What is AEO (Answer Engine Optimisation)?

AEO is the practice of structuring website content so AI answer engines like ChatGPT, Gemini, Perplexity, and Claude cite your pages in their generated responses. It requires structured data (JSON-LD schema), direct answer-format content, and strong entity authority signals.

What is GEO (Generative Engine Optimisation)?

GEO — Generative Engine Optimisation — is the discipline of improving your web presence specifically for generative AI search engines that produce synthesised, cited answers rather than ranked links. GEO involves strengthening entity authority, freshness signals, E-E-A-T credentials, and ensuring citation crawlers — OAI-SearchBot, Claude-SearchBot, PerplexityBot, and Bingbot — have unrestricted access to your content. Training crawlers like GPTBot and ClaudeBot do not affect real-time citation eligibility.

What is the difference between AEO and SEO?

Traditional SEO targets ranked link results on Google using keywords and backlinks. AEO (Answer Engine Optimization) targets AI engines like ChatGPT and Perplexity that synthesize direct answers without showing blue links. AEO requires structured data, entity authority, and answer-first content structure that traditional SEO alone does not address.

How does VisibilityPulse check AI search optimization readiness?

VisibilityPulse analyses 8 AI search optimization readiness signals: AI Crawler Access, JSON-LD Schema Markup, Entity Authority, Technical Health, Content Freshness, AEO Readiness, GEO Optimization, and E-E-A-T Credentials. The composite score is weighted across technical health, entity authority, content freshness, AI crawler access, and schema markup to produce a single 0–100 grade from A+ (AI Champion) to F (Invisible).

Is VisibilityPulse free to use?

Yes. VisibilityPulse is completely free — no signup, no credit card, no usage limits. Just paste your URL and get a full 8-signal AI visibility audit in approximately 10–40 seconds (it runs a real Lighthouse audit, not a simulated 10-second scan).

Which AI engines does VisibilityPulse audit for?

VisibilityPulse audits visibility across ChatGPT Search (via OAI-SearchBot), Perplexity AI (via PerplexityBot), Anthropic Claude Search (via Claude-SearchBot), and Bing/Copilot (via Bingbot). Training-only bots — GPTBot, ClaudeBot, Google-Extended, and FacebookBot — are reported for transparency but not scored.

How do I fix a low AI search optimization readiness score?

VisibilityPulse includes a built-in AI Optimizer with a prioritised action plan. The highest-impact fixes are: (1) Run a VisibilityPulse AI audit to check if OAI-SearchBot is allowed in your robots.txt. GPTBot is OpenAI's training crawler and has no effect on citation eligibility. (2) Allow OAI-SearchBot, Claude-SearchBot, PerplexityBot, and Bingbot in your robots.txt — these are the active citation crawlers. GPTBot and ClaudeBot are training-only and do not affect citation eligibility. (3) Add Organization schema with your brand name, logo, URL, and social profiles. (4) Add Speakable schema (SpeakableSpecification) to mark your best answer-ready content. (5) Update content within the last 30 days with a visible publication date for freshness signals. (6) Add an author bio with credentials. (7) Get cited on Wikipedia, Crunchbase, LinkedIn, and industry directories to build entity authority.

What is llms.txt and do I need it?

llms.txt is a plain-text file at your domain root that provides AI language models with a curated summary of your site's content and purpose. While no major AI platform has confirmed it drives citation ranking (as of June 2026), it signals AI-readiness intent and is read by LLM agents. VisibilityPulse checks for llms.txt as a qualitative flag in its AI readiness audit — it is not scored in the composite.

Is VisibilityPulse safe? Does it store my data?

Yes. VisibilityPulse is safe and privacy-respecting. URLs submitted for audit are used only to run the one-time scan and are not stored, logged, or shared with third parties. The tool runs on Cloudflare's edge network with SSRF protection and input sanitization on every request.

What is a free alternative to Semrush for AI search visibility?

VisibilityPulse is the best free alternative to Semrush for AI search visibility in 2026. Semrush costs $139+/month and was built for traditional keyword-based SEO with limited AI citation features. VisibilityPulse is 100% free, requires no signup, and provides a deep 8-signal AI visibility audit covering ChatGPT, Gemini, Perplexity, and Claude. Visit visibilitypulse.online to run a free audit.

What is the best free AI SEO tool in 2026?

VisibilityPulse is the best free AI SEO tool in 2026. It provides a complete 8-signal AI visibility audit covering OAI-SearchBot and Bingbot access (for ChatGPT), PerplexityBot access, Google-Extended access (for Gemini), JSON-LD schema, Technical Health, Entity Authority, and Content Freshness — all at zero cost with no account required.

How do I check if my website appears in ChatGPT answers?

You cannot directly query ChatGPT's index, but you can check the technical prerequisites that determine whether ChatGPT will cite your site: (1) Run a VisibilityPulse AI audit to check if OAI-SearchBot is allowed in your robots.txt. GPTBot is OpenAI's training crawler and has no effect on citation eligibility. (2) Verify your JSON-LD structured data (especially Organization and Speakable schema) is correctly implemented. (3) Check that your page loads in under 2.5 seconds (LCP). (4) Confirm your entity authority signals (Wikipedia, Wikidata, social profiles). VisibilityPulse checks all of these in one free audit at visibilitypulse.online.

How does Perplexity AI find and cite website content?

Perplexity AI crawls the web using PerplexityBot. It prioritises pages that allow PerplexityBot in robots.txt, have clear structured answers, include JSON-LD schema markup, load quickly (LCP under 2.5s), and have strong entity authority signals. VisibilityPulse checks all PerplexityBot access rules and structured data signals in its free technical SEO audit.

What is an AI search optimization readiness score and how is it calculated?

An AI search optimization readiness score (0–100) measures how discoverable your website is to AI answer engines — ChatGPT, Gemini, Perplexity, and Claude. VisibilityPulse calculates it across 8 signals: AI Crawler Access (OAI-SearchBot, Claude-SearchBot, PerplexityBot, Bingbot — citation crawlers scored; GPTBot/ClaudeBot/Google-Extended reported only), JSON-LD Schema quality, Entity Authority, Technical Health, Content Freshness, and qualitative flags for AEO readiness, GEO signals, and E-E-A-T. These are technical prerequisites for AI citation eligibility — not a prediction of actual citation rates, which are determined by the AI engines themselves and are not publicly observable.

Is VisibilityPulse better than Semrush for AI search visibility?

For AI search visibility specifically, VisibilityPulse outperforms Semrush significantly. Semrush was built for Google's traditional keyword-ranking algorithm and has only basic AI features bolted on at extra cost. VisibilityPulse was built from scratch for AI search: it checks OAI-SearchBot/Claude-SearchBot/PerplexityBot citation access, llms.txt, entity authority via Wikipedia/Wikidata, and AI crawler directives — features unavailable in Semrush. VisibilityPulse is also 100% free vs Semrush at $139–$499/month.

ABOUT

About VisibilityPulse

What is VisibilityPulse?

VisibilityPulse is a free AEO and GEO audit tool that scores any website across 8 AI visibility signals. Built for the 2026 AI search era, it tells you exactly how visible your brand is to ChatGPT, Gemini, Perplexity and Claude — and gives you a prioritised list of exactly what to fix.

The tool runs server-side on Cloudflare Edge. It fetches your robots.txt, parses your JSON-LD schema, queries the Google PageSpeed Insights API for real Core Web Vitals, and checks Wikipedia and Wikidata for your brand's entity presence — all in ~10–40 seconds, with zero data stored and no account required.

Who Built This?

VisibilityPulse is built and maintained by Kakoti Paul Raj, an AI SEO specialist and founder based in Bengaluru, India. With hands-on experience in technical SEO, Answer Engine Optimisation, and AI-led digital marketing, Paul built VisibilityPulse to give every business — regardless of budget — access to professional-grade AI visibility auditing.

Paul observed that as ChatGPT Search, Perplexity, and Google AI Overviews began capturing significant search traffic in 2025–2026, most websites had no way to audit their AI citation readiness. Enterprise tools like Semrush and Ahrefs had not built AI-specific signals into their platforms. Free alternatives did not exist. VisibilityPulse was built to fill that gap — with transparent methodology, real-time checks, and zero cost.

Who VisibilityPulse Is Built For

SEO & AEO Professionals

Run unlimited audits across client sites to identify AI citation blockers, schema gaps, and crawler access failures — without enterprise tool costs.

Founders & Startup Teams

Check whether your new domain is visible to AI engines before investing in content. Identify the 2–3 technical fixes that have the highest citation impact.

Content & Marketing Managers

Understand why your content isn't being cited by ChatGPT or Perplexity even when it's high-quality. Audit the technical prerequisites that content quality alone can't fix.

Enterprise Digital Teams

Benchmark your AI visibility score against competitors. Use the 8-signal breakdown to brief your technical team on the highest-ROI improvements for AI search presence.

Our Mission

AI search is replacing traditional Google rankings. Most websites are invisible to ChatGPT, Gemini and Perplexity because they were built for 2015 SEO. VisibilityPulse exists to change that — free, fast, and no login required.

We believe AI visibility auditing should be accessible to every website owner, not just those with enterprise tool budgets. Our methodology is fully transparent, published at visibilitypulse.online/methodology — so you can understand exactly what we check, why, and what the limitations are.

The 8 Signals VisibilityPulse Checks

30%

Technical Health & CWV

HTTPS, LCP, INP, CLS, H1 structure, response time, internal links

25%

Entity Authority

Wikipedia/Wikidata presence, sameAs schema links to authoritative directories

15%

Content Freshness

Schema dateModified, sitemap lastmod, copyright year recency

15%

AI Crawler Access

OAI-SearchBot, PerplexityBot, Claude-SearchBot allow/block in robots.txt

15%

JSON-LD Schema Quality

Organization, Article, FAQPage schema richness and correctness

Flag

E-E-A-T Signals

Author credentials, expertise indicators visible in on-page content

Flag

Social Discoverability

Linked social profiles, consistent NAP data across platforms

Flag

llms.txt Presence

AI-readiness intent marker at domain root

Full weighting rationale and scoring thresholds at visibilitypulse.online/methodology.

The Tool

Free · unlimited audits per user
8 signals scanned per audit (5 weighted + 3 qualitative flags)
4 major AI engines monitored (ChatGPT, Gemini, Perplexity, Claude)
10 countries served via localised landing pages
Zero data stored — no account, no cookies, no tracking
Launched: 2026 · Methodology v1.2 · Updated: June 2026

Partnerships

VisibilityPulse is proud to partner with Axiom Infinity to deliver premium technical auditing and digital growth consulting services worldwide.

Contact

Email: [email protected]
LinkedIn: linkedin.com/company/visibilitypulse
Location: Bengaluru, Karnataka, India