--- title: "AI legal assistants: Which brands are most popular in search?" description: "Compare the AI tools used for legal research and drafting. Share of Search among Harvey, LegalOn, Spellbook, DoNotPay and Robin AI, the AI legal assistants Brandwave compares worldwide, using the same methodology, market, and reporting period. 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/categories/ai-legal-assistants" publisher: "Brandwave" --- # AI legal assistants: Which brands are most popular in search? Compare the AI tools used for legal research and drafting. Share of Search among Harvey, LegalOn, Spellbook, DoNotPay and Robin AI, the AI legal assistants Brandwave compares worldwide, using the same methodology, market, and reporting period. 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 - **Competitive set**: AI legal assistants - **Market**: Global - **Brands compared**: 5 - **Month measured**: Aug 2026 - **Highest Share of Search**: Harvey, 57.6% ## Which brand is most popular in search among AI legal assistants worldwide? - In August 2026, Harvey was the most searched among AI legal assistants worldwide, with an estimated 110K branded searches and 57.6% estimated Share of Search within this set. - LegalOn is in 2nd place, 31.7 percentage points behind at 25.9% Share of Search. - Across the 11 months ending August 2026, Harvey’s estimated Share of Search among AI legal assistants worldwide increased from 41.4% to 57.6%. - Across the 11 months ending August 2026, LegalOn’s estimated Share of Search among AI legal assistants worldwide decreased from 33.9% to 25.9%. - Across the 11 months ending August 2026, Spellbook’s estimated Share of Search among AI legal assistants worldwide decreased from 12.4% to 9.5%. - Across the 11 months ending August 2026, Robin AI’s estimated Share of Search among AI legal assistants worldwide decreased from 6.8% to 1.9%. - Across the 11 months ending August 2026, Harvey’s estimated Share of Search among AI legal assistants worldwide peaked at 57.6% in August 2026 and was lowest at 37.9% in January 2026. - Across the 11 months ending August 2026, LegalOn’s estimated Share of Search among AI legal assistants worldwide peaked at 37.9% in January 2026 and was lowest at 24.8% in April 2026. - Across the 11 months ending August 2026, Spellbook’s estimated Share of Search among AI legal assistants worldwide peaked at 13.9% in January 2026 and was lowest at 9.4% in June 2026. - Across the 11 months ending August 2026, DoNotPay’s estimated Share of Search among AI legal assistants worldwide peaked at 6.7% in February 2026 and was lowest at 4.7% in March 2026. - Across the 11 months ending August 2026, Robin AI’s estimated Share of Search among AI legal assistants worldwide peaked at 8.1% in November 2025 and was lowest at 1.9% in August 2026. - Across the 11 months ending August 2026, DoNotPay rose from 5th to 4th among AI legal assistants worldwide. - Across the 11 months ending August 2026, Robin AI fell from 4th to 5th among AI legal assistants worldwide. ## Compare search popularity between leading brands - [Harvey vs LegalOn: compare search popularity](/demand/global-en/compare/harvey-vs-legalon): 57.6% against 25.9% Share of Search. - [Harvey vs Spellbook: compare search popularity](/demand/global-en/compare/harvey-vs-spellbook): 57.6% against 9.5% Share of Search. - [Harvey vs DoNotPay: compare search popularity](/demand/global-en/compare/donotpay-vs-harvey): 57.6% against 5.2% Share of Search. - [LegalOn vs Spellbook: compare search popularity](/demand/global-en/compare/legalon-vs-spellbook): 25.9% against 9.5% Share of Search. - [LegalOn vs DoNotPay: compare search popularity](/demand/global-en/compare/donotpay-vs-legalon): 25.9% against 5.2% Share of Search. - [Spellbook vs DoNotPay: compare search popularity](/demand/global-en/compare/donotpay-vs-spellbook): 9.5% against 5.2% Share of Search. ## How did search popularity change for AI legal assistants worldwide in August 2026? - Harvey’s estimated Share of Search among AI legal assistants worldwide has gained ground for 3 months in a row, from 55.2% to 57.6% in August 2026. - LegalOn’s estimated Share of Search among AI legal assistants worldwide has gained ground for 3 months in a row, from 24.8% to 25.9% in August 2026. - Estimated monthly branded searches for Robin AI worldwide fell 70.2% over 11 measured months, from 12.1K to 3.6K in August 2026. - Estimated monthly branded searches for Spellbook worldwide fell 18.5% over 11 measured months, from 22.2K to 18.1K in August 2026. ## Share of Search ranking | Rank | Brand | Share of Search | Estimated monthly branded searches | Change vs prior month | Owned by | | --- | --- | --- | --- | --- | --- | | 1 | Harvey | 57.6% | 110K | 0.0% | Harvey | | 2 | LegalOn | 25.9% | 49.5K | 0.0% | LegalOn | | 3 | Spellbook | 9.5% | 18.1K | 0.0% | Spellbook | | 4 | DoNotPay | 5.2% | 9.9K | 0.0% | DoNotPay | | 5 | Robin AI | 1.9% | 3.6K | -18.2% | Robin AI | ## Historical estimated branded-search demand | Month | Brand | Estimated monthly branded searches | Share of Search | Rank | | --- | --- | --- | --- | --- | | Oct 2025 | Harvey | 74K | 41.4% | 1 | | Oct 2025 | LegalOn | 60.5K | 33.9% | 2 | | Oct 2025 | Spellbook | 22.2K | 12.4% | 3 | | Oct 2025 | Robin AI | 12.1K | 6.8% | 4 | | Oct 2025 | DoNotPay | 9.9K | 5.5% | 5 | | Nov 2025 | Harvey | 60.5K | 40.3% | 1 | | Nov 2025 | LegalOn | 49.5K | 33% | 2 | | Nov 2025 | Spellbook | 18.1K | 12.1% | 3 | | Nov 2025 | Robin AI | 12.1K | 8.1% | 4 | | Nov 2025 | DoNotPay | 9.9K | 6.6% | 5 | | Dec 2025 | Harvey | 60.5K | 41.9% | 1 | | Dec 2025 | LegalOn | 49.5K | 34.3% | 2 | | Dec 2025 | Spellbook | 18.1K | 12.5% | 3 | | Dec 2025 | DoNotPay | 8.1K | 5.6% | 4 | | Dec 2025 | Robin AI | 8.1K | 5.6% | 5 | | Jan 2026 | Harvey | 60.5K | 37.9% | 1 | | Jan 2026 | LegalOn | 60.5K | 37.9% | 2 | | Jan 2026 | Spellbook | 22.2K | 13.9% | 3 | | Jan 2026 | DoNotPay | 9.9K | 6.2% | 4 | | Jan 2026 | Robin AI | 6.6K | 4.1% | 5 | | Feb 2026 | Harvey | 90.5K | 50.4% | 1 | | Feb 2026 | LegalOn | 49.5K | 27.5% | 2 | | Feb 2026 | Spellbook | 22.2K | 12.4% | 3 | | Feb 2026 | DoNotPay | 12.1K | 6.7% | 4 | | Feb 2026 | Robin AI | 5.4K | 3% | 5 | | Mar 2026 | Harvey | 110K | 51.7% | 1 | | Mar 2026 | LegalOn | 60.5K | 28.4% | 2 | | Mar 2026 | Spellbook | 27.1K | 12.7% | 3 | | Mar 2026 | DoNotPay | 9.9K | 4.7% | 4 | | Mar 2026 | Robin AI | 5.4K | 2.5% | 5 | | Apr 2026 | Harvey | 110K | 55.2% | 1 | | Apr 2026 | LegalOn | 49.5K | 24.8% | 2 | | Apr 2026 | Spellbook | 22.2K | 11.1% | 3 | | Apr 2026 | DoNotPay | 12.1K | 6.1% | 4 | | Apr 2026 | Robin AI | 5.4K | 2.7% | 5 | | May 2026 | Harvey | 110K | 55.2% | 1 | | May 2026 | LegalOn | 49.5K | 24.8% | 2 | | May 2026 | Spellbook | 22.2K | 11.1% | 3 | | May 2026 | DoNotPay | 12.1K | 6.1% | 4 | | May 2026 | Robin AI | 5.4K | 2.7% | 5 | | Jun 2026 | Harvey | 110K | 57% | 1 | | Jun 2026 | LegalOn | 49.5K | 25.7% | 2 | | Jun 2026 | Spellbook | 18.1K | 9.4% | 3 | | Jun 2026 | DoNotPay | 9.9K | 5.1% | 4 | | Jun 2026 | Robin AI | 5.4K | 2.8% | 5 | | Jul 2026 | Harvey | 110K | 57.3% | 1 | | Jul 2026 | LegalOn | 49.5K | 25.8% | 2 | | Jul 2026 | Spellbook | 18.1K | 9.4% | 3 | | Jul 2026 | DoNotPay | 9.9K | 5.2% | 4 | | Jul 2026 | Robin AI | 4.4K | 2.3% | 5 | | Aug 2026 | Harvey | 110K | 57.6% | 1 | | Aug 2026 | LegalOn | 49.5K | 25.9% | 2 | | Aug 2026 | Spellbook | 18.1K | 9.5% | 3 | | Aug 2026 | DoNotPay | 9.9K | 5.2% | 4 | | Aug 2026 | Robin AI | 3.6K | 1.9% | 5 | | Sep 2026 | DoNotPay | — | — | — | | Sep 2026 | Harvey | — | — | — | | Sep 2026 | LegalOn | — | — | — | | Sep 2026 | Robin AI | — | — | — | | Sep 2026 | Spellbook | — | — | — | ## What is being compared - **DoNotPay**: Measured on the search term “donotpay”. - **Harvey**: Measured on the search term “harvey ai”. - **LegalOn**: Measured on the search term “legalon”. - **Robin AI**: Measured on the search term “robin ai”. - **Spellbook**: Measured on the search term “spellbook”. - [DoNotPay](/demand/global-en/brands/donotpay) - [Harvey](/demand/global-en/brands/harvey) - [LegalOn](/demand/global-en/brands/legalon) - [Robin AI](/demand/global-en/brands/robin-ai) - [Spellbook](/demand/global-en/brands/spellbook) ## Methodology - [How is branded search demand measured?](/demand/methodology): Where the figures come from, what they compare, and how they may be reused. ## Frequently asked questions ### Which brand is most popular in search among AI legal assistants worldwide? In August 2026, Harvey was the most searched among AI legal assistants worldwide, with an estimated 110K branded searches and 57.6% estimated Share of Search within this set. These are worldwide searches for English-language branded terms. ## Cite this page Brandwave. "AI legal assistants: Which brands are most popular in search?". https://gobrandwave.com/demand/global-en/categories/ai-legal-assistants This page is also available as HTML at https://gobrandwave.com/demand/global-en/categories/ai-legal-assistants. Brandwave publishes an index of its Markdown pages at https://gobrandwave.com/llms.txt.