often people look for a brand by name or related terms. Comparing these searches across competitors helps you see how popular each brand is over time. ## Key facts - **Compared**: Lexis+ AI and Westlaw - **Competitive set**: Legal research platforms - **Market**: Global - **Month measured**: Sep 2026 - **Lexis+ AI Share of Search**: 2.3% - **Westlaw Share of Search**: 34.3% ## Is Lexis+ AI or Westlaw more popular in search? - In September 2026, Westlaw had more branded searches than Lexis+ AI among legal research platforms worldwide. Westlaw had about 246,000 branded searches, while Lexis+ AI had 16,500. Westlaw made up 34.3% of all legal research platform searches we track, and Lexis+ AI accounted for 2.3%. - Westlaw was ahead of Lexis+ AI in every measured month of the 12 months ending September 2026. - Across the 12 months ending September 2026, Lexis+ AI’s share of searches among legal research platforms worldwide moved from 2.4% to 2.3%, and its estimated monthly branded searches moved from 21K to 16.5K. - Across the 12 months ending September 2026, Westlaw’s share of searches among legal research platforms worldwide moved from 41.8% to 34.3%, and its estimated monthly branded searches moved from 368K to 246K. ## Top legal research platforms in ChatGPT and Google AI Overviews In three ChatGPT questions and two Google AI Overviews, Westlaw appeared in all five answers. Lexis+ AI was mentioned in four out of five: in all three ChatGPT answers and in one of the two Google AI Overviews. Westlaw was listed before Lexis+ AI in every answer. Brands get a higher AI rank if they are mentioned earlier in the answers that list options. | Brand | AI rank | ChatGPT answers that named it | Google AI Overviews that named it | All answers that named it | | --- | --- | --- | --- | --- | | Westlaw | 1st | 3 of 3 | 2 of 2 | 5 of 5 | | Bloomberg Law | 2nd | 3 of 3 | 2 of 2 | 5 of 5 | | Lexis+ AI | 3rd | 3 of 3 | 1 of 2 | 4 of 5 | | LexisNexis | 4th | 3 of 3 | 2 of 2 | 5 of 5 | | Fastcase | 5th | 2 of 3 | 2 of 2 | 4 of 5 | | CourtListener | 6th | 2 of 3 | 1 of 2 | 3 of 5 | | vLex | 7th | 2 of 3 | 0 of 2 | 2 of 5 | | Justia | 8th | 1 of 3 | 1 of 2 | 2 of 5 | | Casetext | 9th | 0 of 3 | 2 of 2 | 2 of 5 | ## Every AI answer about legal research platforms - Asked ChatGPT "Which legal research platform should I use?": 1. Westlaw, 2. Bloomberg Law, 3. CourtListener, 4. LexisNexis, 5. Lexis+ AI - Asked ChatGPT "What are the best legal research platforms?": 1. Westlaw, 2. Bloomberg Law, 3. CourtListener, 4. Justia, 5. vLex, 6. Fastcase, 7. LexisNexis, 8. Lexis+ AI - Asked ChatGPT "What's the best legal research platform for a law firm?": 1. Westlaw, 2. Lexis+ AI, 3. Bloomberg Law, 4. vLex, 5. Fastcase, 6. LexisNexis - Searched Google, AI Overview "legal research platforms": 1. Westlaw, 2. LexisNexis, 3. Bloomberg Law, 4. Fastcase, 5. Justia, 6. Casetext - Searched Google, AI Overview "legal research software": 1. Westlaw, 2. Lexis+ AI, 3. Bloomberg Law, 4. Fastcase, 5. Casetext, 6. CourtListener, 7. LexisNexis Brands are listed in the order each answer named them. The answers were collected in the United States on October 21, 2026. ## How did search popularity change for legal research platforms worldwide in September 2026? - In September 2026, Justia overtook Lexis+ AI and Bloomberg Law to rank 5th among legal research platforms worldwide, with 2.5% of the searches. - In September 2026, Westlaw gained share of searches among legal research platforms worldwide, from 33% to 34.3%. - Estimated monthly branded searches for Lexis+ AI worldwide fell 21.4% over 12 measured months, from 21K to 16.5K in September 2026. ## Month by month | Month | Lexis+ AI estimated searches | Lexis+ AI Share of Search | Lexis+ AI rank | Westlaw estimated searches | Westlaw Share of Search | Westlaw rank | | --- | --- | --- | --- | --- | --- | --- | | Oct 2025 | 21K | 2.4% | 5 | 368K | 41.8% | 2 | | Nov 2025 | 16.7K | 2.5% | 5 | 246K | 36.2% | 2 | | Dec 2025 | 11.5K | 2.1% | 6 | 201K | 36.5% | 2 | | Jan 2026 | 14K | 2.1% | 7 | 246K | 36.6% | 2 | | Feb 2026 | 17.2K | 2.2% | 7 | 246K | 31.5% | 2 | | Mar 2026 | 21.7K | 2.9% | 5 | 246K | 32.4% | 2 | | Apr 2026 | 19.2K | 3% | 5 | 201K | 31.6% | 2 | | May 2026 | 16.5K | 2.6% | 5 | 201K | 31.8% | 2 | | Jun 2026 | 17.5K | 2.7% | 5 | 201K | 31.3% | 2 | | Jul 2026 | 15.3K | 2.5% | 5 | 165K | 27.3% | 2 | | Aug 2026 | 15.3K | 2.5% | 5 | 201K | 33% | 2 | | Sep 2026 | 16.5K | 2.3% | 6 | 246K | 34.3% | 2 | ## How each brand is measured Brandwave collects information about searches that people make online using Lexis+ AI’s and Westlaw’s names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading. - **Lexis+ AI**: Measured on the search terms “lexis ai” and “lexis protege”, summed into one figure. - **Westlaw**: Measured on the search term “westlaw”. - [Lexis+ AI profile](/demand/global-en/brands/lexis-plus-ai) - [Westlaw profile](/demand/global-en/brands/westlaw) - [All legal research platforms worldwide](/demand/global-en/categories/legal-research-platforms): The set both shares are measured inside, 9 brands. ## Methodology - [How is the Brand Demand Index measured?](/demand/methodology): Where the figures come from, what they compare, and how they may be reused. ## Frequently asked questions ### Is Lexis+ AI or Westlaw more popular in search? In September 2026, Westlaw had more branded searches than Lexis+ AI among legal research platforms worldwide. Westlaw had about 246,000 branded searches, while Lexis+ AI had 16,500. Westlaw made up 34.3% of all legal research platform searches we track, and Lexis+ AI accounted for 2.3%. ## Cite this page Brandwave. "Lexis+ AI vs Westlaw: Which is searched more?". https://gobrandwave.com/demand/global-en/compare/lexis-plus-ai-vs-westlaw This page is also available as HTML at https://gobrandwave.com/demand/global-en/compare/lexis-plus-ai-vs-westlaw. Brandwave publishes an index of its Markdown pages at https://gobrandwave.com/llms.txt.