Not all AI systems work the same way. ChatGPT draws from training data and can't browse the web for new information. Claude has similar training-based knowledge but is known for more nuanced reasoning. Gemini is increasingly incorporating real-time web retrieval. Perplexity explicitly searches the web for every query and cites sources. Your optimisation strategy needs to work across all of them, which means understanding how each system evaluates and uses information from your site.
The good news is that optimisation for all of them overlaps significantly. You're not building for four completely different targets. You're building for clarity, authority, and accuracy, which all of them value. But there are specific tactics that will improve your visibility on each platform, and if you're serious about being discoverable in the AI era, you need to address all of them.
For ChatGPT (Training Data Prominence)
ChatGPT's knowledge comes from training data with a cutoff date. It doesn't browse the web. Your most recent blog post might not be in its training data yet. But information published widely across trusted sources over time does get incorporated. The key is ensuring your expertise and your business get mentioned in sources that were likely included in training data.
This means PR and media outreach. Get yourself featured in major publications that OpenAI likely used in training. Historical publications like industry journals, mainstream news outlets, and recognised authorities in your vertical were almost certainly included. Newer sources are less certain. Getting quoted in the Wall Street Journal or Forbes increases the likelihood that OpenAI's training data includes information about your business. Getting mentioned in a random blog probably doesn't.
It also means building a strong website that answers questions comprehensively and clearly. While ChatGPT won't fetch your site dynamically, if your content is good and gets referenced elsewhere, it contributes to the training data. Write the definitive guides in your space. Publish original research. Create resources that other publications reference. Those references, in aggregate, help ChatGPT learn about your expertise.
For Claude (Nuance and Depth)
Claude is known for reading carefully and understanding nuance. If you're being cited or mentioned in Claude's responses, it's often because Claude has good information about you and is integrating it thoughtfully into an answer. Claude benefits from the same training data as other models, but you can optimise for Claude specifically by creating content that demonstrates depth and nuance in your expertise.
Write long-form content that explores your expertise thoroughly. Claude performs well on detailed, context-rich content. If you publish a 2000-word guide on a complex topic in your industry, and that guide is comprehensive and accurate, Claude is more likely to reference it in its answers because Claude values thorough understanding. Short, superficial content doesn't serve Claude as well.
Documentation and technical depth matter. If you provide detailed information about your services, your process, your methodology, or your approach, Claude appreciates that depth. When Claude is recommending a service or a provider, it often looks for indicators of rigorous thinking. Content that demonstrates rigorous thinking will improve your Claude visibility.
For Gemini (Integrated Web Results)
Gemini is increasingly using real-time web search to enhance its answers. This is moving Gemini closer to Perplexity's model. For Gemini visibility, many of the same tactics that work for Perplexity start to apply. You want to show up in fresh, relevant search results. This means traditional SEO matters more for Gemini than it does for ChatGPT.
Ensure your site is fast, mobile-friendly, and technically sound. Implement proper schema markup. Create content that answers specific questions your customers ask. Optimise for the search terms that matter in your vertical. When Gemini searches the web to supplement its answer, if your site ranks well for those searches and has good schema markup, you're more likely to be included in the response.
Freshness matters for Gemini. Recent content that addresses current topics or recent developments will be favoured over old content. If you're creating timely, relevant content regularly, Gemini has more reasons to include you. This is the one AI platform where standard search marketing practices still apply meaningfully.
For Perplexity (Citation Authority)
Perplexity explicitly cites sources, and it prioritises sources with demonstrated authority. Every Perplexity answer includes links to the sources used. Being cited on Perplexity is the primary way you get traffic from that platform. For Perplexity visibility, focus on being recognised as an authoritative source in your space.
This means: published articles and research that stand up to scrutiny, mentions in reputable publications, social proof in the form of reviews and ratings, and consistency in your entity information across the web. Perplexity's algorithm is evaluating whether you're a credible source. Provide evidence that you are one. Get cited in publications. Build your reputation. Accumulate reviews. Make sure your information is consistent and up-to-date everywhere you appear online.
Technical SEO matters more for Perplexity than for training-data-based models. Fast load times, mobile responsiveness, proper indexing, and clean site structure all help Perplexity's system find and evaluate your content. If your site is slow or hard to crawl, Perplexity might not even consider you for citation. Make it easy for systems to find and evaluate your content.
Cross-Platform Best Practices
Some optimisations work across all platforms. Clear, accurate, well-structured content is valued by all of them. Original research and proprietary insights are valued by all of them. Consistency in your entity information across the web matters to all of them. Authority and reputation signals are valued by all of them.
Your website should be fast and mobile-friendly. It should have proper schema markup. It should be secure (HTTPS). It should be indexed properly and have a clean structure. Your contact information should be accurate and consistent. Your team information should be complete. Your business description should be clear and specific. All of these are table stakes across all platforms.
Your content strategy should focus on answering questions your customers ask, demonstrating expertise, and occasionally offering original insights or data. Content that helps people understand your vertical, your services, and your approach will serve you across all platforms. Content that's just sales pitches or self-promotion will be less effective universally.
Monitoring and Iteration
Unlike traditional SEO, where you have Google Search Console and analytics showing you exactly what's ranking and bringing traffic, AI visibility is harder to monitor. You won't see your position in Perplexity. You can't check if ChatGPT is recommending you. But you can infer progress by looking at your traffic sources. Over the next year, you should see a growing proportion of traffic from ChatGPT, Claude, and Perplexity sources as opposed to traditional Google organic.
You can also do manual testing. Ask each platform specific questions about your industry and see if you show up in the results. Keep a log of the results. Over time, you'll see if your optimisation efforts are working. If you're showing up in Perplexity results but not ChatGPT, you know you're building authority but not getting into training data. Adjust accordingly. Monitor and iterate based on what you observe.
The platforms are still evolving. New citation mechanisms will emerge. New platforms will launch. Your strategy needs to be flexible enough to adapt to changes while maintaining core principles: build real authority, create genuine expertise, make accurate information easy to find and understand. That combination works across whatever platforms emerge.
— Sam