Harvey vs Spellbook:Which is searched more?
In September 2026, Harvey had more branded searches than Spellbook among AI legal assistants worldwide. Harvey had about 135,000 branded searches, while Spellbook had 22,200. Harvey made up 52.8% of all AI legal assistant searches we track, and Spellbook accounted for 8.7%. These are worldwide searches for English-language branded terms.
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Is Harvey or Spellbook more popular in search?
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 searches by month for Harvey, Spellbook. The figures are in the table below the chart.
View monthly share of searches table
| Month | Harvey | LegalOn | Spellbook | CoCounsel | Lexis+ AI | DoNotPay | Robin AI |
|---|---|---|---|---|---|---|---|
| Oct 2025 | 34.9% | 28.5% | 10.5% | 6% | 9.9% | 3.8% | 6.5% |
| Nov 2025 | 33.8% | 27.7% | 10.1% | 7.3% | 9.3% | 4.5% | 7.3% |
| Dec 2025 | 36.5% | 29.9% | 10.9% | 6.5% | 6.9% | 4% | 5.3% |
| Jan 2026 | 32.9% | 32.9% | 12.1% | 7.1% | 7.6% | 3.6% | 3.9% |
| Feb 2026 | 42.8% | 23.4% | 10.5% | 7.6% | 8.1% | 4.7% | 2.8% |
| Mar 2026 | 43.6% | 24% | 10.7% | 7.6% | 8.6% | 3.2% | 2.3% |
| Apr 2026 | 47.3% | 21.3% | 9.6% | 6.8% | 8.3% | 4.3% | 2.5% |
| May 2026 | 47.7% | 21.5% | 9.6% | 7.2% | 7.2% | 4.3% | 2.5% |
| Jun 2026 | 48.9% | 22% | 8% | 7.2% | 7.8% | 3.6% | 2.5% |
| Jul 2026 | 49.6% | 22.3% | 8.2% | 7.3% | 6.9% | 3.7% | 2.1% |
| Aug 2026 | 49.7% | 22.4% | 8.2% | 7.4% | 6.9% | 3.7% | 1.7% |
| Sep 2026 | 52.8% | 19.4% | 8.7% | 7.7% | 6.5% | 3.2% | 1.8% |
How has the Harvey and Spellbook comparison changed over the last 12 months?
3 findings
- Harvey was ahead of Spellbook 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, Spellbook’s share of searches among AI legal assistants worldwide moved from 10.5% to 8.7%, and its estimated monthly branded searches held steady at 22.2K.
How did search popularity change for AI legal assistants worldwide in September 2026?
2 changes
In September 2026, Harvey gained share of searches among AI legal assistants worldwide, from 49.7% to 52.8%.
In September 2026, Spellbook gained share of searches among AI legal assistants worldwide, from 8.2% to 8.7%.
How are branded searches counted?
2 search terms
Brandwave collects information about searches that people make online using Harvey’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.
Other head-to-heads among AI legal assistants
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