The way people search for information is changing. Instead of scrolling through a list of blue links, more users are turning to AI-powered tools like ChatGPT, Google’s AI Overviews, and Perplexity that deliver direct answers to questions.

This shift has given rise to answer engine optimization (AEO), a discipline focused on optimizing content so it gets selected and surfaced by AI-driven answer engines rather than just ranked in traditional search results. AEO analysis helps teams understand where a brand currently stands in those answers and what to do about it.

This guide covers what AEO is, how it works, why it matters, and how to implement an AEO strategy.

Table of Contents

What is AEO analysis and how is it different from SEO?
What a Good AEO Analysis Should Measure
AEO Analysis Framework That Works
AEO Analysis Tools Reviewed
AEO Analysis Scoring and Interpretation
From AEO Analysis To Action
When HubSpot AEO Is The Right Fit
When AEO In Marketing Hub Makes More Sense
Frequently Asked Questions About AEO Analysis
What Actually Works: Bringing AEO Analysis Together

What is AEO analysis and how is it different from SEO?

AEO analysis measures how a brand is represented inside AI-generated answers. That includes whether the brand is mentioned by name, cited as a source, characterized favorably, or left out entirely for relevant prompts.

Traditional SEO analysis is built around the search engine results page — where a domain ranks for a given keyword, how many clicks and impressions it earns, and how that position shifts over time. AEO analysis works differently because answer engines do not return a ranked list of links. They return synthesized answers built from a handful of sources. That means there is no ranking position to track, only presence, framing, and share of voice.

What is an answer engine?

An answer engine is a platform like ChatGPT, Gemini, or Perplexity that responds to a query with a direct, synthesized answer. Traditional search engines return a list of links and leave the user to decide which source to trust. An answer engine reads across multiple sources, pulls out the relevant information, and presents a single response, often citing the sources it drew from along the way.

The distinction matters for brands because answer engines are increasingly where buyers start their research. A brand that appears prominently and favorably in those answers has an advantage that does not show up in traditional SEO metrics. A brand that is absent or mischaracterized has a visibility problem that keyword rankings alone cannot diagnose.

Does “Google Answer Box Optimization” still matter?

Google Answer Box Optimization still matters. Structuring content to win the featured snippet at the top of a traditional Google search results page remains best practice. Featured snippets appear less frequently than they once did, but the structural habits that helped win them — clear definitions, concise steps, and well-formatted lists — are the same habits that support a strong AEO strategy.

What a Good AEO Analysis Should Measure

Before comparing AEO analysis tools (not to be mistaken with SEO analysis tools), it helps to establish what marketers should track.

Brand Visibility Across Answer Engines

Brand visibility is an AEO metric that counts how often AI platforms mention or cite a brand for specified prompts. It is a foundational metric in AEO analysis, though it has drawn criticism as a vanity metric since visibility does not always translate directly to clicks or conversions.

My perspective is that brand visibility is the prerequisite for clicks and conversions, not a substitute for them. Without visibility, a brand cannot get the click — and without the click, there is no conversion. That makes it essential to track, even if it sits earlier in the funnel than most marketers are used to measuring.

Research shows the value of visibility even when websites are not getting clicked. Responsive’s report, Inside the Buyer’s Mind, found that nearly as many potential buyers start searching with generative AI chatbots (32%) as with traditional web search (33%). In the Technology and Software industry, that number climbs significantly — buyers use generative AI for as many as 56% of searches.

HubSpot’s research shows a similar pattern of audience-specific AI adoption. According to HubSpot’s 2025 AI Trends for Marketers report, nearly 31% of Gen Zers default to chatbots or AI to find information online. Both findings point to the same conclusion: different audiences engage with generative AI at very different rates, which means brand visibility in AI answers matters more for some markets than others.

Pro tip: Knowing who’s in the audience and how they search helps determine how heavily to prioritize AEO analysis, though every brand stands to benefit from it.

This audience-level split shows up in HunSpot’s research on the CRM buying journey too.

HubSpot’s Q1 2026 Competitive NPS Survey of 3,063 CRM decision-makers found that 42% of CRM prospects use AI search as part of their evaluation, and AI search is the number one predictor of purchase intent across all six segments studied. AI search users are also deeper evaluators, completing an average of 4.1 evaluation activities versus 3.3 for non-users, and they lean more on analyst reports and ROI calculators rather than websites and third-party review sites.

The takeaway? Visibility in AI search earns brands a spot on the shortlist.

Once buyers form that shortlist through AI search, they typically follow up with a branded search to confirm and validate their choice before converting. By the time ‌branded search happens, the buyer has already done most of their evaluation.

Failure to earn brand visibility in AI is effectively a failure to make the shortlist of potential vendors. That makes visibility worth tracking closely. The challenge is that tracking it is harder than it sounds.

When someone asks an answer engine a question relevant to a brand’s category, marketers need to know whether the brand shows up. This sounds simple, but it quickly becomes complicated when there are multiple versions of the same prompt, user personalization, and multiple platforms. A brand might appear by name in one answer engine and be completely absent in another, even for the exact same prompt, because each engine pulls from a different mix of sources and weighs them differently.

Marketers can certainly get a feel for how a brand performs, but AEO analysis tools provide continuous monitoring so marketers can monitor progress.

For teams that want a fast read on where things stand today, HubSpot’s AI Search Grader is an excellent starting point.

AI Search Grader is a free tool that scores how ChatGPT, Gemini, and Perplexity characterize a brand across five dimensions: sentiment, presence quality, brand recognition, share of voice, and market position. It gives marketers a baseline visibility snapshot before committing to a broader AEO (also called GEO) strategy.

Because it’s free to run, marketing teams can use it on their own domain and on many competitors, which makes it a reasonable first move before investing time into a more detailed analysis.

The following screenshot shows how AI Search Grader summarizes performance for HubSpot:

The screenshot shows market position, which HubSpot dominates compared to competitors, and also mentions comparison mentions and common comparisons across the three core AI platforms: OpenAI, Perplexity and Gemini.

Citations, Mentions, and Competitor Share Of Voice

Citation analysis reveals which domains, content types, and source types influence AI-generated answers. A mention is any point where an answer engine references a brand by name inside a response. A citation goes further — the answer engine points to a specific piece of content as the source backing up a claim, and searchers can click through to visit the brand’s website.

The images below show the difference. A mention includes the brand’s name in the response without a clickable link. The screenshot shows HubSpot mentioned alongside four competitors in a table.

A citation is a clickable link within the answer, usually citing the website.

Both mentions and citations matter, but citations should probably carry a little more weight in the AEO analysis, because they signal that an answer engine trusts a brand’s content enough to treat it as evidence rather than just a name to drop. They are also the types of visibility that may lead to a click.

Pro tip: Marketers can actually track the impact of citations by reviewing referral traffic from AI platforms in GA4. This makes citations a really helpful KPI. Marketers can establish how many citations a brand is getting versus how many clicks resulted from a citation.

In my AI and SEO reporting, I include referral traffic from AI sources to help stakeholders see the benefit of AI. Brand visibility is great, but what really engages stakeholders us how that visibility translates to visits, conversions, and revenue. I also review conversions and conversion quality as part of my AEO analysis and take this information to stakeholders.

Here’s what the top-level report looks like:

How a brand performs is one thing, but in isolation, marketers can miss the bigger picture.

This is where competitor share of voice comes in. Competitor share of voice measures how often a brand appears in an answer relative to the competitors who also show up for the same prompt. A brand might have solid visibility in isolation but still be losing ground if competitors are cited more frequently, more prominently, or in more favorable framing within the same set of answers. Tracking share of voice turns visibility from a standalone number into a competitive one, which is usually the more actionable read for a marketing team trying to prioritize where to invest.

Mention and citation counts are useful but mean more in context. Comparing a brand’s performance against industry benchmarks and tracking changes over time helps distinguish a brand-specific problem from a market-wide shift affecting the whole category.

Pro tip: HubSpot’s AI Search Sensor is a free dashboard that tracks AI answer engine volatility across ChatGPT, Gemini, and Perplexity — helping teams tell market-wide visibility shifts apart from gaps in their own AEO strategy.

The following image shows citation scores across the computer software industry. With this information, marketers can justify movements in AEO citations. For example, the computer software industry had an overall decline in early July. A drop during this time was industry wide and not site-specific.

Prompt Quality And Testing Repeatability

One of the hardest parts of AEO analysis is the sheer range of ways people actually search with AI. Unlike traditional keyword search, where a handful of head terms capture most of the volume, prompts to answer engines are personalized, conversational, and long-tail — two people asking about the same thing do not write their prompt in the same way. That makes it practically impossible for marketers to track every individual prompt a brand might be surfaced or missed in, and trying to do so usually produces a pile of disconnected data points rather than a usable signal.

The issue is that AEO analysis means little if the prompts generated are inconsistent, which is what happens when marketers try and track too much manually. The more realistic goal is to track trends across prompt groups rather than chase individual prompts.

Prompt quality refers to how well a set of test prompts represents the broader categories an audience is likely to search. That includes branded queries, category questions, and competitor comparisons, grouped in a way that reflects real search behavior rather than an exhaustive list. A narrow or poorly grouped prompt set will produce results that look precise but do not represent how the brand is actually being discovered.

Testing repeatability is the other challenge. Answer engines are not static — the same prompt run twice in the same week can return different results depending on model updates, source availability, or minor phrasing changes. That variability makes it important to run the same prompt groups on a consistent schedule using consistent phrasing, so that changes in results can be attributed to genuine shifts in visibility rather than noise. Without repeatability, AEO analysis becomes a series of disconnected snapshots instead of a trend teams can act on.

This is where tooling earns its keep. Running prompt groups manually across three answer engines is not realistic to sustain by hand for more than a handful of prompts. HubSpot AEO tracks brand visibility across ChatGPT, Perplexity, and Gemini, handling the repeat testing and surfacing the pattern so marketers are not eyeballing differences manually.

The following screenshot shows prompt tracking with HubSpot AEO:

The console on the right shows how competitor visibility has changed compared to the brand.

AEO Analysis Framework That Works

A one-off AEO audit can tell a marketing team where they stand today, but it can’t tell them whether they’re improving. Building a repeatable framework turns AEO analysis from a snapshot into a process a team can actually run ongoing.

Build a reliable prompt set.

The starting point for any AEO analysis is a prompt set that actually reflects how a brand’s audience searches.

A prompt set counts as reliable when it’s:

Broad enough to represent real search behavior. The prompts reflect what the audience actually searches, not just what a brand wants to rank for.
Consistent enough to re-run. The same prompts run on a regular schedule, ideally through a tool that handles the cadence automatically.
Grouped to produce a trend. Results are organized by prompt category so changes can be tracked over time rather than as scattered one-off snapshots.
Beyond brand search. The set includes category and competitor prompts so teams can track visibility for related searches, not just queries that include the brand name directly.

Category-level prompts are questions and comparisons someone would naturally ask when researching a solution in a brand’s space, not just questions that mention the brand by name.

For example,

What’s the best tool for X?
How do I solve Y problem?
X versus Y comparisons

Grouping these prompts by category or use case, rather than treating each one individually, is what makes the analysis manageable and repeatable. Instead of tracking dozens of individual prompt variations, a team can track a handful of prompt groups — say, “pricing questions,” “how-to questions,” and “comparison questions” — and watch how visibility shifts within each group. Grouping prompts turns the data into something usable: a dip or improvement in one group points to a specific type of buyer question a brand is winning or losing, rather than a vague, undifferentiated change in visibility overall.

Discovering prompts goes beyond pulling information from one source. Marketers should aim to build a big-picture view of the audience and how they search. Google Search Console is a useful place to build that list, since it already shows the queries a brand ranks for and the questions people are typing into traditional search. Those queries won’t map one-to-one onto AI prompts, but they reveal the underlying intent and phrasing patterns worth testing in answer engines as well.

A brand’s own customer-facing teams are an overlooked source for how audiences search. Support tickets, sales calls, and onboarding conversations are full of the language customers use to describe their problems — often before that language ever shows up in a search query. That phrasing is usually the closest thing to how a real buyer would phrase a question to an AI chatbot.

Combining category prompts, search console data, and customer-team insight produces a prompt set grounded in how people actually search, not how a marketing team assumes they search.

Capture the right evidence from answers.

A prompt set is only useful if the results are captured consistently. For every prompt run, the goal is to document more than just whether a brand appeared — it’s to capture the full shape of the answer: whether the brand was mentioned by name, whether it was cited as a source, how it was framed (favorably, neutrally, or critically), which competitors appeared alongside it, and which sources the answer engine drew from to construct its response.

This level-of-detail matters because a “yes, we appeared” result on its own doesn’t say much. A brand mentioned once, buried below three competitors and described in neutral terms, is a very different result than a brand cited directly as the source behind the answer. Capturing evidence at this level of granularity — mention, citation, framing, competitor presence, and source — is what allows a team to actually diagnose why a result looks the way it does, rather than just knowing that it does.

This is where tools come in because it’s impossible to manage sentiment across every prompt.

HubSpot’s AI Search Grader shortcuts the manual work and delivers a benchmark fast, and for free. Rather than running prompts one by one and logging each result by hand, it scores a brand’s domain across five dimensions: sentiment, presence quality, brand recognition, share of voice, and market position. That gives teams a structured baseline read before building out a fuller evidence set.

Here’s what sentiment analysis looks like:

AI Search Grader, shows the sentiment analysis with a single score, then quantitative information about the score.

When to re-run tests and compare changes?

Generally, marketers will re-run tests in accordance with the reporting schedule. This is often monthly, but some prompts might need more frequent analysis, like if new content is published or search marketers are trying to grow visibility within a particular category.

Frequent monitoring is fine, and it mirrors how most marketing teams already track Google Search Console clicks and impressions — checking in regularly is good practice, and letting an AEO tracking tool handle the actual re-running of tests removes the burden of doing it manually.

Where teams get into trouble is by reacting too fast to a single bad reading.

A drop in visibility for one prompt group in one week isn’t necessarily a sign that something’s gone wrong — it could just as easily reflect a model update, a shift in the sources an answer engine is favoring that week, or plain noise. Before reacting, it’s worth checking whether the dip is isolated to the brand or showing up industry-wide, and giving it a little time to settle before treating it as a genuine trend.

Monthly tracking is the sweet spot for actually understanding how visibility in AI search engines behaves over time — it’s frequent enough to catch real shifts, but far enough removed from day-to-day noise to reveal patterns, including seasonality and year-over-year changes that a single weekly check would never surface. This is exactly the context HubSpot’s AI Search Sensor is built to provide, helping teams tell whether a dip is a brand-specific problem worth investigating or an industry-wide shift that doesn’t need a reaction at all.

Here’s a screenshot from AI Search Sensor showing traffic trends from three platforms, ChatGPT, Gemini and Perplexity. Marketers can use it to establish benchmarks in referred traffic.

The AEO analysis tools below are split into two categories: those built for structured prompt audits and baseline scoring, and those built for ongoing citation and mention tracking.

The table covers core information about every tool, including engine coverage, depth of citation and mention analysis, competitor tracking, and whether the tool translates findings into specific recommendations rather than just reporting numbers. More information about each tool is found below.

HubSpot AI Search Grader

ChatGPT, Gemini, Perplexity

Yes

Fast, free baseline snapshot before committing to a broader AEO strategy

Peec AI

ChatGPT,

AI Mode, AI Overviews, Microsoft Copilot,

Perplexity, Gemini, Claude, GPT 5 Search, Deepseek, Qwen,

Mistral

Yes

Standalone tracking for teams that don’t need a bundled content/recommendation layer

HubSpot AEO

ChatGPT, Perplexity, Gemini

Yes

Ongoing tracking with built-in next steps, especially for teams in the HubSpot ecosystem

Profound

ChatGPT, Perplexity, AI Mode, Gemini,

Microsoft Copilot, Grok, DeepSeek, Claude, AI Overviews

Yes

Enterprise teams needing the broadest engine and region coverage

Semrush One

ChatGPT, AI Overviews, AI Mode, Gemini

Yes

Teams already in Semrush wanting AI visibility alongside existing SEO data

Tools for Prompt Audits

HubSpot AI Search Grader

HubSpot’s AI Search Grader is a free tool that gives marketers a structured, scored snapshot of how a brand is being represented across ChatGPT, Gemini, and Perplexity. Marketers enter a domain — their own or a competitor’s — and the tool runs it through a fixed evaluation across five dimensions: sentiment, presence quality, brand recognition, share of voice, and market position.

Each dimension reports on a different piece of the visibility picture:

Brand recognition measures whether the answer engine understands who the brand is and what it offers, independent of whether it’s cited in a specific answer.
Market score rounds this out by showing where the brand sits in the answer engine’s implicit ranking of options within its category.
Presence quality looks beyond a simple yes/no mention to assess how substantively the brand is represented — a passing name-check reads very differently from a detailed, accurate description of what the brand actually does.
Brand Sentiment shows how favorably (or unfavorably) a brand is described when it does appear in an AI-generated answer.

Because it is free and requires only a domain to generate a report, the grader has a few practical uses. Running it against a brand and its main competitors gives an instant read on share of voice gaps before deciding where to focus content efforts. A low presence-quality score despite decent brand recognition signals that the brand is known but not described accurately enough for an answer engine to draw from confidently. A weak sentiment score can reveal that AI is characterizing the brand in a way that does not match its actual positioning — often a sign that a competitor’s content is shaping the category narrative instead.

Because these are baseline, point-in-time scores rather than continuous tracking, the AI Search Grader is best used as a starting diagnostic — the tool that tells a team where to focus before they commit to an ongoing AEO analysis process.

Peec AI

Peec AI is a standalone AEO specialist, built entirely around AI visibility tracking rather than folding it into a broader SEO suite. It can track up to 11 AI platforms, including ChatGPT, AI Mode, AI Overviews, Microsoft Copilot, Perplexity, Gemini, Claude Sonnet 4, GPT-5 Search, DeepSeek, Qwen, and Mistral — though full platform coverage is reserved for Enterprise plans (see the pricing section below).

Core Features

Covers six AI surfaces on standard plans, including ChatGPT, AI Overviews, AI Mode, Copilot, Perplexity, and Gemini
Daily tracking with sentiment scored on a 0–100 scale, share of voice, position tracking, and citation source analysis that distinguishes sources the AI used from sources it explicitly cited
Recommendations organized into “Actions,” each with an opportunity score and specific next steps split into on-site and off-site work

Pricing: Pricing with tools like Peec AI need serious consideration as on the surface they can look affordable, but costs scale fast as more platforms are added. For three platforms, it’s $80/month, but prices rise to $420/month to track six platforms. If you want to track all 11 AI platforms, then it’s custom pricing for Enterprise solutions.