The Best Free AEO Tools (2026)
You can run a real AEO program for $0 in 2026 — a free AI-readiness audit, a free or near-free prompt tracker, and manual checks cover most small and mid-market brands. Here are the best free AEO tools and how to stack them.
You can run a real AEO program for $0 in 2026: a free AI-readiness audit, a free or near-free prompt tracker, and a few manual checks cover most small and mid-market brands. The free stack has gotten genuinely good — start here before paying for anything.
Quick verdict
Best free starting stack: a free AI-readiness audit (our AEO Analyzer or HubSpot's AEO Grader) for a baseline, plus a free prompt tracker (Promptwatch, Sight AI, or Ahrefs Brand Radar's free tier) for ongoing monitoring. Add Otterly Lite (~$29/mo) when you outgrow free limits.
What can you get for free?
For free, you can get two of the three things an AEO program needs: a baseline audit and ongoing visibility tracking. (The third — actually improving your content and authority — is work, not software.) A free audit scores how AI-ready your pages are; a free tracker runs a small prompt set and reports who gets cited. Together they're enough to start. For the manual method that needs no tools at all, see how to measure your AI visibility.
The best free AEO tools at a glance
| Tool | Type | Free tier | Notes |
|---|---|---|---|
| AEO Analyzer (ours) | Audit | Free | Scores how the major engines describe and recommend you |
| HubSpot AEO Grader | Audit | Free | One-shot AI-readiness score + report card |
| Ahrefs Brand Radar | Tracker | Free tier | Watch custom prompts; large prompt database |
| Promptwatch | Tracker | Free (≈10 prompts) | ChatGPT tracking, single site |
| Sight AI | Tracker | Free (≈10 queries) | Weekly updates; paid from ~$39/mo |
| Otterly.AI | Tracker | Trial / ~$29/mo | Cheapest serious daily tracker |
How to build a $0 AEO stack
Build a free stack in three moves, then upgrade only when a limit genuinely blocks you.
- 1
Get a baseline audit
Run our AEO Analyzer or HubSpot's AEO Grader to see how AI engines currently describe and recommend you. Share the score with stakeholders.
- 2
Stand up a free tracker
Pick a free tier (Promptwatch, Sight AI, or Ahrefs Brand Radar) and load your ~10 highest-intent questions. Check weekly and log who gets cited.
- 3
Do the actual AEO work
Rewrite key pages answer-first, add inline evidence, and earn off-site mentions. No tool does this for you — it's the work that moves the metrics.
- 4
Upgrade with a specific question
Only pay when you can name the question a paid tier answers that free can't — more prompts, daily cadence, more engines, or competitor analysis at scale.
Free tiers are for starting, not scaling
Free trackers cap prompts (often ~10) and refresh slowly (often weekly). That's fine to begin, but as your program grows you'll want daily sampling across more engines — the point at which a paid tool earns its cost. Don't let a free limit quietly hide where you're losing.
The bottom line
A free audit plus a free tracker is enough to run a serious AEO program for the first 90 days — and the work that actually moves your visibility (answer-first content, evidence, and authority) is free anyway. When you outgrow free, compare your options in the best AI visibility tools, and ground the strategy in what is AEO and The AEO Canon.
How we review
This roundupis compiled from each vendor’s own documentation and current independent testing, and was last verified in 2026; we re-check quarterly. Pricing and features in this space change fast — confirm current details on the vendor’s site before buying. We don’t earn affiliate commissions on the tools we cover, and we don’t accept payment for placement.
Frequently asked questions
- Are there free AEO tools that actually work?
- Yes. In 2026 the free stack is genuinely capable — a free AI-readiness audit (like HubSpot's AEO Grader or our AEO Analyzer) plus a free or low-cost prompt tracker (Otterly's entry tier, a free Promptwatch/Sight AI plan, or Ahrefs Brand Radar's free tier) covers most small and mid-market brands for the first 90 days without any budget.
- What's the best free AI visibility tracker?
- For a true free tier, Promptwatch and Sight AI both offer free plans (around 10 prompts, weekly checks), and Ahrefs Brand Radar has a free tier backed by a large prompt database. Otterly's Lite plan (~$29/mo) isn't free but is the cheapest serious daily tracker. Start free, then upgrade only when you know which paid feature you need.
- Can I do AEO without any tools?
- Yes. The highest-leverage AEO work — answer-first writing, inline evidence, crawlable pages, and off-site authority — costs effort, not software. You can also track a small prompt set manually by asking the engines your key questions on a schedule and logging who gets cited. Tools save time; they don't replace the work.
- When should I upgrade from free to paid AEO tools?
- Upgrade when free limits start hiding the picture — when you need daily monitoring, more than ~10 prompts, multiple engines, or competitor and source analysis at scale. Until then, a two- or three-tool free stack is enough to run a real program.