Optimize content for AI Overviews (formerly SGE), ChatGPT web search, Perplexity, and other AI-powered search experiences. Generative Engine Optimization (GEO) analysis including brand mention signals, AI crawler accessibility, llms.txt compliance, passage-level citability scoring, and platform-specific optimization. Use when user says "AI Overviews", "SGE", "GEO", "AI search", "LLM optimization", "Perplexity", "AI citations", "ChatGPT search", or "AI visibility".
| Metric | Value | Source | |--------|-------|--------| | AI Overviews reach | 1.5 billion users/month across 200+ countries | Google | | AI Overviews query coverage | 50%+ of all queries | Industry data | | AI-referred sessions growth | 527% (Jan-May 2025) | SparkToro | | ChatGPT weekly active users | 900 million | OpenAI | | Perplexity monthly queries | 500+ million | Perplexity |
Brand mentions correlate 3× more strongly with AI visibility than backlinks. (Ahrefs December 2025 study of 75,000 brands)
| Signal | Correlation with AI Citations | |--------|------------------------------| | YouTube mentions | ~0.737 (strongest) | | Reddit mentions | High | | Wikipedia presence | High | | LinkedIn presence | Moderate | | Domain Rating (backlinks) | ~0.266 (weak) |
Only 11% of domains are cited by both ChatGPT and Google AI Overviews for the same query — platform-specific optimization is essential.
Optimal passage length: 134-167 words for AI citation.
Strong signals:
Weak signals:
92% of AI Overview citations come from top-10 ranking pages, but 47% come from pages ranking below position 5 — demonstrating different selection logic.
Strong signals:
Weak signals:
Content with multi-modal elements sees 156% higher selection rates.
Check for:
Strong signals:
Weak signals:
AI crawlers do NOT execute JavaScript — server-side rendering is critical.
Check for:
Check robots.txt for these AI crawlers:
| Crawler | Owner | Purpose | |---------|-------|---------| | GPTBot | OpenAI | ChatGPT web search | | OAI-SearchBot | OpenAI | OpenAI search features | | ChatGPT-User | OpenAI | ChatGPT browsing | | ClaudeBot | Anthropic | Claude web features | | PerplexityBot | Perplexity | Perplexity AI search | | CCBot | Common Crawl | Training data (often blocked) | | anthropic-ai | Anthropic | Claude training | | Bytespider | ByteDance | TikTok/Douyin AI | | cohere-ai | Cohere | Cohere models |
Recommendation: Allow GPTBot, OAI-SearchBot, ClaudeBot, PerplexityBot for AI search visibility. Block CCBot and training crawlers if desired.
The emerging llms.txt standard provides AI crawlers with structured content guidance.
Location: /llms.txt (root of domain)
Format:
# Title of site
> Brief description
## Main sections
- [Page title](url): Description
- [Another page](url): Description
## Optional: Key facts
- Fact 1
- Fact 2
Check for:
/llms.txtNew standard (December 2025) for machine-readable AI licensing terms.
Backed by: Reddit, Yahoo, Medium, Quora, Cloudflare, Akamai, Creative Commons
Check for: RSL implementation and appropriate licensing terms.
| Platform | Key Citation Sources | Optimization Focus | |----------|---------------------|-------------------| | Google AI Overviews | Top-10 ranking pages (92%) | Traditional SEO + passage optimization | | ChatGPT | Wikipedia (47.9%), Reddit (11.3%) | Entity presence, authoritative sources | | Perplexity | Reddit (46.7%), Wikipedia | Community validation, discussions | | Bing Copilot | Bing index, authoritative sites | Bing SEO, IndexNow |
Generate GEO-ANALYSIS.md with:
/llms.txt fileCategory:business