The Free Agentic SEO Tool
built for founders, writers & small teams
PNX is a new, independent AI SEO agent — free while in beta. Audits, keyword research, SERP analysis, YouTube SEO and AI content, all in one chat.
All your SEO tools, in one free agent
Every tool below is unlimited and free, powered by AI.
Free SEO Audit Tool
Full on-page & technical SEO audit in 30 seconds.
AI Keyword Research
Free keyword research tool with intent clustering.
SERP Analysis
Live SEO competitor analysis & content gap finder.
YouTube SEO
Free YouTube SEO analyzer & keyword research.
AI Content Generator
SERP-aware AI content generation for SEO.
AI SEO Strategist
Agentic SEO that plans, executes and reports.
How agentic SEO works
Ask in plain English
Describe your SEO goal — PNX picks the right tool.
Agent runs the workflow
Live page fetch, SERP parse, schema check, AI clustering.
Ship the result
Get a structured report, brief or content draft you can act on today.
PNX vs paid SEO tools
Honest comparison. No spin.
| Feature | PNX | Ahrefs | Semrush | Surfer |
|---|---|---|---|---|
| Price | Free | $99+/mo | $139+/mo | $89+/mo |
| On-page SEO audit | ✅ Unlimited | ✅ | ✅ | ✅ |
| AI keyword research | ✅ | Limited | Limited | ❌ |
| SERP analysis | ✅ Live | ✅ | ✅ | ✅ |
| YouTube SEO | ✅ | ❌ | Limited | ❌ |
| AI content generation | ✅ | Add-on | Add-on | ✅ |
| Signup required | No | Yes | Yes | Yes |
| Daily limits | None | Plan-based | Plan-based | Plan-based |
From the SEO blog
All articles →Generative Engine Optimization (GEO): The 2026 Beginner's Guide
GEO is the new SEO — instead of blue links, you're optimising to be *cited* by ChatGPT, Perplexity, Gemini and Google AI Overviews. Here's the plain-English playbook.
How to Optimize Your Website for ChatGPT and Perplexity (2026)
ChatGPT and Perplexity index the web differently than Google. Here's exactly what to change on your site to get quoted.
Google AI Overviews SEO: How to Get Cited in the AI Answer Box
AI Overviews eat the click before it happens. The counter-move: become the source they cite.
GEO vs SEO in 2026: Where to Spend Your Time (and Where Not To)
You don't need to pick between GEO and SEO. You need to know which 20% of the work now belongs to which discipline.
Built by Saboor Tahir
PNX is an independent project. No VC pressure to upsell you. Just a free, fast, agentic SEO tool you can actually trust. Read the story →
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