--- title: "NotebookLM vs TLDR This: Which is searched more?" description: "Is NotebookLM or TLDR This more popular in search? Compare estimated monthly branded-search demand and Share of Search inside the AI summarisation tools set worldwide. 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." canonical: "https://gobrandwave.com/demand/global-en/compare/notebooklm-vs-tldr-this" publisher: "Brandwave" --- # NotebookLM vs TLDR This: Which is searched more? Is NotebookLM or TLDR This more popular in search? Compare estimated monthly branded-search demand and Share of Search inside the AI summarisation tools set worldwide. 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. ## Key facts - **Compared**: NotebookLM and TLDR This - **Competitive set**: AI summarisation tools - **Market**: Global - **Month measured**: Sep 2026 - **NotebookLM Share of Search**: 81.9% - **TLDR This Share of Search**: <0.01% ## Is NotebookLM or TLDR This more popular in search? - In September 2026, NotebookLM had more branded searches than TLDR This among AI summarisation tools worldwide. NotebookLM had about 24.5 million branded searches, while TLDR This had 2,400. NotebookLM made up 81.9% of all AI summarisation tool searches we track, and TLDR This accounted for <0.01%. - NotebookLM was ahead of TLDR This in every measured month of the 12 months ending September 2026. - Across the 12 months ending September 2026, NotebookLM’s share of searches among AI summarisation tools worldwide moved from 54.9% to 81.9%, and its estimated monthly branded searches moved from 11.9M to 24.5M. - Across the 12 months ending September 2026, TLDR This’ share of searches among AI summarisation tools worldwide moved from 0.02% to <0.01%, and its estimated monthly branded searches moved from 5.4K to 2.4K. ## Top AI summarisation tools in ChatGPT and Google AI Overviews In three ChatGPT questions and two Google AI Overviews, NotebookLM was mentioned in three out of five: in all three ChatGPT answers, but not in either of the two Google AI Overviews. TLDR This was mentioned in two out of five: not in any of the three ChatGPT answers, but in both Google AI Overviews. TLDR This was listed before NotebookLM in two out of three answers. Brands get a higher AI rank if they are mentioned earlier in the answers that list options. | Brand | AI rank | ChatGPT answers that named it | Google AI Overviews that named it | All answers that named it | | --- | --- | --- | --- | --- | | TLDR This | 1st | 0 of 3 | 2 of 2 | 2 of 5 | | QuillBot | 2nd | 0 of 3 | 2 of 2 | 2 of 5 | | Scholarcy | 3rd | 1 of 3 | 1 of 2 | 2 of 5 | | NotebookLM | 4th | 3 of 3 | 0 of 2 | 3 of 5 | | Otter | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | ## Every AI answer about AI summarisation tools - Asked ChatGPT "Which AI summarisation tool should I use?": 1. NotebookLM - Asked ChatGPT "What are the best AI summarisation tools?": 1. NotebookLM, 2. Scholarcy - Asked ChatGPT "What's the best AI summarisation tool for summarising long documents?": 1. NotebookLM - Searched Google, AI Overview "article summariser": 1. TLDR This, 2. Scholarcy, 3. QuillBot - Searched Google, AI Overview "document summariser": 1. QuillBot, 2. TLDR This Not named in any answer: Otter. Brands are listed in the order each answer named them. The answers were collected in the United States on October 20, 2026. ## How did search popularity change for AI summarisation tools worldwide in September 2026? - In September 2026, NotebookLM gained share of searches among AI summarisation tools worldwide, from 78.7% to 81.9%. - Estimated monthly branded searches for TLDR This worldwide fell 55.6% over 12 measured months, from 5.4K to 2.4K in September 2026. ## Month by month | Month | NotebookLM estimated searches | NotebookLM Share of Search | NotebookLM rank | TLDR This estimated searches | TLDR This Share of Search | TLDR This rank | | --- | --- | --- | --- | --- | --- | --- | | Oct 2025 | 11.9M | 54.9% | 1 | 5.4K | 0.02% | 5 | | Nov 2025 | 13.8M | 58.9% | 1 | 4.4K | 0.02% | 5 | | Dec 2025 | 16.3M | 71.4% | 1 | 3.6K | 0.02% | 5 | | Jan 2026 | 19.9M | 75.1% | 1 | 3.6K | 0.01% | 5 | | Feb 2026 | 19.9M | 75.1% | 1 | 2.9K | 0.01% | 5 | | Mar 2026 | 24.5M | 75.2% | 1 | 3.6K | 0.01% | 5 | | Apr 2026 | 29.9M | 81.6% | 1 | 4.4K | 0.01% | 5 | | May 2026 | 29.9M | 81.9% | 1 | 2.9K | <0.01% | 5 | | Jun 2026 | 24.5M | 81.9% | 1 | 2.9K | <0.01% | 5 | | Jul 2026 | 19.3M | 81.2% | 1 | 1.9K | <0.01% | 5 | | Aug 2026 | 19.9M | 78.7% | 1 | 2.4K | <0.01% | 5 | | Sep 2026 | 24.5M | 81.9% | 1 | 2.4K | <0.01% | 5 | ## How each brand is measured Brandwave collects information about searches that people make online using NotebookLM’s and TLDR This’ 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. - **NotebookLM**: Measured on the search terms “notebook lm” and “notebooklm”, summed into one figure. - **TLDR This**: Measured on the search term “tldrthis”. - [NotebookLM profile](/demand/global-en/brands/notebooklm) - [TLDR This profile](/demand/global-en/brands/tldr-this) - [All AI summarisation tools worldwide](/demand/global-en/categories/ai-summarisation-tools): The set both shares are measured inside, 5 brands. ## Methodology - [How is the Brand Demand Index measured?](/demand/methodology): Where the figures come from, what they compare, and how they may be reused. ## Frequently asked questions ### Is NotebookLM or TLDR This more popular in search? In September 2026, NotebookLM had more branded searches than TLDR This among AI summarisation tools worldwide. NotebookLM had about 24.5 million branded searches, while TLDR This had 2,400. NotebookLM made up 81.9% of all AI summarisation tool searches we track, and TLDR This accounted for <0.01%. ## Cite this page Brandwave. "NotebookLM vs TLDR This: Which is searched more?". https://gobrandwave.com/demand/global-en/compare/notebooklm-vs-tldr-this This page is also available as HTML at https://gobrandwave.com/demand/global-en/compare/notebooklm-vs-tldr-this. Brandwave publishes an index of its Markdown pages at https://gobrandwave.com/llms.txt.