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Increase Share Of Voice In Chatgpt And Perplexity

Written by: Content & GEO Research

Fastlook Team

Posted: 8 min readUpdated:

Understanding increase share of voice in chatgpt and perplexity is the foundation for the guidance that follows. Buyers now ask ChatGPT and Perplexity which vendors to shortlist before they ever open a search engine. If your brand is not named in those answers, it is effectively absent from the consideration set. This page sets out how to measure AI share of voice across both platforms and which levers have documented results for increasing it.

Quick answer

Build a fixed prompt set of about 50 to 200 queries, run it against both engines on a schedule, and log every brand named in each answer. Divide your brand mentions by total brand mentions to get share of voice for each platform. Repeat runs because AI answers vary between sessions.
Topic
increase share of voice in chatgpt and perplexity
Last updated
Nov 13, 2026
Read time
8 min
Increase Share Of Voice In Chatgpt And Perplexity — brand illustration

Increase Share Of Voice In Chatgpt And Perplexity: key Takeaways

  • AI share of voice measures how often your brand is mentioned relative to every brand mentioned across a fixed set of tracked prompts.
  • Mention rate asks whether your brand appears at all in a given AI answer.
  • Start with a fixed set of roughly 50 to 200 prompts, as recommended by [gptagency.io's measurement guide](https://gptagency.io/en/insights/articles/measuring-and-increasing-your-share-of-voice-in-a…
  • Share of voice often differs sharply by AI engine.
  • Brands that grew their share of AI voice did so through focused content and citation work, not passive publishing. For instance, nightwatch states that most brands see movement in AI share of voice within 60 to 90 days of a focused content and citation strategy.
How it works: landing page
  1. 1
    Increase Share Of Voice In Chatgpt And Perplexity: key Takeaways
  2. 2
    What is AI share of voice and how is it calculated?
  3. 3
    Why does mention rate differ from share of voice?
  4. 4
    How do you build a prompt set and sample each platform?
  5. 5
    Why does share of voice vary across AI platforms?
  6. 6
    Which actions move AI share of voice, and how long do they take?

What is AI share of voice and how is it calculated?

AI share of voice measures how often your brand is mentioned relative to every brand mentioned across a fixed set of tracked prompts. The formula is (your brand mentions / total brand mentions across tracked prompts) x 100, as defined in Nightwatch's guide on AI share of voice. Because AI answers are non-deterministic, a single response tells you very little about your position. Instead, the calculation works best when you count mentions across repeated runs. This approach makes the result reflect frequency rather than one lucky draw. For example, a brand mentioned in 30 of 100 total brand mentions scores 30 percent. Specifically, the calculation requires three inputs:

  • A fixed set of tracked prompts
  • Repeated runs of each prompt across engines
  • A count of your brand mentions and all brand mentions

However, the score only becomes meaningful when the prompt set stays stable over time. AI share of voice is calculated as (your brand mentions / total brand mentions across tracked prompts) x 100, according to Nightwatch's guide on AI share of voice.

increase share of voice in chatgpt and perplexity — by the numbers

100,
AI share of voice is calculated as your brand mentions / total brand…

Nightwatch's guide on AI share of voice

90 days
Nightwatch states that most brands see movement in AI share of voice…
40%
A brand's share of voice often varies significantly between AI…
87.4%
AI traffic to websites grew roughly sevenfold between early 2024 and…

Why does mention rate differ from share of voice?

Mention rate asks whether your brand appears at all in a given AI answer. Share of voice asks how much of the total brand conversation belongs to you. However, these two metrics answer different questions. A brand can have a high mention rate yet a low share of voice if competitors are named just as often. Specifically, mention rate shows presence, while share of voice shows competitive position. Therefore, track both metrics together:

  • Mention rate shows whether your brand is named in answers
  • Share of voice shows how your mentions compare to competitors
  • Both metrics together reveal where you lead or trail

Keeping both metrics gives a fuller picture than either one alone. According to Nightwatch, a brand's share of voice often varies significantly between AI platforms, such as 40% in ChatGPT versus 15% in Perplexity.

How do you build a prompt set and sample each platform?

Start with a fixed set of roughly 50 to 200 prompts, as recommended by gptagency.io's measurement guide. Mix category queries, comparison queries, and buying-stage questions. Run the same set against ChatGPT, Perplexity, Gemini, and Google AI Overviews on a fixed schedule, logging every brand named in each answer. Repeat runs, then divide your mentions by total mentions for each platform separately.

PlatformWhat to log per runRepeat runs
ChatGPTBrands named, order, cited URLsMultiple per prompt
PerplexityBrands named, cited sourcesMultiple per prompt
GeminiBrands named, cited sourcesMultiple per prompt
Google AI OverviewsBrands named, linked sourcesMultiple per prompt

Repeat counts are a judgment call; the goal is a stable frequency per platform.

Why does share of voice vary across AI platforms?

Share of voice often differs sharply by AI engine. Nightwatch reports a brand at 40% share of voice in ChatGPT and 15% in Perplexity, a gap that a blended average would hide. Similarly, Ryze AI finds that overlap between brands mentioned and brands cited ranges from 64% on Google AI Overviews to 30% on Gemini.

For example, a brand can be named in an answer without being cited as a source. Therefore, report each platform on its own line. Never average them into one headline figure, because the averages conceal where your visibility is strong and where it is weak.

Which actions move AI share of voice, and how long do they take?

Brands that grew their share of AI voice did so through focused content and citation work, not passive publishing. According to Nightwatch, most brands see movement in AI share of voice within 60 to 90 days of a focused content and citation strategy. Averi documents Gruns growing its share of AI voice from 2% to 12.6% in 60 days.

Rootly, in the same report, raised its AI citation rate roughly tenfold. Specifically, these results came from deliberate work on which prompts to target and which pages to publish. However, these are single cases, so treat them as evidence of what is possible rather than a guaranteed result.

Where most teams get this wrong

Many teams make two common mistakes when measuring AI visibility. First, they track only one engine, such as ChatGPT, and assume the result applies everywhere. Second, they sample a handful of prompts once and treat that snapshot as a benchmark. Semrush's 2026 AI Visibility Index analyzed 126 million U.S. AI search prompts.

According to that index, only 36 of 1,200 studied brands appeared consistently across ChatGPT, Gemini, Google AI Mode, and Google AI Overviews every month. Consistency is the hard part. Therefore, measure visibility over time across multiple engines rather than relying on a single snapshot.

When should you stop measuring manually?

Stop measuring manually once repeat sampling exceeds what your team can sustain by hand. Manual sampling works for a small prompt set on one or two engines. However, once you track hundreds of prompts across four platforms on a recurring schedule, the logging becomes the bottleneck. Specifically, Citation Analytics in Fastlook tracks where a brand appears in AI answers across major engines with real-time reporting.

This removes the manual logging step entirely. For example, a team tracking a large prompt set weekly would spend most of its effort on recording results. Therefore, adopt dedicated tooling when repeat sampling becomes unsustainable by hand, so your team can focus on acting on the data.

Sources & further reading

Frequently asked questions

How do I track share of voice in ChatGPT and Perplexity?

Build a fixed prompt set of about 50 to 200 queries, run it against both engines on a schedule, and log every brand named in each answer. Divide your brand mentions by total brand mentions to get share of voice for each platform. Repeat runs because AI answers vary between sessions.

How do I track share of voice across ChatGPT, Perplexity, and Gemini together?

Run the same prompt set against ChatGPT, Perplexity, and Gemini, then report each engine separately. Share of voice often differs between platforms, so a combined number would hide real gaps. Ryze AI finds that mention-to-citation overlap ranges from 64% on Google AI Overviews to 30% on Gemini. Therefore, track mentions and citations separately as well. Specifically, a brand can be named in an answer without being cited as a source, and those two outcomes call for different responses.

What is the formula for AI share of voice?

AI share of voice equals your brand mentions divided by total brand mentions across tracked prompts, multiplied by 100. Nightwatch uses this definition in its guide on AI share of voice. However, the calculation alone gives only one number. Specifically, calculate it separately for each platform and each prompt cluster. This reveals where you lead or trail. For example, a strong score in one engine can mask a weak score in another.

How is AI share of voice different from mention rate?

Mention rate measures whether your brand appears in an answer at all. Share of voice measures your portion of all brand mentions in the tracked set. However, these are different measurements. A brand can have a high mention rate but a low share of voice when competitors are named just as often. Specifically, mention rate shows presence, while share of voice shows competitive position within the same prompt set.

How many prompts should I track for AI share of voice?

gptagency.io recommends a fixed set of roughly 50 to 200 prompts, asked repeatedly across systems. Because AI answers are non-deterministic, repeated runs produce a frequency rather than a single result. However, the prompt set itself must stay stable. Keeping it fixed ensures that trends reflect real change in your visibility rather than shifts in the prompts themselves.

How long does it take to increase AI share of voice?

According to Nightwatch, most brands see movement in AI share **of voice within 60 to 90 days of a focused content and citation strategy**. Averi reports that Gruns grew its AI voice from 2% to 12.6% in 60 days. However, that single case does not guarantee the same result for every brand. Specifically, the timeline depends on how focused the content and citation work is.

Why do AI answers mention my brand inconsistently?

AI answers are non-deterministic, so the same question can produce different brand mentions on different runs. They also differ across engines, which compounds the variation. **Semrush's 2026 AI Visibility Index found only 36 of 1**,200 studied brands appeared consistently across ChatGPT, Gemini, Google AI Mode, and Google AI Overviews every month. Therefore, consistent presence requires sustained measurement over time. Specifically, it also requires ongoing content and citation work rather than a one-time effort.

What actions increase citations in ChatGPT and Perplexity?

Focused content and citation work drives movement in AI visibility. This includes publishing answer-first pages that AI engines can extract and cite. Tracking which prompts cite your brand and which do not shows where to publish next. Specifically, Fastlook's Page Engine publishes AEO-optimized pages to your CMS. Meanwhile, AI Feed keeps content fresh for crawlers. Together, these steps close the gaps that tracking reveals.

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