--- title: "Lexis+ AI vs Robin AI: Which is searched more?" description: "Is Lexis+ AI or Robin 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/lexis-plus-ai-vs-robin-ai" publisher: "Brandwave" --- # Lexis+ AI vs Robin AI: Which is searched more? Is Lexis+ AI or Robin 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**: Lexis+ AI and Robin AI - **Competitive set**: AI legal assistants - **Market**: Global - **Month measured**: Sep 2026 - **Lexis+ AI Share of Search**: 6.5% - **Robin AI Share of Search**: 1.8% ## Is Lexis+ AI or Robin AI more popular in search? - In September 2026, Lexis+ AI had more branded searches than Robin AI among AI legal assistants worldwide. Lexis+ AI had about 16,500 branded searches, while Robin AI had 4,720. Lexis+ AI made up 6.5% of all AI legal assistant searches we track, and Robin AI accounted for 1.8%. - Lexis+ AI was ahead of Robin 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 AI legal assistants worldwide moved from 9.9% to 6.5%, and its estimated monthly branded searches moved from 21K to 16.5K. - Across the 12 months ending September 2026, Robin AI’s share of searches among AI legal assistants worldwide moved from 6.5% to 1.8%, and its estimated monthly branded searches moved from 13.7K to 4.7K. ## 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. Robin AI did not appear in any of the 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? - Estimated monthly branded searches for Robin AI worldwide fell 65.5% over 12 measured months, from 13.7K to 4.7K in September 2026. - 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 | Robin AI estimated searches | Robin AI Share of Search | Robin AI rank | | --- | --- | --- | --- | --- | --- | --- | | Oct 2025 | 21K | 9.9% | 4 | 13.7K | 6.5% | 5 | | Nov 2025 | 16.7K | 9.3% | 4 | 13.1K | 7.3% | 5 | | Dec 2025 | 11.5K | 6.9% | 4 | 8.8K | 5.3% | 6 | | Jan 2026 | 14K | 7.6% | 4 | 7.2K | 3.9% | 6 | | Feb 2026 | 17.2K | 8.1% | 4 | 5.9K | 2.8% | 7 | | Mar 2026 | 21.7K | 8.6% | 4 | 5.8K | 2.3% | 7 | | Apr 2026 | 19.2K | 8.3% | 4 | 5.7K | 2.5% | 7 | | May 2026 | 16.5K | 7.2% | 5 | 5.7K | 2.5% | 7 | | Jun 2026 | 17.5K | 7.8% | 4 | 5.7K | 2.5% | 7 | | Jul 2026 | 15.3K | 6.9% | 5 | 4.7K | 2.1% | 7 | | Aug 2026 | 15.3K | 6.9% | 5 | 3.9K | 1.7% | 7 | | Sep 2026 | 16.5K | 6.5% | 5 | 4.7K | 1.8% | 7 | ## How each brand is measured Brandwave collects information about searches that people make online using Lexis+ AI’s and Robin 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. - **Lexis+ AI**: Measured on the search terms “lexis ai” and “lexis protege”, summed into one figure. - **Robin AI**: Measured on the search terms “robin ai” and “robinai”, summed into one figure. - [Lexis+ AI profile](/demand/global-en/brands/lexis-plus-ai) - [Robin AI profile](/demand/global-en/brands/robin-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 Lexis+ AI or Robin AI more popular in search? In September 2026, Lexis+ AI had more branded searches than Robin AI among AI legal assistants worldwide. Lexis+ AI had about 16,500 branded searches, while Robin AI had 4,720. Lexis+ AI made up 6.5% of all AI legal assistant searches we track, and Robin AI accounted for 1.8%. ## Cite this page Brandwave. "Lexis+ AI vs Robin AI: Which is searched more?". https://gobrandwave.com/demand/global-en/compare/lexis-plus-ai-vs-robin-ai This page is also available as HTML at https://gobrandwave.com/demand/global-en/compare/lexis-plus-ai-vs-robin-ai. Brandwave publishes an index of its Markdown pages at https://gobrandwave.com/llms.txt.