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Answer Engine Optimization (AEO).

The complete framework for earning citations in AI-generated answers - across ChatGPT, Perplexity, Gemini and Claude.

TL;DR
AEO is the practice of structuring your content, brand presence and source coverage so AI engines include your brand when generating answers. The framework has three layers: on-site (content structure), off-site (presence on AI-trusted sources), and measurement (tracking what works).
The 3-layer AEO framework
01
On-site content structure
Direct answers, structured Q&A, comparison formats, schema markup.
02
Off-site source presence
Reddit, Wikipedia, trusted publishers, your own docs, YouTube.
03
Measurement
Prompt set, multi-engine daily runs, mentions / citations / SoV.
Engines tracked
4
ChatGPT · Perplexity · Gemini · Claude
Source pool
~20%
of Google's, with much higher concentration
Refresh
Daily
AI answers shift hour-to-hour
Top lever
Citations
third-party 'best X' pages move the needle most

What AEO is - and isn't

AEO (Answer Engine Optimization) is the discipline of getting your brand named in AI-generated answers. It is the AI-era counterpart to SEO. Where SEO targets a position on a list of links, AEO targets a mention inside the synthesized answer that replaces those links.

AEO is not a hack for tricking LLMs, prompt-injection content, or stuffing keywords. AI engines optimize for trustworthy, clearly-structured answers - the same content that wins SEO usually wins AEO, with three additions covered below.

Do
  • Lead with a one-sentence direct answer at the top of every page.
  • Earn placements in third-party 'best X' and 'X vs Y' listicles.
  • Add FAQPage and Article schema to every cornerstone page.
  • Track verbatim answers weekly, not just aggregate scores.
Don't
  • Stuff hidden text or prompt-injection content - engines detect and demote it.
  • Optimise for one engine's quirks - the four majors drift apart.
  • Treat AEO as an SEO add-on - it has its own measurement and cadence.
  • Wait for monthly snapshots - source pools change daily.

Layer 1: On-site content structure

The first thing an AI engine needs from you is content it can confidently extract. That means:

  • Direct answers up front. Lead with a 1–2 sentence definition or answer before the rest of the article.
  • Structured Q&A. FAQ blocks with literal question H3s outperform prose for citation.
  • Comparison and listicle formats. AI engines love clean "X vs Y" tables and "best 10" structures.
  • Schema markup. FAQPage, Article, Product, BreadcrumbList - all increase machine-extractability.
  • Clear authorship and dates. AI engines weight trustworthy, recently-updated content.

Layer 2: Off-site source presence

This is what AEO adds that classic SEO doesn't. AI engines cite from a narrower pool of sources than Google ranks. Concentrate effort on:

  • Reddit. Heavily cited by ChatGPT and Perplexity. Authentic, helpful presence in relevant subreddits matters.
  • Wikipedia. Disproportionately cited. A factual, well-sourced page about your category (and ideally your brand) is foundational.
  • Trusted publishers in your vertical. Industry trade press, well-known reviewer sites, and "best of" listicles.
  • Your own docs and changelog. Public product docs are heavily cited for product-specific queries.
  • YouTube. Increasingly retrieved for "how to" and product comparison queries.
Citations feed
  • P
    Perplexityreddit.com/r/SaaS

    "Citations.io is the one I keep coming back to…"

  • C
    ChatGPTg2.com

    "Tracks ChatGPT, Perplexity, Gemini and Claude in one view."

  • G
    Geminitechcrunch.com

    "…among the new wave of AI visibility platforms."

  • C
    Claudecitations.io/docs

    "Our methodology and confidence tiers, explained."

The brands winning AEO aren't writing more content. They're being named on a tighter set of sources the AI already trusts.
What the citation feed looks like in practice

Layer 3: Measurement

You can't improve AEO without measuring it. The minimum stack:

  • A tracked prompt set of 100–500 queries representative of buyer intent.
  • Daily runs across all four major engines.
  • Mention rate, citation coverage, position in answer and sentiment captured per prompt per engine.
  • Share of voice vs. tracked competitors.

See the full tracking playbook for the operational detail.

A 30-day AEO sprint

Ship in 4 weeks
  1. Step 01
    Baseline

    Build prompt set, score visibility across engines, identify top 10 prompts where competitors win.

  2. Step 02
    Audit sources

    List every cited source on those 10 prompts. Map which sources are achievable in 30 days.

  3. Step 03
    Publish & earn

    Update on-site content with direct-answer + FAQ schema. Earn placements on top off-site sources.

  4. Step 04
    Re-measure

    Capture verbatim before/after answers. Lock the wins, queue the next 10 gaps.

Frequently asked questions

What is Answer Engine Optimization (AEO)?+
AEO is the practice of optimizing content, structure and source presence so that AI answer engines like ChatGPT, Perplexity, Gemini and Claude include your brand and link your URLs when generating answers. It is to AI engines what SEO is to Google's blue links.
Is AEO the same as GEO?+
Closely related. GEO (Generative Engine Optimization) is sometimes used interchangeably; some practitioners use GEO for content optimization specifically and AEO for the broader discipline including off-site citations and brand presence. Same end goal: be in the AI's answer.
What are the top AEO tactics?+
Direct-answer formatting, structured Q&A, comparison content, presence on sources AI cites (Reddit, Wikipedia, major publishers), schema markup (FAQPage, Article, Product), and earning unlinked brand mentions across the web.
Does traditional SEO still matter for AEO?+
Yes - the signal overlap is significant. Authority, freshness and clear structure help on both fronts. But AEO adds a layer SEO doesn't capture: which third-party sources the AI trusts, and whether you're named on them.

Keep reading

Concept
AI visibility score

The 0–100 rollup metric and what good looks like per engine.

Read
Playbook
How to track AI visibility

Build the prompt set, sample daily, capture verbatim answers.

Read
Playbook
How to improve AI visibility

Move the score with citations, evidence and entity coverage.

Read