# RankZero guides to AI search optimization > Practical guides to getting a brand cited in ChatGPT, Perplexity, Claude, Gemini, and Google AI Overviews: crawlers, llms.txt, content, measurement, and share of voice. Start with the hub: [AI SEO guide](https://www.rankzero.io/guides/ai-seo). ## Pages - [Agentic SEO: What AI Agents Can Do and Who Answers for It](https://www.rankzero.io/guides/agentic-seo): Agentic SEO hands multi-step SEO work to AI agents that plan and act on their own. See what an SEO agent can do today, and what still needs a named person. ([markdown](https://www.rankzero.io/guides/agentic-seo.mdx)) - [AI Competitor Analysis: How to Track Competitor Visibility in AI Search](https://www.rankzero.io/guides/ai-competitor-analysis): Discover how to run AI competitor analysis across ChatGPT, Perplexity, and Google AI Overviews. Track citation share of voice, find gaps, and close them fast. ([markdown](https://www.rankzero.io/guides/ai-competitor-analysis.mdx)) - [AI Content Optimization: A Practical Guide for 2026](https://www.rankzero.io/guides/ai-content-optimization): AI content optimization means structuring content so ChatGPT, Perplexity, and Google AI Overviews cite it. Here's the 6-step framework that works in 2026. ([markdown](https://www.rankzero.io/guides/ai-content-optimization.mdx)) - [AI Crawlers: GPTBot, ClaudeBot, PerplexityBot, and Which to Allow (2026)](https://www.rankzero.io/guides/ai-crawlers): What GPTBot, ClaudeBot, PerplexityBot and seven more AI crawlers do, what blocking each one costs you, and the exact robots.txt token for every bot. ([markdown](https://www.rankzero.io/guides/ai-crawlers.mdx)) - [AI Search: The Complete Guide to Winning AI Visibility in 2026](https://www.rankzero.io/guides/ai-search): AI answers name only a handful of brands, and the choice is made before a buyer reaches your site. How AI search works, and 6 strategies to get your brand cited. ([markdown](https://www.rankzero.io/guides/ai-search.mdx)) - [AI Search Share of Voice: What It Is and How to Measure It](https://www.rankzero.io/guides/ai-search-share-of-voice): AI search share of voice measures how often your brand appears in AI-generated answers vs. competitors. Learn what it is, why it matters, and how to track it. ([markdown](https://www.rankzero.io/guides/ai-search-share-of-voice.mdx)) - [AI Search Tracking: How to Monitor Your Brand in AI Results (2026)](https://www.rankzero.io/guides/ai-search-tracking): AI search tracking monitors your brand citations across ChatGPT, Perplexity, and Google AI Overviews. Learn the 4-step setup and 4 metrics that matter. ([markdown](https://www.rankzero.io/guides/ai-search-tracking.mdx)) - [Automated SEO Optimization: What to Automate and What to Keep Human](https://www.rankzero.io/guides/automated-seo-optimization): Automated SEO optimization works for any task with one checkable answer: crawls, schema, monitoring, reporting. Here is where to draw the line, and why. ([markdown](https://www.rankzero.io/guides/automated-seo-optimization.mdx)) - [B2B AI Search Optimization: The Complete Guide (2026)](https://www.rankzero.io/guides/b2b-ai-search-optimization): B2B AI search optimization gets your brand cited when buyers ask AI which vendor to choose. Learn the 5-step framework that works for B2B teams in 2026. ([markdown](https://www.rankzero.io/guides/b2b-ai-search-optimization.mdx)) - [Best AI Search Tools in 2026: 8 AEO Tools Compared](https://www.rankzero.io/guides/best-ai-search-tools): The best AI search tools track how ChatGPT, Gemini, and Google's AI answers name your brand. Eight AEO tools compared on engines, pricing units, and fit. ([markdown](https://www.rankzero.io/guides/best-ai-search-tools.mdx)) - [ChatGPT SEO: How to Get Your Brand Cited in ChatGPT (2026 Guide)](https://www.rankzero.io/guides/chatgpt-seo): Learn how to get your brand cited in ChatGPT answers in 2026. 7 proven ChatGPT SEO strategies: Bing authority, FAQ schema, AI crawlers, and prompt tracking. ([markdown](https://www.rankzero.io/guides/chatgpt-seo.mdx)) - [ChatGPT Shopping: How It Picks Products and What Your Store Can Change (2026)](https://www.rankzero.io/guides/chatgpt-shopping): How ChatGPT Shopping picks products: merchant feeds, Shopify Catalog, third-party data, and your own pages. What changed in 2026 and what to fix this week. ([markdown](https://www.rankzero.io/guides/chatgpt-shopping.mdx)) - [ChatGPT vs Perplexity vs Claude: Which AI Search Engine Should Your SaaS Brand Prioritize?](https://www.rankzero.io/guides/chatgpt-vs-perplexity-vs-claude): ChatGPT vs Perplexity vs Claude for SaaS: how the three differ, which your buyers use, and how to prioritize AI search optimization without spreading thin. ([markdown](https://www.rankzero.io/guides/chatgpt-vs-perplexity-vs-claude.mdx)) - [Claude SEO: How to Get Your Brand Cited in Claude (2026 Guide)](https://www.rankzero.io/guides/claude-seo): How to get your brand cited in Anthropic's Claude in 2026. 6 Claude SEO strategies: llms.txt, machine-readable structure, accuracy over hype, and technical docs. ([markdown](https://www.rankzero.io/guides/claude-seo.mdx)) - [Enterprise Rank Tracker: 7 Platforms Compared (2026)](https://www.rankzero.io/guides/enterprise-rank-tracker): An enterprise rank tracker monitors rankings at scale behind SSO, an API, and audit logs. Compare 7 platforms, how each prices data, and how to test one. ([markdown](https://www.rankzero.io/guides/enterprise-rank-tracker.mdx)) - [Google AI Mode SEO: How to Get Your Brand Cited (2026 Guide)](https://www.rankzero.io/guides/google-ai-mode-seo): How Google AI Mode chooses the sources it cites, how it differs from AI Overviews, and the five things your brand can change to get cited in its answers. ([markdown](https://www.rankzero.io/guides/google-ai-mode-seo.mdx)) - [Google AI Overview SEO: How to Get Cited (2026 Guide)](https://www.rankzero.io/guides/google-ai-overview-seo): Google AI Overview SEO in six steps: what gets a page cited in an AI Overview, what Google's own guide says you can skip, and how to check whether it worked. ([markdown](https://www.rankzero.io/guides/google-ai-overview-seo.mdx)) - [How LLMs Choose Sources to Cite: What Each Engine Documents](https://www.rankzero.io/guides/how-llms-choose-sources): LLMs choose sources in five steps: decide to search, rewrite the query, retrieve, rerank, and cite. See what OpenAI, Google, and Perplexity document about each. ([markdown](https://www.rankzero.io/guides/how-llms-choose-sources.mdx)) - [How to Improve AI Search Visibility: 6 Strategies (2026)](https://www.rankzero.io/guides/improve-ai-search-visibility): Improve AI search visibility with extractable answers, valid schema, crawlable pages, and third-party citations. Six strategies, in priority order. ([markdown](https://www.rankzero.io/guides/improve-ai-search-visibility.mdx)) - [How to Create an llms.txt File: Format, Publishing, and Whether It Helps](https://www.rankzero.io/guides/llms-txt): How to write, publish and verify an llms.txt file, updated for spec v2, plus an honest read on what the file does and does not do for AI visibility. ([markdown](https://www.rankzero.io/guides/llms-txt.mdx)) - [Perplexity SEO: How to Get Your Brand Cited in Perplexity Answers (2026)](https://www.rankzero.io/guides/perplexity-seo): Learn how Perplexity SEO works and how to get your brand cited in Perplexity answers. Covers content structure, authority building, and technical setup. ([markdown](https://www.rankzero.io/guides/perplexity-seo.mdx)) - [SaaS AI SEO: How to Get Your Brand Mentioned in AI Search Answers](https://www.rankzero.io/guides/saas-ai-seo): AI answers name only a short list of software brands, and half of B2B buyers now start their research in an AI chatbot. 7 strategies to get yours cited. ([markdown](https://www.rankzero.io/guides/saas-ai-seo.mdx)) ## Optional - [Full site llms.txt](https://www.rankzero.io/llms.txt)