ChatGPT has over 200 million weekly active users. Perplexity is the fastest-growing search product in years. Both are being used by buyers to research products, evaluate vendors, and ask the kinds of questions they used to ask Google. If your brand doesn't appear in their answers, you're invisible to a large and growing share of your market. This guide explains how ChatGPT and Perplexity citations actually work — and the concrete steps you can take to appear in them.
How ChatGPT decides what to cite
ChatGPT's citations come from two distinct sources, and understanding both is critical:
Source 1 — Training data
ChatGPT's underlying language model was trained on a massive corpus of web content — weighted heavily toward high-authority sources. Brands that were mentioned frequently in authoritative publications, Wikipedia, Clutch, review platforms, and industry directories before the training cutoff are more likely to appear in ChatGPT answers. This is the "memory" ChatGPT has about your brand.
Source 2 — Web browsing (GPT-4o with browsing)
When web browsing is enabled, ChatGPT uses Bing's index to search the web in real time. This is more similar to traditional SEO — pages that rank well in Bing, have direct-answer content, and have strong domain authority are more likely to be cited in browsing-mode responses.
The implication: improving your ChatGPT visibility requires working on both. Third-party citations and brand authority for training data visibility, and Bing SEO + direct-answer content for browsing-mode visibility.
How Perplexity AI decides what to cite
Perplexity AI is simpler to understand than ChatGPT for optimization purposes: it uses Bing's index in real time and cites sources it finds in Bing search results for the query. Optimizing for Perplexity is therefore largely equivalent to Bing SEO + direct-answer content structure.
Key signals for Perplexity citation: strong Bing domain authority, pages that directly answer the question (not pages that explain a topic broadly), correct schema markup (Perplexity can parse structured data), and recent/fresh content (Perplexity weights recency more than some AI engines).
The 7 concrete steps to improve ChatGPT and Perplexity visibility
Step 1: Build your presence on platforms ChatGPT is trained on
ChatGPT's training data comes disproportionately from: Wikipedia and Wikidata, Clutch (agency and service reviews), G2 and Trustpilot (software and service reviews), BBB (US business credibility), LinkedIn company pages, Forbes, TechCrunch, and major industry publications, and authoritative directories in your vertical. Getting your brand onto these platforms — even just a basic listing — adds to the training data signals that make ChatGPT more likely to mention you.
Step 2: Implement Organization JSON-LD schema
Organization schema on your website tells ChatGPT and other AI engines exactly what your brand is, what it does, where it's located, what it's known for, and how to describe it. Without this, ChatGPT has to guess your brand description from whatever it can find. With Organization schema, you give it the instructions. Include: name, url, foundingDate, description, address, areaServed, knowsAbout, sameAs (links to your social profiles and directory listings), and award (any recognitions or certifications).
Step 3: Create a LLMs.txt file
LLMs.txt is a plain text file at your domain root (yourdomain.com/llms.txt) that gives AI language models explicit instructions about your brand. Think of it as a brand brief for AI. Include: what your company does, what products or services you offer, key facts about your brand (years in business, certifications, unique positioning), and what queries AI models should cite you for. This is one of the fastest-implemented and highest-impact GEO steps for ChatGPT visibility specifically.
Step 4: Create direct-answer AEO content
ChatGPT (in browsing mode) and Perplexity both prefer pages that answer questions directly and concisely. Create FAQ content on your key pages with FAQPage schema. Use question-format headings. Write answers that are 40–80 words — direct, factual, and self-contained. This is AEO (Answer Engine Optimization) — the content strategy that feeds AI citation visibility. Learn more on our AEO services page.
Step 5: Optimize for Bing (not just Google)
Perplexity uses Bing. ChatGPT's browsing mode uses Bing. Most SEO programs are Google-only. Submit your sitemap to Bing Webmaster Tools, check your Bing index coverage, and ensure your Bing rankings for key queries are competitive. Many brands discover significant Bing ranking gaps when they check for the first time.
Step 6: Get published in authoritative industry sources
A single article in a relevant industry publication does more for ChatGPT training data visibility than hundreds of low-authority blog mentions. Identify the 5–10 publications in your industry that are most likely to be in AI training data (industry journals, major trade publications, Forbes/Inc/TechCrunch for your sector) and pursue placements there. Guest articles, press releases for significant news, and expert commentary are all valid approaches.
Step 7: Measure your citation rate and iterate
Run a systematic monthly prompt test: 50 relevant queries across ChatGPT, Perplexity, and Google AI Overviews. Record which responses cite your brand. Calculate your brand mention rate (% of queries that return your brand). Track the trend month over month. Without measurement, you can't tell if your GEO investments are working. Seal Global's AI visibility reporting covers this as a standard deliverable.
How long does it take?
Realistic timelines: Schema and LLMs.txt changes — visible in Google Search Console within 1–2 weeks. Bing index improvements — 2–4 weeks. Perplexity citation improvements — 4–8 weeks. ChatGPT training data citation improvements — longer, as they depend on model update cycles (typically 3–6 months). Google AI Overviews — 30–60 days for new FAQPage-schema'd content.
The most important takeaway: start now. The compounding benefits of GEO investment begin accumulating from the first step.
Seal Global's approach
Seal Global implements all of these steps as a systematic program — not as one-off tactics. We test every strategy on Databazaar, our own IR500 ecommerce brand, before deploying it for clients. Our AI search optimization and GEO programs cover all 5 major AI engines with monthly visibility reporting.
Get your ChatGPT visibility audit
Want to know exactly where your brand appears in ChatGPT, Perplexity, and Google AI Overviews? Book a free AI visibility audit and we'll run your brand live through all major AI engines during the call.