Search Intelligence for the AI Era

Duelly is a search intelligence platform that audits your website across three dimensions: traditional SEO, Answer Engine Optimization (AEO), and Generative Engine Optimization (GEO). Built for the 2026 search landscape where AI-powered search engines like ChatGPT, Perplexity, and Google AI Overviews determine who gets cited and who gets ignored.

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What is Duelly?

Duelly is a comprehensive website auditing tool that scores your pages on SEO, AEO, and GEO using AI-powered analysis. It crawls your site, analyzes content quality with Google Gemini, detects your platform (WordPress, Shopify, Next.js, and more), and delivers actionable, platform-specific fix instructions ranked by impact.

SEO Analysis

Evaluates technical SEO, content quality, metadata, schema markup, internal linking, and Core Web Vitals using real PageSpeed Insights data. Scores against 2026 Google crawling standards.

AEO Analysis

Measures how likely AI assistants like ChatGPT, Perplexity, and Gemini are to cite your content. Evaluates Q&A coverage, definition clarity, entity density, andstructured data quality.

GEO Analysis

Assesses how well your content performs in AI-generated search results and summaries. Analyzes expertise signals, factual density, tone objectivity, and citation likelihood across major AI platforms.

How It Works

Enter Your URL

Paste any website URL into the audit tool. No installation or code changes required.

AI Crawl & Analysis

A headless browser crawls your page. Gemini AI analyzes content quality, tone, and structure.

Get Your Scores

Receive SEO, AEO, and GEO scores out of 100 with a detailed breakdown of every penalty.

Fix & Improve

Follow prioritized, platform-specific fix instructions to improve your scores and visibility.

Three Audit Tools

Choose the right level of analysis for your needs.

Pro Audit

Single-page deep analysis. Dual AI calls for score stability, real Core Web Vitals from PageSpeed Insights, site type detection, and up to 15 prioritized fix instructions. 10 credits per scan.

Run Pro Audit

Deep Scan

Multi-page site-wide audit. Crawls up to 50 pages, runs AI analysis on each, detects duplicate titles and meta descriptions, checks robots.txt and sitemap, and provides sitewide intelligence. 10 credits + 1 per page.

Run Deep Scan

Competitive Intel

Head-to-head comparison of two websites. See exactly where your competitor outperforms you across SEO, AEO, and GEO with gap analysis and strategic recommendations. 20 credits per comparison.

Run Comparison

What Sets Duelly Apart

Dual AI Scoring

Every Pro Audit runs two parallel Gemini AI calls and averages the results for consistent, stable scores across repeated scans.

Real Core Web Vitals

Integrates the Google PageSpeed Insights API for real LCP, INP, and CLS data — the same metrics Google uses as ranking signals.

Site Type Detection

Automatically detects your site type (e-commerce, blog, SaaS, portfolio, etc.) and adjusts scoring weights accordingly.

Platform-Specific Fixes

Detects WordPress, Shopify, Wix, Squarespace, Next.js, and more. Fix instructions reference your actual admin paths and plugins.

Transparent Scoring

Every point deducted is explained with severity, impact reasoning, and a step-by-step fix. No black-box scores.

Live Interrogation

Secretly asks AI models if they would recommend your business — revealing your actual visibility in AI-generated answers.

Frequently Asked Questions

What is AEO (Answer Engine Optimization)?

AEO is the practice of optimizing your content so that AI-powered answer engines like ChatGPT, Perplexity, and Google AI Overviews cite your website as a source. It focuses on clear definitions, Q&A formatting, structured data, and entity density — the signals AI systems use to determine which sources to reference.

What is GEO (Generative Engine Optimization)?

GEO measures how well your content performs in AI-generated search results. It evaluates expertise signals (E-E-A-T), factual density, tone objectivity, and citation likelihood. Content that scores high on GEO is more likely to appear in AI summaries and be recommended by large language models.

How does Duelly calculate scores?

Duelly uses a multi-layer approach: a headless browser crawls your page to extract technical data, then Google Gemini AI analyzes content quality and semantic signals. Two parallel AI calls are averaged for stability. Scores are calculated using site-type-specific weights — an e-commerce site is graded differently than a blog or SaaS product.

Is there a free tier?

Yes. The Free Audit provides a basic SEO, AEO, and GEO score with domain health analysis. Pro Audit, Deep Scan, and Competitive Intel require credits, which start at $20 for 200 credits.

How many credits does each scan cost?

Pro Audit costs 10 credits per scan. Deep Scan costs 10 credits plus 1 credit per page crawled. Competitive Intel costs 20 credits per comparison.

What platforms does Duelly detect?

Duelly automatically detects WordPress, Shopify, Wix, Squarespace, Webflow, Next.js, Gatsby, Hugo, and many other platforms. When a platform is detected, all fix instructions are tailored to that specific platform — referencing actual admin paths, plugins, and configuration files.