Robin AI vs Spellbook:Which is more popular by branded search?
In August 2026, Spellbook had more branded searches than Robin AI among AI legal assistants worldwide. Spellbook was estimated to have 18.1K branded searches compared to Robin AI’s 3.6K, and held a 9.5% Share of Search versus Robin AI’s 1.9%. These are worldwide searches for English-language branded terms.
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Which is more popular in search, Robin AI 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 Spellbook, Robin AI. 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 Robin AI and Spellbook comparison changed over the last 12 months?
3 findings
- Spellbook was ahead of Robin AI in every measured month of the 11 months ending August 2026.
- Across the 11 months ending August 2026, Robin AI’s estimated Share of Search among AI legal assistants worldwide moved from 6.8% to 1.9%, and its estimated monthly branded searches moved from 12.1K to 3.6K.
- 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
How each brand is measured
Brandwave collects information about searches that people make online using Robin AI’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.