Harvey vs Luminance:Which is more popular?
In September 2026, Harvey had more branded searches than Luminance among contract review platforms worldwide. Harvey had about 135,000 branded searches, while Luminance had 1,740. Harvey made up 63.3% of all contract review platform searches we track, and Luminance accounted for 0.82%. When we asked ChatGPT and Google AI Overviews about contract review platforms, Luminance appeared in three of the five answers and Harvey in two. Luminance was mentioned before Harvey in three out of four answers that named either.
Who do people search for more?
Harvey, about 78 searches for every 1 for Luminance
Who does AI mention more?
Luminance, mentioned in 3 of 5 answers, Harvey in 2
Who does AI recommend more?
Luminance, named ahead of Harvey in 3 of 4 answers
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Top contract review platforms in ChatGPT and Google AI Overviews
In three ChatGPT questions and two Google AI Overviews, Luminance was mentioned in three out of five: in all three ChatGPT answers, but not in either of the two Google AI Overviews. Harvey was mentioned in two out of five: in one of the three ChatGPT answers and in one of the two Google AI Overviews. Luminance was listed before Harvey in three out of four answers that named either.
Most recommended by AI
Brands get a higher ranking if they are mentioned earlier in the answers.
Mentioned by AI
Each dot is one answer, filled in when that answer mentions the brand.
LegalOn5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
Spellbook5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
Ironclad5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers- Luminance3 of 5Named in 3 of 3 ChatGPT answersNamed in 0 of 2 Google answers
Juro3 of 5Named in 3 of 3 ChatGPT answersNamed in 0 of 2 Google answers- Harvey2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
Kira2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
LawGeex0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
LexCheck0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
See every answer about contract review platforms
5 answers
Asked ChatGPT
“Which contract review platform should I use?”
Asked ChatGPT
“What are the best contract review platforms?”
Asked ChatGPT
“What's the best contract review platform for legal teams?”
Searched Google, AI Overview
“contract review software”
Searched Google, AI Overview
“ai contract review”
Brands are shown in the order each answer named them. The survey took place in the United States on October 20, 2026.
Is Harvey or Luminance more popular in search?
This chart shows how often people search Google for Harvey and Luminance by name. Each line represents a brand's share of searches for all ten contract review platforms we track, month by month, from English-language searches worldwide.
Share of searches by month for Harvey, Luminance. The figures are in the table below the chart.
View monthly share of searches table
| Month | Harvey | LegalOn | Spellbook | Ironclad | Luminance | Kira | LawGeex | Juro | LexCheck |
|---|---|---|---|---|---|---|---|---|---|
| Oct 2025 | 44.7% | 36.6% | 13.4% | 1.4% | 1.6% | 0.97% | 0.97% | 0.24% | 0.24% |
| Nov 2025 | 44.6% | 36.5% | 13.3% | 1.6% | 1.5% | 1.2% | 0.96% | 0.24% | 0.19% |
| Dec 2025 | 44.8% | 36.7% | 13.4% | 1.5% | 1.3% | 0.74% | 1.2% | 0.21% | 0.16% |
| Jan 2026 | 39.9% | 39.9% | 14.6% | 1.8% | 1.7% | 0.86% | 0.86% | 0.23% | 0.17% |
| Feb 2026 | 52.9% | 29% | 13% | 1.7% | 1.5% | 0.76% | 0.76% | 0.18% | 0.15% |
| Mar 2026 | 53.2% | 29.2% | 13.1% | 1.4% | 1.3% | 0.77% | 0.63% | 0.23% | 0.1% |
| Apr 2026 | 58% | 26.1% | 11.7% | 1.3% | 1.4% | 0.69% | 0.53% | 0.2% | 0.09% |
| May 2026 | 57.8% | 26% | 11.7% | 1.8% | 1.4% | 0.68% | 0.46% | 0.16% | 0.07% |
| Jun 2026 | 59.5% | 26.8% | 9.8% | 1.8% | 0.96% | 0.48% | 0.48% | 0.17% | 0.08% |
| Jul 2026 | 59.5% | 26.8% | 9.8% | 1.9% | 0.93% | 0.48% | 0.48% | 0.12% | 0.06% |
| Aug 2026 | 59.7% | 26.9% | 9.8% | 1.9% | 0.75% | 0.39% | 0.32% | 0.14% | 0.05% |
| Sep 2026 | 63.3% | 23.2% | 10.4% | 1.5% | 0.82% | 0.41% | 0.28% | 0.1% | 0.05% |
How has the Harvey and Luminance comparison changed over the last 12 months?
3 findings
- Harvey was ahead of Luminance in every measured month of the 12 months ending September 2026.
- Across the 12 months ending September 2026, Harvey’s share of searches among contract review platforms worldwide moved from 44.7% to 63.3%, and its estimated monthly branded searches moved from 74K to 135K.
- Across the 12 months ending September 2026, Luminance’s share of searches among contract review platforms worldwide moved from 1.6% to 0.82%, and its estimated monthly branded searches moved from 2.6K to 1.7K.
How did search popularity change for contract review platforms worldwide in September 2026?
2 changes
In September 2026, Harvey gained share of searches among contract review platforms worldwide, from 59.7% to 63.3%.
Estimated monthly branded searches for Luminance worldwide fell 32.3% over 12 measured months, from 2.6K to 1.7K in September 2026.
How are branded searches counted?
3 search terms
Brandwave collects information about searches that people make online using Harvey’s and Luminance’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 contract review platforms
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