What is AEO (AI Engine Optimization)?

AEO is the practice of structuring your website so AI answer engines - ChatGPT, Perplexity, Google AI Overviews, Claude - can find, understand, and cite it. SEO gets you ranked in search results. AEO gets you into AI-generated answers. Different game, different rules.

What does the free AEO audit include?

The free audit analyzes your website across 48 criteria that determine AI visibility, including llms.txt, Schema.org structured data, Q&A content format, clean crawlable HTML, entity authority, robots.txt AI policy, FAQ sections, original data, content freshness, fact density, canonical URLs, and more. You get a score out of 100 with specific findings and actionable recommendations.

What are the 48 AEO criteria?

The 48 criteria are organized into 5 pillars with fixed target shares: Answer Readiness 40%, Content Structure 25%, Trust & Authority 15%, Technical Foundation 10%, and AI Discovery 10%. Inside those pillars, criteria cover topic coherence, original data, depth, fact density, direct answers, Q&A structure, entity authority, freshness, visible dates, schema, semantic HTML, extraction friction, llms.txt, robots.txt, licensing, canonicals, sitemap coverage, and RSS. Each criterion is scored 0–10, converted into an effective weight after confidence and overlap controls, then rolled into the final score.

What happens if my site scores below 20?

A score below 20 means most fundamental AEO infrastructure is missing - no llms.txt, no relevant schema, likely blocking AI crawlers, no FAQ content. The good news is the fastest gains come from this starting point. Adding llms.txt, basic Organization schema, and unblocking AI crawlers in robots.txt can double your score in a single day.

What is llms.txt and do I need one?

llms.txt is a plain-text file at your domain root — like robots.txt — that gives AI assistants a structured summary of your website. What your business does, key content areas, how to navigate your site. It helps AI systems understand your business without crawling every page. If you want AI visibility, you need one.

correliabio.com - AEO Audit Report | 55/100

WINTER 2018 correliabio.com

Moderate AI visibility with 28 of 48 criteria passing. Biggest gap: llms.txt file.

Scoring Methodology

How Your AEO Site Rank Is Calculated

A weighted average of 48 deterministic criteria. Each scored 0-10, each with a specific weight. No AI judgment calls - every point is traceable.

Weak visibilityOut of 100 possible points

The Formula

Score = sum(criterion_score / 10 * weight * 100) / sum(weights)

Each criterion is scored 0-10 by deterministic checks, multiplied by its weight, and summed to produce a 0-100 overall score.

Your Score Breakdown

Content9 criteria

Q&A Content Format15%2/10+3.0

FAQ Sections10%4/10+4.0

Original Data10%7/10+7.0

Content Freshness7%5/10+3.5

Direct Answer Paragraphs7%10/10+7.0

Fact & Data Density5%8/10+4.0

Definition Patterns4%5/10+2.0

Query-Answer Alignment8%4/10+3.2

Content Cannibalization5%10/10+5.0

Subtotal71%+38.7

Structure5 criteria

Schema.org JSON-LD15%10/10+15.0

Clean, Crawlable HTML10%4/10+4.0

Semantic HTML55%4/10+2.0

Table & List Extractability7%3/10+2.1

Schema Coverage3%9/10+2.7

Subtotal40%+25.8

Discovery5 criteria

llms.txt10%0/10+0.0

robots.txt for AI5%5/10+2.5

Internal Linking10%10/10+10.0

Sitemap Completeness5%10/10+5.0

RSS/Atom Feed3%10/10+3.0

Subtotal33%+20.5

Trust Signals6 criteria

Entity Authority10%8/10+8.0

Content Licensing4%0/10+0.0

Author & Expert Schema4%7/10+2.8

Canonical URL4%10/10+4.0

Content Velocity3%10/10+3.0

Visible Date Signals4%3/10+1.2

Subtotal29%+19.0

Overall Score100%55/100

Score Ranges

86-100AI-first content architecture

71-85Strong AI visibility

56-70Moderate visibility

41-55Weak visibility

26-40Minimal visibility

0-25Not on the radar

Key Points

Topic Coherence carries the highest weight at 14%, followed by Original Data at 10%, across 48 total criteria.

No HTTPS means Clean HTML is capped at 3/10, costing approximately 3-4 overall points.

Every criterion uses deterministic checks. Same site, same audit, same score - every time.

Read full scoring methodology →

↑36 since v8

Answer Readiness

~40% weight

6/10

Content Structure

~25% weight

5/10

Trust & Authority

~15% weight

6/10

Technical Foundation

~10% weight

4/10

AI Discovery

~10% weight

7/10

Verdict

Below-average AEO readiness at 55/100 - multiple areas need attention. Key strengths include Schema.org Structured Data, Internal Linking Structure, and Sitemap Completeness. Priority gaps: llms.txt File, Content Licensing & AI Permissions, and Speakable Schema.

Top priorities

llms.txt FileDiscovery+10 pts

Content Licensing & AI PermissionsDiscovery+10 pts

Speakable SchemaTechnical+10 pts

#1925of 13300

View full rankings →

How to Improve

Current

55/100

Projected

100/100

27Total Fixes

10Quick Wins

~44hEst. Effort

Quick Wins

Create /llms.txt fileFix HTML structure and meta tagsConfigure robots.txt for AI crawlersBuild FAQ sections with schemaImplement semantic HTML5 elementsAdd content freshness signalsAdd definition-style contentAdd ai.txt and content licensingImprove citation-ready writing qualityPackage evidence for AI engines

Fix

Impact

Effort

Create /llms.txt file

Add a machine-readable llms.txt file at your domain root that describes your site, services, and key pages for AI engines.

critical

low

Create /llms.txt file

critical|low

Add llms-full.txt with extended content

Create a comprehensive llms-full.txt with detailed page descriptions, content summaries, and topic taxonomy.

medium

low

Add llms-full.txt with extended content

medium|low

Fix HTML structure and meta tags

Ensure clean, well-structured HTML with proper meta tags, HTTPS, and parseable content for AI crawlers.

high

low

Fix HTML structure and meta tags

high|low

Configure robots.txt for AI crawlers

Update robots.txt to explicitly allow AI crawlers and include sitemap directive.

high

trivial

Configure robots.txt for AI crawlers

high|trivial

Unlock Full Improvement Plan

Top Opportunities10

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Fix It With AI38

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38 copy-paste prompts ready - sign in to access.

Score Breakdown

Criteria

Status

Potential

Score

llms.txt File

critical+10 pts0/10

Content Licensing & AI Permissions

critical+10 pts0/10

Speakable Schema

critical+10 pts0/10

Content Depth

critical+10 pts0/10

Answer-First Placement

critical+10 pts0/10

Entity Disambiguation

critical+10 pts0/10

Image Context for AI

critical+10 pts0/10

Owned Data Density

critical+10 pts0/10

Q&A Content Format

critical+8 pts2/10

Evidence Packaging

critical+8 pts2/10

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Site Pages

URLSiteIn-linksCategoryIssuesWords

correliabio.com/resourcesResources - correliabio

resources

640

correliabio.com/resources32

Resources - correliabio

correliabio.com/promoting-player-safety-neon54-casinos-to...Promoting Player Safety: Neon54 Casino's Top Priority for a Secure Gaming Experience - correliabio

content

818

correliabio.com/promoting-player-safety-neon54-casinos-to...51

Promoting Player Safety: Neon54 Casino's Top Priority for a Secure Gaming Experience - correliabio

Changes since v8Last audited 9 days ago

→

+36

View full comparison →

Criterion

Delta

Schema.org Structured Data

0/10

10/10

+10

Q&A Content Format

0/10

2/10

Clean, Crawlable HTML

0/10

4/10

Entity Authority & NAP Consistency

1/10

8/10

robots.txt for AI Crawlers

2/10

5/10

Comprehensive FAQ Section

0/10

4/10

Original Data & Expert Analysis

0/10

7/10

Internal Linking Structure

0/10

10/10

+10

Semantic HTML5 & Accessibility

0/10

4/10

Content Freshness Signals

0/10

5/10

Sitemap Completeness

0/10

10/10

+10

RSS/Atom Feed

0/10

10/10

+10

Table & List Extractability

0/10

3/10

Definition Patterns

0/10

5/10

Direct Answer Paragraphs

0/10

10/10

+10

Author & Expert Schema

0/10

7/10

Fact & Data Density

0/10

8/10

Canonical URL Strategy

0/10

10/10

+10

Content Publishing Velocity

0/10

10/10

+10

Schema Coverage & Depth

0/10

9/10

Query-Answer Alignment

5/10

4/10

-1

Content Cannibalization

5/10

10/10

Visible Date Signal

0/10

3/10

Topic Coherence

5/10

7/10

Content Depth

3/10

0/10

-3

Helpful Purpose Alignment

0/10

5/10

First-Hand Experience Signals

0/10

5/10

Creator Transparency

0/10

5/10

Methodology Transparency

0/10

5/10

Citation-Ready Writing Quality

0/10

8/10

Evidence Packaging

0/10

2/10

Extraction Friction Score

2/10

4/10

Image Context for AI

5/10

0/10

-5

Duplicate Content Blocks

10/10

9/10

-1

Cross-Page Duplicate Content

5/10

10/10

Internationalization Signals

0/10

3/10

Page Speed: Load Blockers

10/10

8/10

-2

Page Speed: Page Size

10/10

8/10

-2

Answer Capsule Pattern

5/10

2/10

-3

Entity Density

3/10

10/10

Sentence Atomicity

3/10

2/10

-1

Add Answer-First PlacementAdd Owned Data SignalsAdd Answer Capsule PatternsPackage Evidence for AIAdd Entity DisambiguationIncrease Fact & Data DensityAdd Direct Answer ParagraphsIncrease Entity DensityImprove Citation-Ready WritingStrengthen Entity Authority (NAP)

Improve Your Score

Guides for the criteria with the most room for improvement

Criteria0/10

llms.txt -The File That Separates 63 from 34

Tidio has a 251-line llms.txt. Crisp has zero. The score gap: +29 points. This single file tells AI assistants exactly what your site does -and without it, they're guessing.

Beginner·8 min readRead guide →

Criteria0/10

Content Licensing Signals

You want AI engines to cite your content. But have you actually told them they're allowed to? Most sites haven't -and AI systems default to conservative behavior.

Beginner·3 min readRead guide →

supplementary0/10

Speakable Schema Markup

Voice assistants need to pick which paragraph to read aloud from your page. Without Speakable markup, they guess -and they frequently guess wrong, reading your cookie notice.

Beginner·3 min readRead guide →

Criteria0/10

Content Depth: Why Thin Pages Are Invisible to AI

A 300-word page cannot compete with a 3,000-word deep dive for an AI citation. Content Depth measures the substance on your pages - word counts, heading structure, and the ratio of deep pages to thin ones across your site.

Intermediate·8 min readRead guide →

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Verdict

How to Improve

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Top Opportunities10

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Fix It With AI38

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Score Breakdown

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