
Answer engines like ChatGPT, Perplexity, and Gemini have fundamentally changed how buyers research brands. When a prospect asks an answer engine "what's the best CRM software" or "is [Your Brand] trustworthy," they receive a synthesized response – often without clicking through to a single website. This is the zero-click funnel: AI platforms act as the first and sometimes only touchpoint between your brand and a potential customer.
Measuring brand visibility in AI is now a prerequisite for any effective marketing strategy. Traditional SEO metrics like traffic and click-through rates don't reflect how answer engines represent your brand in generated responses. HubSpot's AEO Grader is a brand visibility measurement tool built specifically for this environment. The tool evaluates your brand across five scored dimensions – sentiment, presence quality, brand recognition, share of voice, and market position.
Don't let answer engines define your brand narrative without your input. Use HubSpot's free AEO tool to understand how leading answer engines represent your business.

HubSpot's AEO Grader evaluates your brand across five dimensions, each contributing to your overall score out of 100.
The tool's highest-weighted dimension assesses the overall tone AI platforms use when characterizing your brand. Scoring covers three layers:
Positive indicators include phrases like "praised for intuitive interface" or "recognized for strong customer support." Negative sentiment may surface mentions of limitations or customer frustrations that appear in AI training data.

Presence quality measures three components:

Measures how widely recognized your brand is across AI training data. A high recognition score means AI platforms can discuss your brand with depth and specificity, not just acknowledge that it exists.
Assesses your brand's competitive presence in AI-generated responses relative to your category. Scoring includes your brand's estimated percentage of category voice plus a rank bonus.

Classifies how AI platforms position your brand competitively. Two components contribute:
A low Market Competition score typically means AI platforms have insufficient or inconsistent signals about where your brand stands competitively.
HubSpot's AEO Grader evaluates how your brand appears across the AI systems shaping customer perception – including ChatGPT, Perplexity, and Gemini. Follow these steps to get started:
HubSpot's AEO Grader sends your brand information to ChatGPT, Perplexity, and Gemini and asks each model how it characterizes your brand based on its training data.
Get our complete playbook with 5 essential strategies to optimize your brand across answer engines and outperform competitors.
The AEO Grader currently analyzes GPT-5.2, (OpenAI), Perplexity (Sonar), and Gemini 2.0 Flash (Google). Results are cross-validated across all three platforms to produce a reliable composite assessment.
Yes. The AEO Grader accepts any brand name, enabling direct competitive intelligence. Understanding how AI platforms characterize your competitors – their market position, sentiment patterns, and recognition depth – will give you a point of comparison for your own scores.
AI models update regularly and their training data evolves. We recommend at least monthly analysis to track trends and identify shifts in sentiment or competitive positioning, with quarterly deep-dives for strategic planning.
AEO (Answer Engine Optimization) focuses on optimizing your brand's representation in AI-generated responses from platforms like ChatGPT, Perplexity, and Gemini. SEO (Search Engine Optimization) focuses on ranking web pages in traditional search results.
The key difference: SEO drives traffic to your website, while AEO ensures your brand is accurately and favorably represented when AI systems synthesize information for users. HubSpot's AEO Grader helps you establish a baseline for your brand's current AI perception, which is a prerequisite for any effective AEO strategy.
Improving your brand's AI perception requires creating authoritative, factual content that AI systems can confidently learn from and reference. Effective practices include publishing case studies with quantifiable outcomes, maintaining consistent brand messaging across your website and third-party profiles, securing coverage in reputable publications that AI training data draws from, and structuring content with semantic clarity so AI models can accurately associate your brand with the right capabilities and categories.
HubSpot's AEO Grader provides a starting point for AI brand perception optimization by showing you how AI currently characterizes your brand across sentiment, recognition, and competitive positioning.
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