--- title: "C4 vs Celsius: Which is searched more in the United States?" description: "Is C4 or Celsius more popular in search? Compare estimated monthly branded-search demand and Share of Search inside the Energy drink brands set in the United States. 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/us/compare/c4-vs-celsius" publisher: "Brandwave" --- # C4 vs Celsius: Which is searched more in the United States? Is C4 or Celsius more popular in search? Compare estimated monthly branded-search demand and Share of Search inside the Energy drink brands set in the United States. 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**: C4 and Celsius - **Competitive set**: Energy drink brands - **Market**: United States - **Month measured**: Sep 2026 - **C4 Share of Search**: 1.6% - **Celsius Share of Search**: 19.9% ## Is C4 or Celsius more popular in search? - In September 2026, Celsius had more branded searches than C4 among energy drink brands in the United States. Celsius had about 185,000 branded searches, while C4 had 14,800. Celsius made up 19.9% of all energy drink brand searches we track, and C4 accounted for 1.6%. - Celsius was ahead of C4 in every measured month of the 12 months ending September 2026. - Across the 12 months ending September 2026, C4’s share of searches among energy drink brands in the United States moved from 1.4% to 1.6%, and its estimated monthly branded searches moved from 12.1K to 14.8K. - Across the 12 months ending September 2026, Celsius’ share of searches among energy drink brands in the United States moved from 28.5% to 19.9%, and its estimated monthly branded searches moved from 256K to 185K. ## Top energy drink brands in ChatGPT and Google AI Overviews In three ChatGPT questions and two Google AI Overviews, Celsius appeared in all five answers. C4 was mentioned in three out of five: in one of the three ChatGPT answers and in both Google AI Overviews. Celsius was listed before C4 in every answer. 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 | | --- | --- | --- | --- | --- | | Red Bull | 1st | 3 of 3 | 2 of 2 | 5 of 5 | | Celsius | 2nd | 3 of 3 | 2 of 2 | 5 of 5 | | Monster Energy | 3rd | 1 of 3 | 1 of 2 | 2 of 5 | | Ghost | 4th | 1 of 3 | 2 of 2 | 3 of 5 | | C4 | 5th | 1 of 3 | 2 of 2 | 3 of 5 | | Alani Nu | 6th | 1 of 3 | 2 of 2 | 3 of 5 | | NOS | 7th | 0 of 3 | 1 of 2 | 1 of 5 | | Reign | 8th | 1 of 3 | 0 of 2 | 1 of 5 | | Rockstar | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | | Bang | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | | Bucked Up | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | | ZOA | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | ## Every AI answer about energy drink brands - Asked ChatGPT "Which energy drink should I buy?": 1. Red Bull, 2. Celsius - Asked ChatGPT "What are the best energy drink brands?": 1. Red Bull, 2. Celsius, 3. Monster Energy, 4. Ghost, 5. Alani Nu, 6. C4, 7. Reign - Asked ChatGPT "What is the healthiest energy drink?": 1. Red Bull, 2. Celsius - Searched Google, AI Overview "energy drinks": 1. Red Bull, 2. Monster Energy, 3. Celsius, 4. Ghost, 5. Alani Nu, 6. C4 - Searched Google, AI Overview "best energy drink": 1. Celsius, 2. C4, 3. Red Bull, 4. Alani Nu, 5. Ghost, 6. NOS Not named in any answer: Rockstar, Bang, Bucked Up and ZOA. Brands are listed in the order each answer named them. The answers were collected in United States on October 26, 2026. ## How did search popularity change for United States energy drink brands in September 2026? - In September 2026, Celsius lost share of searches among energy drink brands in the United States, from 22.3% to 19.9%. - Estimated monthly branded searches for C4 in the United States rose 22.3% over 12 measured months, from 12.1K to 14.8K in September 2026. ## Month by month | Month | C4 estimated searches | C4 Share of Search | C4 rank | Celsius estimated searches | Celsius Share of Search | Celsius rank | | --- | --- | --- | --- | --- | --- | --- | | Oct 2025 | 12.1K | 1.4% | 6 | 256K | 28.5% | 2 | | Nov 2025 | 9.9K | 1.1% | 7 | 226K | 26.1% | 2 | | Dec 2025 | 9.9K | 1.2% | 6 | 209K | 26% | 2 | | Jan 2026 | 12.1K | 1.2% | 7 | 226K | 21.9% | 2 | | Feb 2026 | 12.1K | 1.3% | 6 | 226K | 23.8% | 2 | | Mar 2026 | 12.1K | 1.2% | 7 | 256K | 25.5% | 2 | | Apr 2026 | 12.1K | 1.2% | 7 | 209K | 20.9% | 2 | | May 2026 | 12.1K | 1.3% | 6 | 196K | 21.2% | 2 | | Jun 2026 | 9.9K | 1.4% | 6 | 209K | 28.7% | 2 | | Jul 2026 | 9.9K | 1.5% | 6 | 209K | 31.2% | 2 | | Aug 2026 | 12.1K | 1.3% | 6 | 209K | 22.3% | 2 | | Sep 2026 | 14.8K | 1.6% | 6 | 185K | 19.9% | 2 | ## How each brand is measured Brandwave collects information about searches that people make online using C4’s and Celsius’ 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. - **C4**: Measured on the search term “c4 energy”. - **Celsius**: Measured on the search terms “celsius drink” and “celsius energy drink”, summed into one figure. - [C4 profile](/demand/us/brands/c4) - [Celsius profile](/demand/us/brands/celsius) - [All energy drink brands in the United States](/demand/us/categories/us-energy-drink-brands): The set both shares are measured inside, 12 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 C4 or Celsius more popular in search? In September 2026, Celsius had more branded searches than C4 among energy drink brands in the United States. Celsius had about 185,000 branded searches, while C4 had 14,800. Celsius made up 19.9% of all energy drink brand searches we track, and C4 accounted for 1.6%. ## Cite this page Brandwave. "C4 vs Celsius: Which is searched more in the United States?". https://gobrandwave.com/demand/us/compare/c4-vs-celsius This page is also available as HTML at https://gobrandwave.com/demand/us/compare/c4-vs-celsius. Brandwave publishes an index of its Markdown pages at https://gobrandwave.com/llms.txt.