Kira vs Luminance:Which is more popular?
In September 2026, Luminance had more branded searches than Kira among contract review platforms worldwide. Luminance had about 1,740 branded searches, while Kira had 880. Luminance made up 0.82% of all contract review platform searches we track, and Kira accounted for 0.41%. When we asked ChatGPT and Google AI Overviews about contract review platforms, Luminance appeared in three of the five answers and Kira in two. Luminance was mentioned before Kira in three out of four answers that named either.
Who do people search for more?
Luminance, about 2 searches for every 1 for Kira
Who does AI mention more?
Luminance, mentioned in 3 of 5 answers, Kira in 2
Who does AI recommend more?
Luminance, named ahead of Kira 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. Kira 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 Kira 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 Kira or Luminance more popular in search?
This chart shows how often people search Google for Kira 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 Luminance, Kira. 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 Kira and Luminance comparison changed over the last 12 months?
3 findings
- Luminance was ahead of Kira in every measured month of the 12 months ending September 2026.
- Across the 12 months ending September 2026, Kira’s share of searches among contract review platforms worldwide moved from 0.97% to 0.41%, and its estimated monthly branded searches moved from 1.6K to 880.
- 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
How are branded searches counted?
3 search terms
Brandwave collects information about searches that people make online using Kira’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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