# Geoptimizer > Geoptimizer is a Generative Engine Optimization (GEO) platform that measures how visible a brand is in AI-generated answers across ChatGPT, Gemini, Claude, and Grok — one transparent 0–100 Visibility Score computed with a fully published formula, refreshed on demand in real time. ## Product - [Home](https://www.geoptimizer.io/): what Geoptimizer measures and how it works - [Pricing](https://www.geoptimizer.io/pricing): all 4 AI engines in every plan, free tier included, paid plans from $19/month; paid plans re-check every tracked prompt weekly on all 4 engines, the free tier scans on demand - [Methodology](https://www.geoptimizer.io/methodology): the complete published scoring formula — EngineScore = 100 × (0.35 · mention rate + 0.25 · citation rate + 0.20 · prominence + 0.20 · sentiment), averaged across engines — versioned and auditable - [Facts](https://www.geoptimizer.io/facts): canonical, dated brand facts — name, category, pricing, plan names, and what Geoptimizer does not offer - [GEO glossary](https://www.geoptimizer.io/glossary): plain-English definitions of AI-visibility vocabulary (mention rate, citation rate, ghost citations, grounding, llms.txt, confidence bands) ## Free tools - [AI Visibility Check](https://www.geoptimizer.io/tools/ai-visibility-check): live check of whether ChatGPT, Gemini, Claude, and Grok mention a brand - [GEO Site Audit](https://www.geoptimizer.io/tools/geo-audit): instant page audit for AI crawler access, llms.txt, rendering, structured data, and content shape - [AI Crawler Checker](https://www.geoptimizer.io/tools/ai-crawler-checker): robots.txt and llms.txt analysis for 10 AI crawlers - [Prompt Ideas Generator](https://www.geoptimizer.io/tools/prompt-generator): 20 buyer-intent prompts for any domain ## Guides Practical writing on Generative Engine Optimization. Feed: https://www.geoptimizer.io/rss.xml - [Blog index](https://www.geoptimizer.io/blog): all posts - [Common-Word Brand Names and AI Mention False Positives](https://www.geoptimizer.io/blog/common-word-brand-ai-mention-false-positives): Substring matching inflates AI mention rates for brands like Pulse or Scout. Audit false positives with a precision check and get a score you can trust. - [Do Backlinks Matter for AI Citations? The 2026 Data](https://www.geoptimizer.io/blog/do-backlinks-matter-ai-citations): Do backlinks matter for AI citations? The 2026 correlation data says yes — as a threshold, not a driver. Here's what outranks them and where to spend. - [AI Citation Sources: The 68% Concentration Problem](https://www.geoptimizer.io/blog/ai-citation-sources-concentration): Do 15 domains really supply 68% of AI answers? We audit the AI citation sources data engine by engine — and show which share you can actually earn. - [ChatGPT Memory Personalization Breaks AI Visibility Checks](https://www.geoptimizer.io/blog/chatgpt-memory-personalization-ai-visibility): ChatGPT memory personalization means two buyers see different brands. Why AI visibility must be measured as a distribution, not a single screenshot. - [Zero-Click AI Answers: Measuring Visibility Without Traffic](https://www.geoptimizer.io/blog/zero-click-ai-answers-measuring-visibility): 68% of US Google searches end without a click. How to measure zero-click AI answers, rebuild your organic report, and defend visibility when traffic is flat. - [AI Visibility by Country and Language: Measure Per Market](https://www.geoptimizer.io/blog/ai-visibility-by-country-and-language): A global AI visibility score is usually a US score in disguise. How to measure AI visibility by country and language with market-specific prompt sets. - [YouTube AI Citations: Get Your Videos Into AI Answers](https://www.geoptimizer.io/blog/youtube-ai-citations): YouTube AI citations split hard by engine: 29.5% of Google AI Overviews, 0.2% of ChatGPT. The transcript and chapter fixes that get videos cited. - [AI Crawler Log Analysis: Crawl Volume Isn't Citations](https://www.geoptimizer.io/blog/ai-crawler-log-analysis): GPTBot can crawl 4,000 pages and cite none. An AI crawler log analysis guide: what each bot proves, why volume misleads, and where citations show up. - [How Grok Chooses Its Sources: The X Citation Channel](https://www.geoptimizer.io/blog/how-grok-chooses-sources-x): How does Grok choose its sources? It runs a separate X search tool no other engine can reach — here's the mechanism, the honest numbers, and the fix. - [AI Referral Traffic Conversion Rate: Is It Really 4.4x?](https://www.geoptimizer.io/blog/ai-referral-traffic-conversion-rate): The 4.4x AI referral traffic conversion rate is Semrush's figure, not Adobe's. Here is what seven studies measured, and where the GEO budget should go. - [How to Earn Reddit AI Citations Without Gaming It](https://www.geoptimizer.io/blog/reddit-ai-citations): Reddit AI citations are engine-specific and easy to fake badly. Here is what the 2026 data shows about subreddits, threads, cadence, and measurement. - [Opt Out of AI Overviews Without Losing Rankings](https://www.geoptimizer.io/blog/opt-out-ai-overviews-without-losing-rankings): Google's Search Console controls let you opt out of AI Overviews without losing rankings — but only one lever is ranking-neutral. A plain reading of each. - [Generative AI Optimization: What the Evidence Shows](https://www.geoptimizer.io/blog/generative-ai-optimization): Generative AI optimization in 2026: the tactics with real evidence, the ones that measured as zero, and how to track brand visibility across four engines. - [ChatGPT Ads and Organic AI Visibility: Measure Both](https://www.geoptimizer.io/blog/chatgpt-ads-organic-ai-visibility): ChatGPT ads reached 51% of US replies. Here is what that does to organic AI visibility — and how to measure the paid and cited layers separately. - [ChatGPT Describes Your Brand Wrong: How to Fix It](https://www.geoptimizer.io/blog/chatgpt-describes-your-brand-wrong): ChatGPT gives wrong information about my brand? Diagnose whether it is model memory or a stale cited page, then repair old pricing, names and framing. - [Generative AI Optimization for B2B SaaS: A 90-Day Plan](https://www.geoptimizer.io/blog/generative-ai-optimization-90-day-plan-b2b-saas): A 90-day implementation framework that takes B2B SaaS brands from baseline to 40%+ citation rates across ChatGPT, Gemini, Claude, and Grok. - [Gemini vs AI Overviews vs AI Mode: What to Track](https://www.geoptimizer.io/blog/gemini-vs-ai-overviews-vs-ai-mode): Gemini, AI Overviews and AI Mode cite the same URLs only 13.7% of the time. Here is which Google AI surface to track, and how to measure each one. - [How to Get Into the Best Tools Lists AI Engines Cite](https://www.geoptimizer.io/blog/best-tools-lists-ai-engines-cite): ChatGPT cites a recommended tool's own site just 11.6% of the time. Here's how to get listed in the best tools lists AI engines actually cite. - [AI Visibility vs AI Traffic: Connect Your Score to GA4](https://www.geoptimizer.io/blog/ai-visibility-vs-ai-traffic-ga4): A visibility score and a GA4 report answer different questions. Here's how to instrument both and recover the AI traffic GA4 files as Direct. - [How to Choose the 25 Prompts You Track for AI Visibility](https://www.geoptimizer.io/blog/how-to-choose-prompts-to-track): Your AI visibility score is only as good as your prompt set. A repeatable method for choosing which prompts to track, mapped to a funnel not a keyword list. - [llms.txt and AI Crawler Access: The 20-Minute Setup](https://www.geoptimizer.io/blog/llms-txt-ai-crawler-access-20-minute-setup): Google says skip llms.txt. Chrome now audits it. Here's the 20-minute technical GEO setup, in evidence order: crawler access first, llms.txt last. - [Competitive AI Visibility Analysis: Share of Answers](https://www.geoptimizer.io/blog/competitive-ai-visibility-analysis): A competitive AI visibility analysis method: measure share of answers per engine, size the margin of error, and find the sources winning rivals' slots. - [AI Visibility Score: The Evidence Behind Our Formula](https://www.geoptimizer.io/blog/ai-visibility-score-formula-evidence): Our AI visibility score weights mentions, citations, prominence and sentiment. Here is the published formula and the research behind each weight. - [Get Cited by AI: The 2026 Evidence, Engine by Engine](https://www.geoptimizer.io/blog/get-cited-by-ai-2026-evidence): What actually gets you cited by AI in 2026: per-engine citation data for ChatGPT, Gemini, Claude and Grok, plus the tactics the evidence says do nothing. - [What Is Generative Engine Optimization? A 2026 Definition](https://www.geoptimizer.io/blog/what-is-generative-engine-optimization): Generative engine optimization, defined without the hype: what GEO actually is in 2026, what the research proves, and how to measure it honestly. - [Did a New Model Version Change Your AI Visibility?](https://www.geoptimizer.io/blog/new-model-version-ai-visibility): GPT-5.6, Grok 4.5 and three more frontier releases landed in 25 days. How to tell whether a new model version changed your AI visibility, or it is noise. - [Cloudflare's Sept 15 AI Crawler Rules: Who to Let In](https://www.geoptimizer.io/blog/cloudflare-ai-crawler-rules-september-15): Cloudflare's September 15 AI crawler defaults are changing. A bot-by-bot framework for protecting your content without deleting yourself from AI answers. - [Why AI Visibility Tools Give You Different Scores](https://www.geoptimizer.io/blog/why-ai-visibility-tools-give-different-scores): Two AI visibility tools, two different scores. Here is why AI visibility tools disagree, plus a 7-question audit to decide which number to trust. - [How we score AI visibility](https://www.geoptimizer.io/methodology): the published, versioned scoring formula — mention rate, citation rate, prominence, sentiment