Quick Verdict
You're tracking how often ChatGPT and Perplexity mention your brand, but you're torn between HubSpot's free offering and a purpose-built solution. HubSpot AEO Grader gives you basic answer engine visibility tracking at no cost, while Radix positions itself as a comprehensive AI visibility platform with analytics integration.
The fundamental difference comes down to depth versus accessibility. HubSpot's tool is a quick health check — you plug in your brand name and get a report on mention frequency across major answer engines. Radix builds an entire measurement framework around AI visibility, treating it like traditional SEO with ongoing monitoring and competitive analysis.
HubSpot AEO Grader focuses on the essentials: how often your brand appears in ChatGPT, Perplexity, and Gemini responses, plus the context of those mentions. It's a snapshot tool that runs periodic checks and delivers straightforward reports. Radix takes a different approach with prompt testing — they actually query AI models with relevant industry questions to see which brands get recommended. Their citation tracking goes deeper than simple mentions, analyzing the quality and context of AI responses. The competitor benchmarking feature lets you see how your AI visibility stacks up against direct competitors, something HubSpot's tool doesn't attempt.
But here's where it gets interesting: Radix connects AI visitor analytics to your existing web analytics platform. So when someone discovers your brand through an AI recommendation and visits your site, you can trace that journey. HubSpot's grader exists in isolation — useful for awareness but disconnected from your broader marketing data.
HubSpot wins on pricing with their completely free tier, though you'll need to create an account. Since they're public and profitable, this tool isn't disappearing anytime soon. Radix hasn't revealed their pricing structure, which for a 2025 startup typically means they're still figuring out their market positioning. Early-stage companies in this space often start with premium pricing before finding their sweet spot.
HubSpot AEO Grader works best for small businesses and marketers who want to understand their current AI visibility without spending money. If you're already using HubSpot's marketing tools, the integration is natural. It's also perfect for agencies running quick audits for prospects — you can deliver immediate value in sales conversations.
Radix makes more sense for companies treating AI visibility as a strategic priority. If you have budget allocated for AI optimization and need ongoing monitoring rather than periodic check-ins, their comprehensive approach justifies the investment. The analytics integration alone makes it valuable for enterprise teams who need to connect AI mentions to actual business outcomes.
Start with HubSpot's free grader to establish your baseline AI visibility, then upgrade to Radix once you've proven the channel drives meaningful traffic to your site.
Score comparison
Score Comparison
| Dimension | HubSpot AEO Grader | Radix |
|---|---|---|
| Feature Depth | 17.0 | 29.0 |
| Ease of Use | 65.0 | 50.0 |
| Data Quality | 42.0 | 42.0 |
| Value for Money | 95.0 | 55.0 |
| Integration | 55.0 | 0.0 |
| Market Traction | 17.0 | 6.0 |
Feature comparison
| Feature | HubSpot AEO Grader | Radix |
|---|---|---|
| Answer Engine Scanning | ✓ | — |
| Mention Context Analysis | ✓ | — |
| Competitor Benchmarking | ✓ | ✓ |
| Grading System | ✓ | — |
| Prompt Testing | — | ✓ |
| Citation Tracking | — | ✓ |
| AI Visitor Analytics | — | ✓ |
Pricing comparison
| Plan | HubSpot AEO Grader | Radix |
|---|---|---|
| Free Grader | $0 | Contact for pricing |
| HubSpot Marketing Hub | $800/month | — |
Our verdict
For features, radix-ai leads. On a budget, go with hubspot-aeo-grader.