LegalOn vs Spellbook:Which is more popular by branded search?
In August 2026, LegalOn had more branded searches than Spellbook among AI legal assistants worldwide. LegalOn was estimated to have 49.5K branded searches compared to Spellbook’s 18.1K, and held a 25.9% Share of Search versus Spellbook’s 9.5%. These are worldwide searches for English-language branded terms.
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Which is more popular in search, LegalOn or Spellbook?
Compare the AI tools used for legal research and drafting. 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.
Share of Search by month for LegalOn, Spellbook. The figures are in the table below the chart.
View monthly share of search table
| Month | Harvey | LegalOn | Spellbook | DoNotPay | Robin AI |
|---|---|---|---|---|---|
| Oct 2025 | 41.4% | 33.9% | 12.4% | 5.5% | 6.8% |
| Nov 2025 | 40.3% | 33% | 12.1% | 6.6% | 8.1% |
| Dec 2025 | 41.9% | 34.3% | 12.5% | 5.6% | 5.6% |
| Jan 2026 | 37.9% | 37.9% | 13.9% | 6.2% | 4.1% |
| Feb 2026 | 50.4% | 27.5% | 12.4% | 6.7% | 3% |
| Mar 2026 | 51.7% | 28.4% | 12.7% | 4.7% | 2.5% |
| Apr 2026 | 55.2% | 24.8% | 11.1% | 6.1% | 2.7% |
| May 2026 | 55.2% | 24.8% | 11.1% | 6.1% | 2.7% |
| Jun 2026 | 57% | 25.7% | 9.4% | 5.1% | 2.8% |
| Jul 2026 | 57.3% | 25.8% | 9.4% | 5.2% | 2.3% |
| Aug 2026 | 57.6% | 25.9% | 9.5% | 5.2% | 1.9% |
| Sep 2026 | — | — | — | — | — |
How has the LegalOn and Spellbook comparison changed over the last 12 months?
3 findings
- LegalOn was ahead of Spellbook in every measured month of the 11 months ending August 2026.
- Across the 11 months ending August 2026, LegalOn’s estimated Share of Search among AI legal assistants worldwide moved from 33.9% to 25.9%, and its estimated monthly branded searches moved from 60.5K to 49.5K.
- Across the 11 months ending August 2026, Spellbook’s estimated Share of Search among AI legal assistants worldwide moved from 12.4% to 9.5%, and its estimated monthly branded searches moved from 22.2K to 18.1K.
How did search popularity change for AI legal assistants worldwide in August 2026?
2 changes
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 Spellbook worldwide fell 18.5% over 11 measured months, from 22.2K to 18.1K in August 2026.
How each brand is measured
Brandwave collects information about searches that people make online using LegalOn’s and Spellbook’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.
Put your own brand in this comparison
Brandwave tracks your branded demand next to the rival you actually watch, with your campaigns, spend and outcomes on the same timeline.