Product
Vladimir Bazalenko, Founder, RendixUpdated Oct 9, 2026AI competitor tracking shows which brands AI assistants name instead of yours, how often and how high, when people ask about your category.
Its main number is AI share of voice: your part of all the brand mentions in those answers. Rendix tracks it for every competitor ChatGPT, Perplexity, Gemini and Google AI Overviews name, question by question.
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ChatGPT named 281 brands in all, about 6 in a typical answer. The other 276 share the remaining 42.6 %.
Competitors
In AI answers your competitors are the brands the engines name, and the list is longer and less stable than a market map. Three things Rendix's scans of its own category show:
Your rivals in AI answers are the brands the engines name, and each engine names its own.
60.7 % of the brands named for a question on one day were named by only one of the four engines.
632 times all four engines answered the same question on the same day, 33 questions, Aug 10 to Oct 7, 2026. Brands counted once per answer, their names merged.
Source: Rendix scans of its own category
The answers name far more brands than anyone would list as competitors.
921 brands were named in answers to 36 questions about AI visibility tools in nine weeks.
Six of them held 46.1 % of all 21,761 mentions; the other 915 shared the rest. Aug 10 to Oct 7, 2026.
Source: Rendix scans of its own category
Answers name products, so one company comes back under many names.
88 names Semrush appeared under, from "Semrush AI Visibility Toolkit" to "Semrush Enterprise AIO".
1,534 names in the answers came down to 921 brands. Counted name by name, each would be a separate competitor with its own small share.
Source: Rendix scans of its own category
Method
The same questions, the same engines, every brand counted the same way on each scan.
The buyer questions you track go to ChatGPT, Perplexity, Gemini and Google AI Overviews three times a week.
Each answer's recommended brands are read in the order the answer names them, so a brand's place is where a reader first meets it.
Every name goes through one alias list, so "Otterly.AI" and "OtterlyAI" count as one brand. A brand counts once per answer, however many of its products the answer lists.
Share of voice is your mentions divided by the mentions of every brand named, times 100. Rendix also shows it against the competitors found for your brand at setup.
Next to it: your rank among every brand named, the share of answers that name you, the questions where a rival is first and you are absent, and your head-to-head record against each rival.
Stability
One answer is unstable: the brand an engine names first changed in 47.9 % of consecutive answers to the same question. Counted over hundreds of answers a week, the shares hold: the five most-named brands moved by 1.3 to 2.3 points in nine weeks.
So read share of voice over weeks and many questions. These numbers describe one category, 36 questions about AI visibility tools; another category has other leaders and other shares. Whether Rendix counts companies or their products is set per brand in Settings.
In Rendix
Share of voice is one number on the Competitors view. Around it, the brands, questions and engines it comes from.
Every brand the answers name, ranked by visibility score, with the ones rising, falling and ahead of you.
Competitors → LeaderboardEach question with its leader and your gap in points: where you are first, in the top three, named, or missing.
Competitors → PromptsEvery brand down the side, every engine across the top, the visibility score in each cell.
Competitors → MatrixOpen a rival: your score against theirs and the answers where each of you came out ahead.
A rival's drawerHow often and how high the answers name you, per engine and over time.
AI visibilityThe sources cited in the answers your rivals win.
CitationsEngines
Each engine names a different number of brands, so the same reach is a different share in each one.
| Engine | Brands per answer | Brands named in all | Leader | Leader's share |
|---|---|---|---|---|
| ChatGPT | 6 | 281 | Profound | 13.1 % |
| Perplexity | 7 | 410 | Profound | 7.9 % |
| Gemini | 10 | 562 | Profound | 8.8 % |
| AI Overviews | 5 | 309 | Semrush | 12.1 % |
Plans
Straight from the pricing table: only what ships today.
Questions
/ Updated Oct 9, 2026Need more help? team@rendix.io
Following which brands AI assistants name instead of yours, how often and how high, for the questions your buyers ask.
Rendix reads the answers ChatGPT, Perplexity, Gemini and Google AI Overviews give to your questions, lists every brand they recommend in order, merges the names one brand appears under, and reports each brand's share of voice, rank and the questions it leads.
Your brand's share of all the brand mentions AI answers make about your category: your mentions divided by the mentions of every brand named, times 100.
If the answers to your questions name brands 200 times and 20 of those mentions are yours, your share of voice is 10 %. Rendix counts each brand once per answer and merges the names one brand appears under.
Count every brand each answer names, once per answer, then divide your count by the total and multiply by 100.
Two choices change the number. The denominator: every brand named, or only the competitors you follow. The unit: mentions, or answers that name you. Rendix counts mentions, against every brand named and against the competitors found for your brand, and shows the share of answers naming you as its own number.
It depends on how many brands the answers name.
In Rendix's own category no brand held more than 13.1 % of the mentions in any engine, Aug 10 to Oct 7, 2026. ChatGPT named about six brands an answer and Gemini about ten, so the same reach is a smaller share in Gemini. Compare yourself with the leader of your own category.
Share of voice is your part of all the mentions. Visibility is how often and how high the answers name you.
Profound was named in 88.0 % of Gemini's answers and held 8.8 % of the mentions, because each answer named about ten brands. Rendix shows both: the visibility score weighs position (first place 10 points, tenth 1), share of voice counts each mention once.
Every brand the answers to your questions name.
Nobody types the list: competitors come from the answers, so you also see the rivals you did not expect. The same brand under different names is merged into one.
The phrase is used for two things.
One is using an AI assistant to research rivals' pricing, features and messaging. The other is measuring how often AI answers name each brand, which is share of voice. Rendix does the second.
Slowly, once enough answers are counted.
In Rendix's own category the weekly share of the five most-named brands moved by 1.3 to 2.3 points over nine weeks, while the brand named first changed in 47.9 % of consecutive answers to the same question. Rendix scans three times a week and keeps the history.
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