# Erlin > Get discovered in AI search, create content buyers need, and turn inquiries into customers. Use Erlin with your team or let us manage the work. Erlin is a marketing platform with two products, AI Visibility and Lead Qualification, plus Erlin Select, a done-for-you service for businesses that want the work run for them. AI Visibility tracks six AI engines: ChatGPT, Perplexity, Claude, Google AI Mode, Gemini and Copilot. The site also publishes a blog on generative engine optimization and news on how AI search changes. ## Product - [AI Visibility](https://www.erlin.ai/ai-visibility): Track how ChatGPT, Perplexity, Claude, Google AI Mode, Gemini and Copilot answer the questions buyers ask, which brands they recommend, and which sources they cite. - [Opportunity & Action](https://www.erlin.ai/ai-visibility/opportunities): Content to improve, sources where your brand is missing and conversations worth joining, ranked by effort and impact and tracked to done in Action Center. - [AI Content](https://www.erlin.ai/ai-visibility/content-optimization): Research the questions customers ask AI and draft articles, guides and FAQs in your brand voice for your team to review. Publishes to WordPress and Webflow; other CMSs are coming soon. - [Lead Qualification (beta)](https://www.erlin.ai/lead-qualification): Answers inbound inquiries by email and website chat, qualifies them against your rules, and follows up by email and Telegram. - [AI Website Chatbot](https://www.erlin.ai/lead-qualification/ai-chatbot): A chatbot for your website that answers visitors, qualifies them against your goals and books the meeting while they are on your site. - [AI CRM & Analytics (beta)](https://www.erlin.ai/lead-qualification/ai-crm): Leads arrive with their source, grade and conversation filled in. Connects to an existing CRM such as HubSpot or Zoho CRM. - [Brand Memory](https://www.erlin.ai/brand-memory): Your facts, voice, rules and guardrails in one place, so everything Erlin writes or says stays accurate and on brand. - [Hey Erlin](https://www.erlin.ai/hey-erlin): An AI marketing assistant that answers questions about your visibility, content and leads, and sends alerts when something changes. - [SEO MCP Server](https://www.erlin.ai/seo-mcp-server): Your Erlin AI visibility and SEO data inside Claude. - [Integrations](https://www.erlin.ai/integrations): Google Analytics 4, Search Console, WordPress, Webflow, HubSpot, Zoho CRM, Google Sheets, Zapier, Slack and Claude. ## Pricing - [Pricing](https://www.erlin.ai/pricing): Plans from $47 a month, billed yearly: Starter, Standard, Pro and Enterprise, compared feature by feature. Lead Qualification (beta) is an add-on for every plan, priced on request during the beta. ## Service - [Erlin Select (done-for-you marketing)](https://www.erlin.ai/outsourced-marketing): A dedicated senior strategist runs your AI visibility, content and lead generation on the Erlin platform. By application, available to select brands. - [Law firm marketing](https://www.erlin.ai/industries/law-firm-marketing): Erlin Select for law firms: done-for-you AI search, content and intake. - [Ecommerce](https://www.erlin.ai/industries/ecommerce): Get your products recommended when shoppers ask AI. - [SaaS](https://www.erlin.ai/industries/saas): Get found by software buyers in AI search and qualify demo and trial inquiries. - [B2B services](https://www.erlin.ai/industries/b2b): Get found by the right buyers and turn inquiries into clients. - [Agencies](https://www.erlin.ai/teams/agencies): Track and grow your clients' AI visibility from one account. - [Content and SEO teams](https://www.erlin.ai/teams/content-seo): Content that gets found in AI search and brings qualified leads. - [Marketing and GTM teams](https://www.erlin.ai/teams/marketing-gtm): More buyers finding you, and inquiries turned into qualified opportunities. ## Blog Evergreen articles, maintained and revised in place. Each carries a quick answer written to be quoted, an FAQ, and its sources. ### GEO fundamentals What generative engine optimization is, how it differs from search engine optimization, and what is changing in how assistants choose which brands to name. - [GEO vs SEO: what's different in 2026 (and what isn't)](https://www.erlin.ai/blog/geo-vs-seo-in-2026): Google just said GEO and SEO are the same thing. That's half true. Here's what really separates them, why it matters, and which one to prioritize first. - [Generative engine optimization trends for 2026](https://www.erlin.ai/blog/generative-engine-optimization-trends): 7 GEO trends reshaping AI search visibility in 2026, with data on citations, structured data, and what actually drives brand coverage. - [The real cost of ignoring AI search in 2026](https://www.erlin.ai/blog/cost-of-ignoring-ai-search): AI search converts 5x better than organic. Brands not cited are losing pipeline they can't see. Here's the data on what AI invisibility actually costs in 2026 - [AI SEO optimization: your complete guide for 2026](https://www.erlin.ai/blog/ai-seo-optimization): AI SEO optimization gets your brand cited in AI-generated answers. This 2026 guide covers structure, structured data, source authority, and citation tracking. - [5 proven answer engine optimization strategies (2026)](https://www.erlin.ai/blog/answer-engine-optimization-strategies): AEO strategies that get your brand cited by ChatGPT, Perplexity, and Gemini. Backed by data from 500+ tracked brands. Start with an AI visibility audit. - [LLM SEO: a complete guide](https://www.erlin.ai/blog/llm-seo): LLM SEO gets your brand cited in AI answers. Learn the 4 citation drivers, content tactics, and measurement framework that work in 2026. - [GEO vs AEO: key differences, strategy & optimization guide](https://www.erlin.ai/blog/geo-vs-aeo): GEO and AEO aren't the same strategy. The real differences, when to use each, and how to implement both, backed by data from 500+ brands. - [AEO meaning: what answer engine optimization is & why it matters in 2026](https://www.erlin.ai/blog/aeo-meaning): AEO, or Answer Engine Optimization, is the practice of structuring content so AI platforms like ChatGPT and Perplexity cite it. What it means and how to start. - [GEO vs SEO vs AEO: key differences and strategies](https://www.erlin.ai/blog/geo-vs-seo-vs-aeo): GEO vs SEO vs AEO: learn the key differences, how each works in 2026, and how to build a strategy that covers all three channels. - [LLM brand visibility: how to track and improve what AI says about you (2026)](https://www.erlin.ai/blog/llm-brand-visibility): LLM brand visibility measures how AI cites your brand across ChatGPT, Perplexity, and Gemini. The four citation drivers and how to track and improve yours. - [AI visibility ROI: how to build the business case for your CMO](https://www.erlin.ai/blog/ai-visibility-roi): A practical guide to AI visibility ROI: the calculation formula, the metrics that matter, and how to build a business case leadership will fund. - [AI visibility score: what is it & how to check yours](https://www.erlin.ai/blog/ai-visibility-score): An AI visibility score tracks how often your brand appears in ChatGPT, Perplexity, and Gemini answers. How it's calculated, what affects it, and how to check. - [The AI visibility ladder: where does your brand stand in 2026?](https://www.erlin.ai/blog/ai-visibility): AI visibility is measurable, but 67% of marketing leaders don't know how. Here's what to track, how to benchmark it, and where you're losing ground. - [What is AI visibility? A guide to brand reach in AI search](https://www.erlin.ai/blog/what-is-ai-visibility): AI visibility measures how often your brand appears in AI-generated answers. How citations work, how to see where you stand, and 9 strategies to improve. - [Complete guide to GEO foundations](https://www.erlin.ai/blog/geo-foundations-guide): A guide to GEO fundamentals for AI-powered search: llm.txt, schema markup, site structure, and the content practices that get your brand cited. - [How AI engines actually choose which brands to cite: analysis of 15,000+ sessions](https://www.erlin.ai/blog/how-ai-engines-choose-brands-to-cite): We analyzed 15,000+ AI search sessions to understand exactly how ChatGPT, Perplexity, and other engines choose which brands to cite. Data-driven insights. - [What is answer engine optimization? The guide to win AEO in 2026](https://www.erlin.ai/blog/what-is-answer-engine-optimisation-the-guide-to-win-aeo-in-2026): Master Answer Engine Optimization (AEO) to get cited by ChatGPT, Perplexity, and Google AI. Learn the 5 pillars that drive 2-3× higher conversion rates. - [What is brand context and how it drives AI visibility](https://www.erlin.ai/blog/brand-context-ai-visibility): Brand context drives AI visibility. Learn how to structure your content so ChatGPT, Perplexity, and Google SGE surface your brand in shopping results. - [What signals influence brand visibility in AI search](https://www.erlin.ai/blog/brand-visibility-ai-search-ranking-signals): Brand visibility in LLMs like ChatGPT and Perplexity depends on structured signals. Which brand elements drive AI citations, and how to strengthen them. ### GEO in practice The audits, checklists and practices that move a brand from absent to cited across ChatGPT, Perplexity, Gemini and Claude. - [15 generative engine optimization best practices backed by latest research](https://www.erlin.ai/blog/generative-engine-optimization-best-practices): Generative engine optimization best practices backed by 2026 research. 15 tactics to get your brand cited by ChatGPT, Perplexity, and Google AI Overviews. - [Generative engine optimization checklist for SEO teams](https://www.erlin.ai/blog/generative-engine-optimization-checklist): A generative engine optimization checklist for SEO teams: technical, structural, and measurement steps with ownership tags and a 30-60-90 sequence. - [The complete AEO audit checklist for AI search visibility (2026)](https://www.erlin.ai/blog/aeo-audit-checklist): The 2026 AEO audit checklist for AI search visibility: 9 sections, prioritized fixes, and benchmark data from 500+ brands tracked across major AI platforms. - [Best GEO tools for ecommerce in 2026 (compared)](https://www.erlin.ai/blog/best-generative-engine-optimization-tools-ecommerce): Compare the best generative engine optimization tools for ecommerce. See which platforms track AI citations, optimize product data, and drive conversions. - [How to track brand visibility in AI search (2026 guide)](https://www.erlin.ai/blog/how-to-track-brand-visibility-in-ai-search): Track your brand across ChatGPT, Perplexity, and Gemini with the right metrics, prompt set, and audit process. Erlin data from 500+ brands inside. - [Brand monitoring in the AI era (2026 guide)](https://www.erlin.ai/blog/brand-monitoring): Brand monitoring now means tracking what AI says about you. Here's what changed in 2026, and what to do about it. - [7 best AI optimization tools in 2026 (reviewed)](https://www.erlin.ai/blog/ai-optimization-tools): The 7 best AI optimization tools in 2026, reviewed by platform coverage, optimization depth, and value. Erlin, Profound, SE Ranking, Peec AI, and more compared. - [How to get cited by AI: a simple guide (2026)](https://www.erlin.ai/blog/how-to-get-cited-by-ai): 50% of brands have less than 35% AI citation coverage. What the other 50% do differently, with data from 500+ brands across ChatGPT, Perplexity, and Gemini. - [Generative engine optimization for ecommerce (2026 guide)](https://www.erlin.ai/blog/generative-engine-optimization-ecommerce): AI traffic to US retail sites grew 693% in 2025. Here's how to structure your products, content, and brand signals to get recommended by ChatGPT and Perplexity. - [5 best AI search monitoring tools in 2026 (reviewed)](https://www.erlin.ai/blog/ai-search-monitoring-tools): The 5 best AI search monitoring tools in 2026 reviewed: Erlin, Profound, Peec AI, Otterly AI, and SE Ranking. Features, pricing, and who each tool is built for. - [Our top 6 LLM tracking tools in 2026 (reviewed)](https://www.erlin.ai/blog/llm-tracking-tools): Five LLM tracking tools reviewed for 2026: Erlin, Profound, Scrunch, Peec AI, and Otterly. Features, pricing, and which one fits your team. - [How to optimize content for AI search engines (2026)](https://www.erlin.ai/blog/how-to-optimize-content-for-ai-search-engines): How to optimize content for AI search engines, step by step: fact density, structured data, FAQ schema, and content freshness, backed by 500+ brands. - [AEO best practices in 2026: what 500 brands’ data reveals](https://www.erlin.ai/blog/aeo-best-practices): The AEO best practices that drive AI citations, backed by Erlin data from 500+ brands: fact density, structured data, third-party validation, and freshness. - [AI brand visibility tracking: a complete guide (2026)](https://www.erlin.ai/blog/ai-brand-visibility-tracking): AI brand visibility tracking measures how often and how accurately your brand appears in AI answers. The four drivers, the key metrics, and how to start. - [How to improve AI search visibility (2026 guide)](https://www.erlin.ai/blog/how-to-improve-ai-search-visibility): How to improve AI search visibility, step by step: fact density, structured data, third-party validation, and content freshness, backed by 500+ brands. - [Why you should track AI brand visibility in 2026](https://www.erlin.ai/blog/why-you-should-track-ai-brand-visibility): AI now drives purchase decisions for 44% of buyers. What the data says about brands that track AI visibility versus those that don't, and what's at stake. - [How to fix low AI visibility for your brand (step-by-step)](https://www.erlin.ai/blog/how-to-fix-low-ai-visibility): Learn how to fix low AI visibility for your brand with this step-by-step guide, with data from 500+ brands and a real case study. - [How to track AI visibility (2026 guide)](https://www.erlin.ai/blog/how-to-track-ai-visibility): Learn how to track AI visibility across ChatGPT, Perplexity, Gemini, and Claude. Covers key metrics and how to set up tracking in 5 simple steps. - [How to monitor AI search visibility (2026)](https://www.erlin.ai/blog/how-to-monitor-ai-search-visibility): Learn how to monitor AI search visibility across ChatGPT, Perplexity, and Gemini: key metrics, manual methods, automated tools, and how to interpret your data. - [Schema for AI visibility: a complete guide (2026)](https://www.erlin.ai/blog/schema-markup-ai-visibility): Schema for AI visibility: 7 schema types that improve citation rates, how ChatGPT and Perplexity use structured data, common mistakes, and testing. - [Common AI brand visibility mistakes (& how to fix each)](https://www.erlin.ai/blog/ai-brand-visibility-mistakes): AI brand visibility mistakes are easy to miss and expensive to ignore. Here are the 7 most common ones, and exactly how to fix them. - [AI brand misrepresentation: causes, real examples & how to fix it](https://www.erlin.ai/blog/ai-brand-misrepresentation): Is AI misrepresenting your brand to high-intent buyers? Learn the causes, real examples, and a practical fix for AI brand misrepresentation. - [Our top 8 tools for tracking LLM brand visibility in 2026](https://www.erlin.ai/blog/tools-for-tracking-llm-brand-visibility): Side-by-side review of the 8 best tools for tracking LLM brand visibility in 2026: pricing, LLM coverage, key features, and which teams each one is built for. - [10 best AI brand monitoring tools in 2026 (reviewed)](https://www.erlin.ai/blog/best-ai-brand-monitoring-tools): We reviewed the top 10 AI brand monitoring tools for 2026. Find the right fit for your team size, budget, and goals. - [AI citation optimization: how to get cited by AI in 2026](https://www.erlin.ai/blog/ai-citation-optimization): AI citation optimization determines whether ChatGPT, Perplexity, and Gemini name your brand in their answers. Here's the data-backed playbook from 500+ brands. - [AI visibility audit: how to run one yourself (and when you need a tool)](https://www.erlin.ai/blog/ai-visibility-audit): Step-by-step guide to running an AI visibility audit yourself: what to check, how to read the results, and when to bring in a tool. - [AI visibility checklist: 20 critical areas to audit (2026)](https://www.erlin.ai/blog/ai-visibility-checklist): A practical AI visibility checklist with scoring + audit steps. Find out why competitors show up in AI answers, and you don’t. - [AI visibility gap analysis with free tools: a step-by-step guide](https://www.erlin.ai/blog/ai-visibility-gap-analysis): Most brands only discover AI visibility gaps by accident. This guide helps you find yours on purpose, before it costs you. - [7 best AI visibility tools in 2026 (review & comparison)](https://www.erlin.ai/blog/ai-visibility-tools): We evaluated 7 AI visibility tools so you don't have to. Find the right platform for your budget, team size, and whether you need monitoring or execution. - [AI visibility analytics: the metrics for AI search success (2026)](https://www.erlin.ai/blog/ai-visibility-analytics): AI visibility analytics tracks where your brand appears in ChatGPT, Perplexity, and Gemini answers. The metrics that matter and how to act on them in 2026. - [How to write product descriptions that LLMs can understand](https://www.erlin.ai/blog/ai-readable-product-pages): AI platforms like ChatGPT and Perplexity cite product pages with structured, machine-readable descriptions. Learn how to write PDPs that AI can extract. - [How schema impacts your brand's visibility in AI search](https://www.erlin.ai/blog/schema-markup-ai-visibility-chatgpt-perplexity): Schema markup shapes product inclusion and brand visibility in ChatGPT and Perplexity. Which schema types matter most and how AI platforms read them. - [How answer engine optimization changes ecommerce search](https://www.erlin.ai/blog/answer-engine-optimization-ecommerce-search): What Answer Engine Optimization (AEO) means for ecommerce. Based on brand audits, we break down the core pillars that improve AI search visibility. ### AI search platforms How individual assistants retrieve, rank and cite sources, and what that means for the pages you publish for each of them. - [11 ChatGPT prompts for product descriptions that convert](https://www.erlin.ai/blog/chatgpt-prompts-for-product-descriptions): 11 ChatGPT prompts for product descriptions built for conversion and AI search citation, with frameworks, structured outputs, and AI visibility tactics. - [ChatGPT search SEO explained: strategies that actually work](https://www.erlin.ai/blog/chatgpt-search-seo): ChatGPT drives 91% of AI search traffic. Learn the four signals that determine citation and the technical steps to get your brand included. - [ChatGPT SEO workflows: scale content & rankings (2026)](https://www.erlin.ai/blog/chatgpt-seo-workflows): The ChatGPT SEO workflows that scale to 8+ pieces per week: keyword clustering, brief generation, technical SEO, and content refresh with quality controls. - [ChatGPT prompts for ecommerce: the operator's playbook](https://www.erlin.ai/blog/ecommerce-chatgpt-prompts): Ready-to-use ChatGPT prompts for ecommerce: product copy, email flows, customer service, SEO, and operations. Built on the 4-part prompt anatomy. - [12 ChatGPT SEO hacks to boost rankings in 2026](https://www.erlin.ai/blog/chatgpt-seo-hacks): 12 actionable ChatGPT SEO hacks with exact prompts. Build topic clusters, generate schema, map intent, and optimize for AI search in 2026 - [ChatGPT for retail: complete guide for retail professionals](https://www.erlin.ai/blog/chatgpt-for-retail): How retail professionals use ChatGPT for product discovery, marketing, customer service, and inventory, plus how to get your products recommended by AI. - [Gemini SEO: how to rank on Google Gemini (2026)](https://www.erlin.ai/blog/gemini-seo): Gemini SEO is about being cited, not just ranked. The content structure, schema, and topical authority tactics that get your content into Gemini's answers. - [How to get mentioned by ChatGPT (2026 guide)](https://www.erlin.ai/blog/how-to-get-mentioned-by-chatgpt): 6 data-backed steps to get your brand cited by ChatGPT, based on Erlin's analysis of 500+ brands and 2026 citation research, from schema to source building. - [Perplexity SEO: a complete guide to getting cited in 2026](https://www.erlin.ai/blog/perplexity-seo): How Perplexity selects sources, the 6 ranking factors driving citations, and a complete optimization checklist for brands in 2026. Data-backed, 500+ brands. - [Claude SEO: how to get cited by Claude AI (2026 guide)](https://www.erlin.ai/blog/claude-seo): Claude cites fewer sources but with more prominence. Here's how the retrieval works, what technical signals matter, and how to get your brand cited in 2026. - [ChatGPT search optimization (2026 guide)](https://www.erlin.ai/blog/chatgpt-search-optimization): ChatGPT retrieves far more pages than it cites. This guide covers the exact factors that determine which brands get selected in 2026. - [ChatGPT shopping research: what it is & how retailers use it](https://www.erlin.ai/blog/chatgpt-shopping-research): ChatGPT shopping research launched in November 2025. How it works, what the conversion data shows, and what retailers need to do to appear in its results. - [How will ChatGPT affect SEO & content marketing in 2026?](https://www.erlin.ai/blog/how-will-chatgpt-affect-seo): ChatGPT is changing SEO, but not the way most predictions said. What the 2026 data shows about AI citation, content strategy, and what drives results. - [How to improve visibility in Google AI Overviews](https://www.erlin.ai/blog/how-to-improve-visibility-in-google-ai-overviews): Learn how to improve visibility in Google AI Overviews with actionable tactics, backed by data from 500+ brands. ### Content operations Planning, producing and automating content at the volume AI visibility requires, without losing the quality that earns a citation. - [AI for content planning & strategy: a complete guide](https://www.erlin.ai/blog/ai-for-content-planning): AI for content planning in 2026 means planning for AI search visibility, not just faster drafts. Five-layer workflow, what to automate, what stays human. - [10 best content automation platforms (reviewed)](https://www.erlin.ai/blog/content-automation-platforms): The 10 best content automation platforms compared for 2026, including tools for AI visibility, brand voice, SEO, and publishing workflows. - [7 best AI content strategy tools for SEO & content teams](https://www.erlin.ai/blog/ai-content-strategy-tools): Compare the 7 best AI content strategy tools in 2026. Find which tools cover AI visibility, brief generation, and real-time optimization for your team. - [How to build your AI brand voice (that sounds like you)](https://www.erlin.ai/blog/how-to-build-ai-brand-voice): How to build a brand voice AI search engines can learn and reproduce accurately: entity definition, structured data, prompt auditing, and consistency. - [What is content automation? A quick guide for marketers (2026)](https://www.erlin.ai/blog/content-automation): Content automation uses AI to handle repetitive tasks across your content lifecycle. Here's what it covers, what it can't do, and how to build it correctly. - [7 best SEO tools for B2B companies (reviewed & ranked)](https://www.erlin.ai/blog/best-seo-tools-b2b): The B2B SEO tools that actually move pipeline in 2026. Semrush, Ahrefs, Screaming Frog, Surfer, Clearscope, and Erlin, reviewed and ranked. - [8 best SaaS SEO tools to grow fast](https://www.erlin.ai/blog/saas-seo-tools): The 8 best SaaS SEO tools for 2026, from Ahrefs for backlinks to Erlin for AI visibility. See what each tool does, what it doesn't, and which fits your stage. - [8 best content optimization platforms in 2026 (reviewed)](https://www.erlin.ai/blog/content-optimization-platforms): The 8 best content optimization platforms for writers in 2026: Surfer, Clearscope, Frase, MarketMuse, Semrush, Scalenut, NeuronWriter, and Dashword. - [AI content optimization: your hands-on guide](https://www.erlin.ai/blog/ai-content-optimization): What AI content optimization actually means, which tools work, and the step-by-step process to get your brand cited in AI-generated answers. - [The complete guide to prompt engineering in 2026](https://www.erlin.ai/blog/the-complete-guide-to-prompt-engineering-in-2026): A 2026 guide to prompt engineering: essential techniques, platform strategies, content creation workflows, and how to measure what AI-created content earns. - [Common tone mistakes in E‑commerce content and their impact on AI visibility](https://www.erlin.ai/blog/ai-visibility-content-mistakes): Vague, hypey, or inconsistent tone make your DTC content invisible to ChatGPT, Perplexity, and Google AI Overviews. Here's how to fix it. - [What is a brand voice? Why it now impacts AI search visibility](https://www.erlin.ai/blog/brand-voice-ai-search-visibility): Your brand voice is now a search signal. How consistent tone, structure, and messaging help LLMs like ChatGPT and Perplexity recognize and cite your content. ## News Datelined reports on changes to AI search, each stating what happened and what it means for a brand's visibility. Newest first. - [AI is shortlisting plumbers before the phone rings](https://www.erlin.ai/news/ai-shortlisting-plumbers) (2026-10-06): Trade press is now telling plumbers to check what ChatGPT says about them. The data says they should: 45% of consumers use AI to find local businesses. - [An AI intake agent gets 77% of patients seen same day](https://www.erlin.ai/news/mgb-ai-intake-same-day) (2026-10-05): Mass General Brigham says its AI intake agent gets 77% of users to a physician the same day. It handles about 150 patients a day. - [Businesses with a website get 3.9x more ChatGPT picks](https://www.erlin.ai/news/local-website-chatgpt-recommendation-gap) (2026-10-04): A study of 139,294 Google Maps listings found ChatGPT names local businesses with a website 3.9x as often. For chiropractors the gap is 8.8x. - [AI Overviews now expand on their own, pushing links further down](https://www.erlin.ai/news/ai-overviews-expand-automatically) (2026-10-03): Google confirmed AI Overviews can expand automatically into a longer AI Mode-style answer, removing the Show More button for some queries. - [ChatGPT ads pass a $1B run rate in under 200 days](https://www.erlin.ai/news/chatgpt-ads-pass-one-billion) (2026-10-03): OpenAI says ChatGPT ads reached a $1 billion annualized run rate in under 200 days. Ads sit below the answer, and the slot is now open to any business. - [AI Overviews cut organic clicks 39.8%. Paid clicks did not move](https://www.erlin.ai/news/ai-overviews-click-loss-study) (2026-10-02): The first randomized field experiment on AI Overviews put the outbound organic click loss at 39.8%. Sponsored clicks and search frequency did not change. - [Doctors and California draw a line around medical AI](https://www.erlin.ai/news/physicians-california-medical-ai-line) (2026-10-02): Six physician groups said AI must not outrank clinical judgment, and California signed two laws to protect it. Meanwhile 40M people a day ask ChatGPT. - [California's AI law for lawyers: check your intake too](https://www.erlin.ai/news/california-sb-574-law-firm-intake) (2026-10-01): SB 574 makes California the first state to regulate lawyers' AI use by statute. Most coverage covers court filings. The intake desk needs a look too. - [126 million prompts later: only 36 brands are visible everywhere](https://www.erlin.ai/news/cross-platform-visibility-gap) (2026-10-01): Of 1,200+ brands Semrush tracked across 126 million prompts, only 36 stayed in the top 100 on every AI platform, every month. - [Google lets sites leave AI Overviews without leaving Search](https://www.erlin.ai/news/google-publisher-opt-out) (2026-09-30): A new Search Console control lets a site opt out of AI Overviews and AI Mode without leaving regular results. It reached every site on August 31, 2026. ## Reports Long-form research. Headline findings are published in full on each page, with sources; the complete document is behind an email form. - [State of AI Search 2026](https://www.erlin.ai/resources/state-of-ai-search-2026): How ChatGPT, Gemini, Claude and Perplexity choose which brands to name, what that does to traffic, and what separates the brands that get cited from the ones that do not. - 39.8%: AI Overviews reduce outbound organic clicks by 39.8%, while clicks on sponsored results and Google's own properties stay flat. (First randomized field experiment on AI Overviews, 2026) - 61% vs 25%: 61% of pages cited by ChatGPT carry structured data markup, against 25% of pages ranking in Google's top organic results. (AirOps analysis of 15,000+ cited URLs) - 36: Across 126 million prompts, only 36 brands hold consistent visibility across every major AI platform. Winning one tells you almost nothing about the others. (Semrush, 126m prompt study) ## Docs and changelog - [Docs index for models](https://www.erlin.ai/docs/llms.txt): every docs page, with a Markdown copy of each. - [Docs full text for models](https://www.erlin.ai/docs/llms-full.txt): every docs page as Markdown in one file. - [Documentation](https://www.erlin.ai/docs): how to set up Erlin, what each metric means, and how to connect your tools. - [Changelog](https://www.erlin.ai/changelog): release notes, one page per release. ## Feeds - [News RSS](https://www.erlin.ai/news/rss.xml) - [Blog RSS](https://www.erlin.ai/blog/rss.xml) - [Changelog RSS](https://www.erlin.ai/changelog/rss.xml) - [Sitemap](https://www.erlin.ai/sitemap.xml)