Answer engine optimization (AEO) is the work of getting your business named in the answers of ChatGPT, Gemini, Perplexity and Google's AI features. People searching for "the best AEO tool" usually expect one product that does it all. In practice, AEO is five different jobs, and the most popular AEO tools each cover one or two of them.
This guide groups the tools by job, so you can build a small stack instead of paying for features you will not use. We make one of the tools on the list, Vistobi, so we say clearly where it fits and where it does not.
The five jobs of answer engine optimization
- Find the questions. What do buyers actually ask before they choose a business like yours?
- Write answers AI can quote. Clear, direct, well-structured pages that answer those questions.
- Mark up the facts. Structured data so machines understand who you are, what you sell and where.
- Let AI crawlers in. Make sure the bots that feed AI answers can read your pages.
- Track the answers. Check, over time, whether AI assistants mention or recommend you.
A tool that claims to do all five usually does one of them well. That is fine, as long as you know which one.
AEO tools for question research
Google Search Console is free and the most honest source you have: the real queries that already bring impressions to your site. Filter for queries that start with how, what, which, best or vs. Those are the questions answer engines get too.
People Also Ask and AlsoAsked. The "People also ask" box in Google shows related questions; AlsoAsked maps them into a tree, which is useful for planning one page that answers a whole cluster.
AnswerThePublic and keyword tools such as Ubersuggest, Semrush or Ahrefs show question-style searches with volume, so you can decide which questions are worth a page.
Your own inbox. Sales emails, support tickets and chat logs are the best question list most businesses never use.
AEO tools for content
Content optimization tools such as Frase, Surfer and Clearscope compare your page with the pages that already rank and suggest topics you missed. Use them to check coverage, not to stuff terms.
A plain writing checklist does most of the work: answer the question in the first two sentences, use the words the buyer used, add a short list or table, and name your business, location and service clearly. Answer engines quote pages that make the answer easy to lift.
AEO tools for structured data
Google's Rich Results Test and the Schema Markup Validator (schema.org) check whether your Organization, LocalBusiness, Product, FAQ and Article markup is valid.
SEO plugins such as Yoast SEO and Rank Math add basic schema to WordPress sites without code.
Google Business Profile is not a schema tool, but for local businesses it is the most important structured source of facts Google's AI features use. Keep it complete and current.
AEO tools for crawler access
Your robots.txt file decides which AI crawlers may read your site. Check the rules for GPTBot, OAI-SearchBot, ClaudeBot, PerplexityBot and Google-Extended, and make sure you are not blocking the ones whose answers you want to appear in.
Search Console's URL Inspection shows whether Google can render a page, which matters for sites built with JavaScript.
An llms.txt file is an optional Markdown summary of your site for language models. It does not control access and is not an official standard, but it is cheap to add. Our guide explains what llms.txt is and how to create one.
AEO tools for tracking AI answers
This is the category most people mean by "AEO tool": software that asks AI assistants your buyers' questions on a schedule and records whether you are mentioned. Enterprise platforms such as Profound, dedicated trackers such as Peec AI and Otterly.ai, and modules in SEO suites such as Semrush, Ahrefs and SE Ranking all work here. We compared them in detail in best AI visibility tools.
Where Vistobi fits: Vistobi asks ChatGPT and Gemini the buyer questions it suggests from your website (you can edit them), shows whether you are mentioned, recommended or missing and which sources the answers used, and saves every check so you see the trend. The gaps become to-dos next to your SEO fixes, content and Google Business Profile work. It checks two assistants; if you need Perplexity or Copilot in the same report, one of the dedicated trackers covers more.
A simple AEO stack by business size
| Business | Question research | Content | Structured data and access | Tracking |
|---|---|---|---|---|
| Small business or local service | Search Console, People Also Ask | Writing checklist | SEO plugin, Rich Results Test, Google Business Profile, robots.txt check | Manual monthly check or a free plan |
| Online store or growing SME | Search Console plus a keyword tool | A content optimization tool | Product and Organization schema, robots.txt, llms.txt | A lightweight tracker |
| Agency with several clients | Keyword tool, AlsoAsked | Content optimization tool | Schema validator in the QA routine | A tracker with per-client reports |
Start with the free tools in each column. Pay for a tool only when the free version stops answering your question.
How to choose AEO tools
- Pick by job, not by label. "AEO", "GEO" and "LLM SEO" tools are often the same category under different names. Ask which of the five jobs the tool actually does.
- Check the assistants covered. A tracker is only useful if it checks the assistants your buyers use.
- Look for sources, not only scores. The sources an AI answer relies on tell you where to get mentioned.
- Make sure someone acts on it. Data without a to-do list changes nothing. Choose tools that fit the time your team really has.
Key takeaways
- Answer engine optimization is five jobs: questions, content, structured data, crawler access and tracking.
- Most of the stack is free: Search Console, People Also Ask, Rich Results Test, Google Business Profile and a robots.txt check.
- Paid AEO tools earn their place in content optimization and in tracking AI answers over time.
- Vistobi tracks ChatGPT and Gemini and turns the gaps into SEO and content to-dos in one place.
Related reading: GEO vs SEO, how to rank in ChatGPT and what is answer engine optimization.