Free AI Search Volatility Tracker

See how much AI search is changing — every day, across every major answer engine. Free to read. No account needed for ChatGPT & AI Overviews.

AI Volatility score

ChatGPT
Latest score
Aug 19 Aug 21 Aug 23 Aug 25 Aug 27 Aug 29 Aug 31 Sep 1 Sep 2 Sep 3 Sep 4 Sep 5 Sep 6 Sep 7 Sep 8 Sep 9 Sep 11
0 20 40 60 80 100

September 11, 2026 • Data sample: +34,000 prompts

• Flat (0 – 20): Answers barely moved. Citations are stable.
• Rippling (21 – 40): Minor reshuffling. Normal day-to-day noise.
• Choppy (41 – 60): Noticeable citation turnover. Worth a look.
• Swell (61 – 80): Major movement. Clear winners and losers today.
• Storm (81 – 100): Large-scale rewrite. Likely a model or index update.

Unlock the full Pulse

Buy any Surfer plan to read volatility for Perplexity, Google AI Mode, and Gemini, break every engine down by industry, and track the last 90 days of movement.

Visibility Score

A single number for how present your brand is across every AI engine, tracked daily.

Mention rate & average position

How often you’re cited, and where you land inside the answer.

Share of voice

Your AI visibility against named competitors, side by side.

Cited prompts & sources

The exact prompts you appear in, and the URLs the models actually pull from.

Coverage gaps

The prompts and facts where competitors get cited and you don’t, with a clear path to close them.

Brands optimizing with Surfer are 2x more likely to be cited in AI answers and have seen up to +423% more AI visibility.

Frequently Asked Questions

What is Surfer Pulse?
Surfer Pulse is a free tool that measures daily volatility in AI search. It tracks how much the sources cited by major answer engines — ChatGPT, Google AI Overviews, Google AI Mode, Perplexity, and Gemini — change from one day to the next, and turns that into a single 0–100 score per engine.

What is "AI search volatility"?
AI search volatility is the rate at which the brands, pages, and sources cited in AI-generated answers change over time.

What does the Pulse score actually mean?
The Pulse score runs from 0 to 100 and represents how much citation turnover an engine showed in the last 24 hours.

How is this different from Semrush Sensor or a Google SERP volatility tracker?
Surfer Pulse measures movement inside AI answers — the citations and sources that engines like ChatGPT and AI Overviews surface.

Which AI engines does Surfer Pulse track?
Surfer Pulse tracks five major answer engines: ChatGPT, Google AI Overviews, Google AI Mode, Perplexity, and Gemini.

How often is the data updated?
Pulse refreshes once every 24 hours, at [00:00 UTC].

Why does AI search volatility matter for my brand?
An answer engine typically cites only a few sources per prompt, so when volatility spikes, the gap between "cited" and "invisible" can open or close in a single day.

What causes AI answers to change so much?
Three things:

1. Model updates
2. Index and freshness refreshes
3. Citation reshuffles

What's free, and what needs a Surfer account?
Reading today's volatility for ChatGPT and Google AI Overviews is completely free. Creating a free Surfer account unlocks the remaining engines.

Volatility spiked. How do I protect my AI visibility?
Start by checking your Visibility Score, mention rate, and average position across every engine.

Is AI visibility replacing SEO?
Not replacing — expanding. Ranking still helps, but your content now has to earn a citation inside the answer.