HubSpot's AEO Grader (also called AI Search Grader) is completely free. No trials, no credit card, no usage limits. You run a report, get your scores, and that's it.
Coming from a company HubSpot's size, that's worth paying attention to. Here's what you need to know.
How HubSpot AI Search Grader works
You enter your brand name and business details. The tool runs dozens of test queries across ChatGPT (GPT-4o), Perplexity AI, and Google Gemini. A few minutes later, you get a comprehensive report.
The report breaks down into four parts. Your overall grade (0-100) gives you an at-a-glance score of your AI visibility. Think of it like a credit score for how well AI platforms know and recommend your brand.
The brand sentiment score analyzes the language AI uses when mentioning you. Are responses positive, neutral, or negative? If AI is describing you unfavorably, you'll know. Share of voice measures how often you appear compared to competitors for similar queries. And the personalized analysis tells you what you're doing well and where to improve.
HubSpot pricing
Completely free. No hidden costs, no trial periods, no credit card required.
You can run unlimited reports, track multiple brands (including competitors), and access all features without ever paying. HubSpot built this as a lead generation tool for their marketing platform, so they don't charge for it.
What HubSpot does well
The tool is legitimately free. This isn't a limited trial or freemium bait. You get full functionality at no cost. For a quick health check of your AI visibility, that's valuable.
Sentiment analysis is included, which most free tools skip. HubSpot tells you how you're being described, not just whether you appear. That's useful if brand perception matters as much as visibility.
You can run reports on any brand, including competitors. See how they score, what queries they win, where they're weak. And reports generate in 3-5 minutes, so there's no waiting for daily or weekly updates.
HubSpot is also a publicly traded company with a reputation to protect. The data is probably accurate, and the tool will probably exist next year.
Where Mentionable takes a different approach
HubSpot gives you a free snapshot. Mentionable gives you ongoing tracking with more LLMs.
HubSpot covers 3 platforms: ChatGPT, Perplexity, and Gemini. Mentionable covers 5, adding Claude and Grok. HubSpot is a one-time report. Mentionable tracks continuously so you catch when your visibility changes.
With HubSpot, the platform decides which queries to test. You can't specify "track these exact prompts my customers use." With Mentionable, you enter your URL, we suggest prompts based on what you offer, and you pick which ones to track or add your own.
HubSpot is designed for quick insights. Mentionable is designed for monitoring specific purchase-intent prompts over time.
Which one fits you?
HubSpot AI Search Grader makes sense if:
- You want a quick, free health check of your AI visibility
- You need to audit competitor AI visibility
- You care most about ChatGPT, Perplexity, and Gemini (not Claude or Grok)
- You don't need ongoing monitoring, just occasional snapshots
- You want sentiment analysis included
Mentionable might be better if:
- You want ongoing tracking, not just one-time reports
- You need Claude and Grok coverage
- You want to specify exactly which prompts to track
- You need prompt suggestions to get started fast, plus custom tracking
- You want to see visibility changes over time
The bottom line
HubSpot AI Search Grader is the best free snapshot tool available. Run a report, see your scores, check competitors, all without paying anything or entering a credit card.
But it's a snapshot, not a tracking system. You can't customize prompts, you can't set up alerts, and Claude/Grok aren't covered.
Use HubSpot for a quick baseline. If AI visibility matters enough to track continuously, Mentionable offers a 7-day free trial to monitor specific prompts across 5 LLMs. Use both and see which fits your workflow.