Why AI keyword research beats traditional tools
Traditional keyword research tools dump 10,000 phrases on you. PNX does the opposite: it picks 20 winners, clusters them by intent, and tells you which to write first.
Get a 90-day editorial calendar from a single prompt. PNX is a free agentic SEO tool built for creators, founders and SEO teams who need real answers — fast — without paying $99/month for legacy platforms. This guide breaks down everything about AI keyword research free in plain English, with a comparison table, internal links to our free tools, and a one-click way to try it yourself.
The PNX workflow
- Seed — give PNX a topic ("project management for designers")
- Expand — it generates 50–200 variations including long-tail and question keywords
- Cluster — variations are grouped by search intent (informational / commercial / transactional)
- Prioritise — clusters are scored on difficulty vs traffic potential
- Brief — every cluster gets a content brief you can hand to a writer
Free keyword research tool comparison
| Tool | Free volume data | Clustering | Intent labels | Signup |
|---|---|---|---|---|
| PNX | ✅ (AI estimates) | ✅ Built-in | ✅ | No |
| Google Keyword Planner | ✅ Ranges only | ❌ | ❌ | Ads account |
| Ahrefs Free | 10 keywords/day | ❌ | Limited | Yes |
| Ubersuggest | 3 searches/day | ❌ | Limited | Yes |
| AnswerThePublic | 3 searches/day | Question only | ❌ | No |
From keywords to traffic
Keywords are step one. Step two is matching the right page type — see our guide to AI content generation for SEO and the agentic SEO workflow. For video creators, the same intent logic applies to YouTube SEO keywords.
<div class="cta-glass-wrap"> <a class="cta-glass" href="/chat" data-prompt="Give me 30 high-intent keywords for [your topic], clustered by intent with difficulty estimates">Cluster Keywords Free →</a> </div>Keep reading
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