AEO Scanner vs HubSpot AEO Grader: Which AI Visibility Tool Should You Use?

AI search is eating traditional search alive. ChatGPT processes an estimated 2.5 billion prompts per day (DemandSage, March 2026). Google AI Overviews appear on nearly half of US search queries (DemandSage, February 2026). And the average AI search visitor converts at 4.4x the rate of traditional organic traffic (Semrush, 2026).

If you're trying to figure out how your brand shows up in AI-generated answers, two tools keep coming up: AEO Scanner and HubSpot's AEO Grader.

Both scan AI engines and generate visibility reports. But they cover different engines, report at different levels of detail, and serve slightly different use cases. This comparison breaks down exactly where each tool shines — and where it falls short.

What Each Tool Does

HubSpot AEO Grader

HubSpot's AEO Grader is a free AI visibility tool from HubSpot's marketing platform. You enter your brand name and domain, and it runs queries across GPT-4o, Perplexity, and Gemini to analyze how answer engines represent your business.

The tool calculates a brand performance score across five dimensions:

• Brand recognition strength — how well AI engines know your brand
• Competitive market positioning — Leader, Challenger, or Niche Player categorization
• Contextual relevance — how AI engines characterize your business across different query types
• Sentiment polarity — whether AI responses about your brand skew positive, neutral, or negative
• Citation frequency — how often your brand appears in AI-generated responses

The analysis typically takes 3-5 minutes. HubSpot also provides share of voice metrics, showing your brand's presence relative to competitors in AI responses.

AEO Scanner

AEO Scanner is a freemium AI visibility tool that queries ChatGPT, Claude, and Gemini with prompts relevant to your brand. Each scan runs 10 prompts across all three engines — 30 queries total — and generates a visibility report.

What you get:

• Visibility score per engine and overall
• Exact AI quotes — the specific text each AI engine generates about your brand, shown at the prompt level
• Prompt-level breakdown — which specific queries mention your brand and which don't
• Content gap recommendations — actionable suggestions for improving visibility where you're currently absent

Side-by-Side Feature Comparison

Here's the full breakdown:

| Feature | AEO Scanner | HubSpot AEO Grader | |---------|------------|-------------------| | Price | Freemium — 1 free scan. Starter $29/mo (10 scans), Pro $99/mo (unlimited) | 100% free, unlimited reports | | ChatGPT | Yes (GPT-4o-mini) | Yes (GPT-4o) | | Claude | Yes (Claude 3 Haiku) | No | | Gemini | Yes (Gemini 2.0 Flash) | Yes | | Perplexity | No | Yes | | Google AI Overviews | No | No | | Prompts per scan | 10 per engine (30 total) | Dozens (automatic, varies by brand) | | Exact AI quotes | Yes — full text at prompt level | Summary-level only | | Content gap analysis | Yes — specific recommendations | Limited | | Competitive positioning | Basic (who else appears in responses) | Detailed — Leader/Challenger/Niche Player categorization | | Share of voice | No | Yes — relative presence vs. competitors | | Source credibility scoring | No | Yes — evaluates authority of sources referencing your brand | | Sentiment analysis | Basic | Detailed — polarity scoring across contexts | | Scan speed | ~1-2 minutes | ~3-5 minutes | | Account required | No (free scan) / Yes (paid plans) | No | | Best for | Seeing exactly what AI says, finding content gaps, Claude coverage | Overall brand health score, competitive benchmarking, free unlimited usage |

When to Use HubSpot AEO Grader

HubSpot's tool is the right choice when:

You want a free, unlimited AI visibility check. No usage caps, no credit card, no trial period. You can run as many reports as you want across as many brands as you want. For teams just starting to explore AEO, the zero cost of entry is hard to beat.

Competitive benchmarking is your primary goal. HubSpot's Leader/Challenger/Niche Player framework gives you a clear picture of where your brand sits in the competitive landscape. The share of voice metrics show exactly how much of the AI conversation you own versus competitors. If you're a marketing director reporting to a CMO, this framing translates well into executive updates.

You need Perplexity coverage. Perplexity hit 45 million monthly active users and processes over a billion search queries per month (DemandSage, 2026). It's become a serious alternative to Google for research-heavy queries. HubSpot covers it. AEO Scanner doesn't.

You're already in the HubSpot ecosystem. If your team uses HubSpot CRM, Marketing Hub, or Content Hub, the AEO Grader fits naturally into your existing workflow. No new vendor relationship needed.

When to Use AEO Scanner

AEO Scanner is the right choice when:

You need Claude coverage. This is the biggest differentiator. Claude is Anthropic's AI model, and its training data and retrieval patterns differ meaningfully from ChatGPT and Gemini. A brand that scores well on ChatGPT might be invisible on Claude — or vice versa. HubSpot covers Perplexity instead of Claude, which means you're missing a significant AI engine if you only use HubSpot's tool.

Why does Claude matter? Anthropic's Claude is growing fast, and its user base skews toward knowledge workers, developers, and professionals making high-value purchasing decisions. If your target audience overlaps with that profile, Claude visibility is not optional.

You want to see exactly what AI engines say about you. AEO Scanner shows the full text of each AI response at the prompt level. You can read the exact sentences ChatGPT, Claude, and Gemini generate about your brand for each specific query. HubSpot summarizes this into scores and categories, which is useful for dashboards — but less useful when you need to understand precisely what's being said and where you're being misrepresented.

You need specific content gap recommendations. AEO Scanner analyzes where your brand is absent and provides actionable recommendations for filling those gaps. If you're an SEO professional or content marketer building a publishing roadmap, these specifics save time.

You want prompt-level granularity. Not all prompts are equal. "What is [your brand]?" tests awareness. "Best [category] tools 2026" tests competitive positioning. "How do I [problem you solve]?" tests solution association. AEO Scanner shows you results per prompt, so you can see exactly which types of queries work for your brand and which don't. That level of detail helps you prioritize which content to create first.

Can You Use Both?

Yes — and you probably should.

Neither tool covers every AI engine. AEO Scanner covers Claude but not Perplexity. HubSpot covers Perplexity but not Claude. Neither covers Google AI Overviews (the AI summaries that appear at the top of Google search results), which is a gap in the market no standalone tool has fully solved yet.

Here's a practical approach:

1. Start with HubSpot AEO Grader for a free baseline. Get your brand performance score, competitive positioning, and share of voice across GPT-4o, Perplexity, and Gemini. This costs nothing and takes five minutes.

2. Run AEO Scanner to fill in what HubSpot misses. Get your Claude visibility, read the exact AI quotes, and identify specific content gaps. The free scan gives you one complete report across ChatGPT, Claude, and Gemini.

3. Compare the results. Do the engines agree on how they position your brand? Are there discrepancies? Often, a brand is well-represented on ChatGPT but poorly represented on Claude (or the reverse). These gaps tell you exactly where to focus your optimization efforts.

4. Use the detailed insights to act. HubSpot tells you where you stand. AEO Scanner tells you what to do about it. The combination gives you both the strategic picture and the tactical playbook.

Research from Semrush found that asking AI tools the same question 100 times produces nearly 100 unique brand lists (Semrush, 2026). The more engines and prompts you cover, the more accurate your picture of AI visibility becomes.

The Claude Blind Spot: Why It Matters

The biggest differentiation between these tools comes down to one engine: Claude.

HubSpot's AEO Grader covers ChatGPT, Perplexity, and Gemini. AEO Scanner covers ChatGPT, Claude, and Gemini. The overlap is ChatGPT and Gemini. The gap is Perplexity (HubSpot only) and Claude (AEO Scanner only).

Here's why the Claude gap is worth paying attention to:

Different training data means different answers. Claude's training corpus and retrieval approach differ from ChatGPT's and Gemini's. Brands that appear prominently in ChatGPT responses are not guaranteed to appear in Claude's — and the reverse is also true. Each model has its own set of biases, source preferences, and knowledge gaps.

Claude's user base is growing and high-value. Claude has carved out a niche among professionals, researchers, and developers. If your product targets B2B buyers, technical decision-makers, or knowledge workers, Claude is where many of them go for recommendations.

You can't fix what you can't see. If you only scan ChatGPT, Perplexity, and Gemini, you have no idea how Claude represents your brand. Maybe it's accurate and positive — great. Maybe it's outdated, incorrect, or attributing your features to a competitor. You won't know until you check.

Frequently Asked Questions

Is HubSpot AEO Grader really free?

Yes. HubSpot's AEO Grader is completely free with no usage limits, no trial period, and no credit card required. You can run unlimited reports across unlimited brands. It's part of HubSpot's free tools suite, designed to drive awareness of their broader marketing platform.

What AI engines does AEO Scanner cover that HubSpot doesn't?

AEO Scanner covers Claude (Anthropic's AI model), which HubSpot does not scan. Claude has distinct training data and retrieval patterns from ChatGPT and Gemini, meaning your brand's visibility on Claude can differ significantly from what the other engines show. On the flip side, HubSpot covers Perplexity, which AEO Scanner does not.

Which tool gives more detailed reports?

It depends on what you mean by "detailed." HubSpot provides a broader strategic view — brand scores across five dimensions, competitive positioning frameworks, share of voice, and source credibility analysis. AEO Scanner provides deeper tactical detail — exact AI quotes at the prompt level, per-query breakdowns showing which prompts mention your brand and which don't, and specific content gap recommendations. If you need a dashboard, go HubSpot. If you need a playbook, go AEO Scanner.

Can I track my AI visibility over time with either tool?

HubSpot AEO Grader allows you to run unlimited reports, so you can manually track changes by running periodic scans. AEO Scanner currently provides single-scan reports — you run a scan, get results, and can run another later to compare. Neither tool currently offers automated time-series tracking with historical dashboards. Both are snapshot tools — you scan, get a report, and act on the findings.

The Bottom Line

Both AEO Scanner and HubSpot AEO Grader are solid tools for understanding how AI engines represent your brand. They're not interchangeable — they cover different engines and report at different levels of detail.

If you want a free, unlimited competitive benchmarking tool with Perplexity coverage, start with HubSpot AEO Grader.

If you want Claude coverage, exact AI quotes, and specific content gap recommendations, run a scan with AEO Scanner.

If you want the full picture, use both. AI search visibility is too fragmented — and too consequential — to rely on any single tool.