Brandwave

How popular isWestlaw?

In September 2026, people searched for Westlaw by name about 201,000 times in the United States, about the same as the previous year. These searches made up 83.6% of all United States court records platform searches, placing Westlaw first out of six platforms. When we asked both ChatGPT and Google AI Overviews about court records platforms, Westlaw appeared in four of the five answers and was the third most recommended of the six.

Search and AI answers in September 2026

Westlaw is the most searched of 6 competitors and the third most recommended in AI answers.

  1. WestlawShare of searches 83.6%Mentioned in 4 of 5 AI answersPlace in AI recommendations 3rd
  2. CourtListenerShare of searches 7.5%Mentioned in 4 of 5 AI answersPlace in AI recommendations 2nd
  3. PACERShare of searches 3.3%Mentioned in 5 of 5 AI answersPlace in AI recommendations 1st
  4. TrellisShare of searches 2.2%Mentioned in 1 of 5 AI answersPlace in AI recommendations 5th
  5. UniCourtShare of searches 1.8%Mentioned in 2 of 5 AI answersPlace in AI recommendations 4th

+1 more

Westlaw website (opens in a new tab)

Follow Westlaw and get free monthly updates on what changed

By continuing you'll get index updates and occasional product news from Brandwave. Unsubscribe any time. Privacy

Top court records platforms in ChatGPT and Google AI Overviews

In three ChatGPT questions and two Google AI Overviews, Westlaw was mentioned in four out of five: in all three ChatGPT answers and in one of the two Google AI Overviews. Westlaw is the third most recommended of the six.

Most recommended by AI

Brands get a higher ranking if they are mentioned earlier in the answers.

  1. PACER1st
  2. CourtListener2nd
  3. Westlaw3rd
  4. UniCourt4th
  5. Trellis5th
  6. Lex Machina–

Mentioned by AI

Each dot is one answer, filled in when that answer mentions the brand.

  • PACER5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Westlaw4 of 5Named in 3 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • CourtListener4 of 5Named in 3 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • UniCourt2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Trellis1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Lex Machina0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers

See every answer about court records platforms

5 answers

Not named in any answer:

Brands are shown in the order each answer named them. The survey took place in United States on October 19, 2026.

Which court records platforms compete with Westlaw?

Westlaw against court records platforms in the United States, by month

Share of searches by month for Westlaw, CourtListener, PACER, Trellis. The figures are in the table below the chart.

View monthly share of searches table
MonthWestlawCourtListenerPACERTrellisUniCourtLex Machina
Oct 202582%4.9%5.7%3.3%2.2%1.8%
Nov 202565.4%5.9%20.4%3.9%2.6%1.7%
Dec 202565.5%7.2%17.1%4.8%3.2%2.1%
Jan 202671%6.4%14.9%3.5%2.3%1.9%
Feb 202675.3%8.3%9%3%2.5%2%
Mar 202668.3%9.2%12%5%3.3%2.2%
Apr 202668.7%7.5%14.6%4.1%2.7%2.2%
May 202669.4%11.4%8.4%5.1%3.4%2.3%
Jun 202676.5%10.3%4%3.7%3.1%2.5%
Jul 202675.3%10.1%3.4%4.5%3.7%3%
Aug 202679%8.7%3.9%3.2%3.2%2.1%
Sep 202683.6%7.5%3.3%2.2%1.8%1.5%

  1. 1.Westlaw

    83.6%

    Held 1st. 201K estimated branded searches, +48.9% vs prior month. Share +4.6 points.

  2. 2.CourtListener

    7.5%

    Held 2nd. 18.1K estimated branded searches, +22.3% vs prior month. Share -1.1 points.

  3. 3.PACER

    3.3%

    Held 3rd. 7.9K estimated branded searches, +17.9% vs prior month. Share -0.6 points.

  4. 4.Trellis

    2.2%

    Held 4th. 5.4K estimated branded searches, 0% vs prior month. Share -0.9 points.

  5. 5.UniCourt

    1.8%

    Held 5th. 4.4K estimated branded searches, -18.5% vs prior month. Share -1.3 points.

  6. 6.Lex Machina

    1.5%

    Held 6th. 3.6K estimated branded searches, 0% vs prior month. Share -0.6 points.

Compare popularity between Westlaw and its closest rivals

Every comparison with Westlaw

5 comparisons

How has branded search demand for Westlaw changed in the United States over the last 12 months?

3 findings
  • Across the 12 months ending September 2026, estimated monthly branded searches for Westlaw in the United States held steady at 201K.
  • Across the 12 months ending September 2026, Westlaw’s share of searches among court records platforms in the United States increased from 82% to 83.6%.
  • Across the 12 months ending September 2026, Westlaw’s share of searches among court records platforms in the United States peaked at 83.6% in September 2026 and was lowest at 65.4% in November 2025.

How did search popularity change for United States court records platforms in September 2026?

6 changes

  1. In September 2026, Westlaw gained share of searches among court records platforms in the United States, from 79% to 83.6%.

  2. In September 2026, UniCourt lost share of searches among court records platforms in the United States, from 3.2% to 1.8%.

  3. In September 2026, CourtListener lost share of searches among court records platforms in the United States, from 8.7% to 7.5%.

  4. In September 2026, Trellis lost share of searches among court records platforms in the United States, from 3.2% to 2.2%.

  5. In September 2026, PACER lost share of searches among court records platforms in the United States, from 3.9% to 3.3%.

  6. In September 2026, Lex Machina lost share of searches among court records platforms in the United States, from 2.1% to 1.5%.

How are Westlaw’s branded searches counted?

1 search term

Brandwave collects information about searches that people make online using Westlaw’s name. When viewed over time, estimated search volumes for this branded term can be used to understand whether interest in the brand is growing, holding steady, or fading.

  • westlaw

Do you work for Westlaw? To request corrections or removal please contact us via our support page and we will be happy to assist.

How the Brand Demand Index is measured

Creator with pink hair and a pink jacket

Is Westlaw your brand?

Put your own campaigns, spend and outcomes next to this demand line, so you can see which of your marketing lined up with the movements above.

Start free