--- title: "Harvey vs Lexis+ AI: Which is searched more?" description: "Is Harvey or Lexis+ AI more popular in search? Compare estimated monthly branded-search demand and Share of Search inside the AI legal assistants 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/harvey-vs-lexis-plus-ai" publisher: "Brandwave" --- # Harvey vs Lexis+ AI: Which is searched more? Is Harvey or Lexis+ AI more popular in search? Compare estimated monthly branded-search demand and Share of Search inside the AI legal assistants 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**: Harvey and Lexis+ AI - **Competitive set**: AI legal assistants - **Market**: Global - **Month measured**: Sep 2026 - **Harvey Share of Search**: 52.8% - **Lexis+ AI Share of Search**: 6.5% ## Is Harvey or Lexis+ AI more popular in search? - In September 2026, Harvey had more branded searches than Lexis+ AI among AI legal assistants worldwide. Harvey had about 135,000 branded searches, while Lexis+ AI had 16,500. Harvey made up 52.8% of all AI legal assistant searches we track, and Lexis+ AI accounted for 6.5%. - Harvey was ahead of Lexis+ AI in every measured month of the 12 months ending September 2026. - Across the 12 months ending September 2026, Harvey’s share of searches among AI legal assistants worldwide moved from 34.9% to 52.8%, and its estimated monthly branded searches moved from 74K to 135K. - Across the 12 months ending September 2026, Lexis+ AI’s share of searches among AI legal assistants worldwide moved from 9.9% to 6.5%, and its estimated monthly branded searches moved from 21K to 16.5K. ## Top AI legal assistants in ChatGPT and Google AI Overviews In three ChatGPT questions and two Google AI Overviews, Lexis+ AI appeared in all five answers. Harvey was mentioned in four out of five: in all three ChatGPT answers and in one of the two Google AI Overviews. Lexis+ AI was listed before Harvey in four out of five answers. 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 | | --- | --- | --- | --- | --- | | CoCounsel | 1st | 3 of 3 | 2 of 2 | 5 of 5 | | Lexis+ AI | 2nd | 3 of 3 | 2 of 2 | 5 of 5 | | Harvey | 3rd | 3 of 3 | 1 of 2 | 4 of 5 | | Spellbook | 4th | 1 of 3 | 0 of 2 | 1 of 5 | | LegalOn | 5th | 1 of 3 | 0 of 2 | 1 of 5 | | DoNotPay | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | | Robin AI | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | ## Every AI answer about AI legal assistants - Asked ChatGPT "Which AI legal assistant should I use?": 1. CoCounsel, 2. Lexis+ AI, 3. Spellbook, 4. Harvey - Asked ChatGPT "What are the best AI legal assistants?": 1. CoCounsel, 2. Harvey, 3. Lexis+ AI, 4. LegalOn - Asked ChatGPT "What's the best AI legal assistant for legal research?": 1. Lexis+ AI, 2. CoCounsel, 3. Harvey - Searched Google, AI Overview "ai legal assistant": 1. CoCounsel, 2. Lexis+ AI, 3. Harvey - Searched Google, AI Overview "legal research ai": 1. CoCounsel, 2. Lexis+ AI Not named in any answer: DoNotPay and Robin AI. Brands are listed in the order each answer named them. The answers were collected in the United States on October 20, 2026. ## How did search popularity change for AI legal assistants worldwide in September 2026? - In September 2026, Harvey gained share of searches among AI legal assistants worldwide, from 49.7% to 52.8%. - 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 | Harvey estimated searches | Harvey Share of Search | Harvey rank | Lexis+ AI estimated searches | Lexis+ AI Share of Search | Lexis+ AI rank | | --- | --- | --- | --- | --- | --- | --- | | Oct 2025 | 74K | 34.9% | 1 | 21K | 9.9% | 4 | | Nov 2025 | 60.5K | 33.8% | 1 | 16.7K | 9.3% | 4 | | Dec 2025 | 60.5K | 36.5% | 1 | 11.5K | 6.9% | 4 | | Jan 2026 | 60.5K | 32.9% | 1 | 14K | 7.6% | 4 | | Feb 2026 | 90.5K | 42.8% | 1 | 17.2K | 8.1% | 4 | | Mar 2026 | 110K | 43.6% | 1 | 21.7K | 8.6% | 4 | | Apr 2026 | 110K | 47.3% | 1 | 19.2K | 8.3% | 4 | | May 2026 | 110K | 47.7% | 1 | 16.5K | 7.2% | 5 | | Jun 2026 | 110K | 48.9% | 1 | 17.5K | 7.8% | 4 | | Jul 2026 | 110K | 49.6% | 1 | 15.3K | 6.9% | 5 | | Aug 2026 | 110K | 49.7% | 1 | 15.3K | 6.9% | 5 | | Sep 2026 | 135K | 52.8% | 1 | 16.5K | 6.5% | 5 | ## How each brand is measured Brandwave collects information about searches that people make online using Harvey’s and Lexis+ AI’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. - **Harvey**: Measured on the search term “harvey ai”. - **Lexis+ AI**: Measured on the search terms “lexis ai” and “lexis protege”, summed into one figure. - [Harvey profile](/demand/global-en/brands/harvey) - [Lexis+ AI profile](/demand/global-en/brands/lexis-plus-ai) - [All AI legal assistants worldwide](/demand/global-en/categories/ai-legal-assistants): The set both shares are measured inside, 7 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 Harvey or Lexis+ AI more popular in search? In September 2026, Harvey had more branded searches than Lexis+ AI among AI legal assistants worldwide. Harvey had about 135,000 branded searches, while Lexis+ AI had 16,500. Harvey made up 52.8% of all AI legal assistant searches we track, and Lexis+ AI accounted for 6.5%. ## Cite this page Brandwave. "Harvey vs Lexis+ AI: Which is searched more?". https://gobrandwave.com/demand/global-en/compare/harvey-vs-lexis-plus-ai This page is also available as HTML at https://gobrandwave.com/demand/global-en/compare/harvey-vs-lexis-plus-ai. Brandwave publishes an index of its Markdown pages at https://gobrandwave.com/llms.txt.