Traditional SEO has dominated digital marketing for 20 years.
Keywords. Backlinks. Page speed. Meta tags.
It worked because Google's algorithm rewarded these signals.
But AI search engines like ChatGPT, Perplexity, Claude, and Gemini don't work like Google.
They don't rank pages. They cite sources.
And the rules for getting cited are fundamentally different.
The Core Difference
| Aspect | Traditional SEO | AI Search |
|---|---|---|
| Goal | Rank on page 1 | Get cited in AI responses |
| Unit of success | Click-through rate | Citation/mention |
| What's evaluated | Pages | Claims |
| Key signal | Backlinks | Extractability |
| Content style | Keyword-optimized | Fact-dense |
| Discovery | User searches, clicks link | AI reads, synthesizes, responds |
How Google Works (Traditional SEO)
Google crawls your site, indexes pages, and ranks them based on:
- Relevance — Does the page match the query?
- Authority — Do other sites link to it?
- Experience — Is the page fast, mobile-friendly, and safe?
You optimize by:
- Targeting keywords with search volume
- Building backlinks
- Improving Core Web Vitals
- Writing long-form content
Success = ranking higher than competitors for target keywords.
How AI Search Works
AI assistants don't return a list of links. They generate answers.
When a user asks ChatGPT "What's the best CRM for startups?", it:
- Retrieves relevant content (from training data or live search)
- Extracts factual claims from that content
- Synthesizes a response
- Optionally cites sources
Your content either gets pulled into that synthesis, or it doesn't.
There's no page 2. No gradual ranking improvement. You're either cited or invisible.
What AI Looks For (That Google Doesn't)
1. Extractable Claims
Google can rank a page with fluffy marketing copy if it has good backlinks.
AI can't cite fluff. It needs statements it can extract and repeat.
❌ "We help companies achieve their full potential."
✅ "Reduces customer onboarding time by 40% based on 200+ deployments."
The second one can be cited. The first cannot.
→ Read more: Your Website Says Nothing AI Can Use
2. Semantic Completeness
Google doesn't care if you mention "SOC 2 compliance" or "GDPR" on your homepage.
AI does. When evaluating whether to cite you, AI looks for the concepts it expects in your category. Missing expected concepts = lower trust = no citation.
→ How we measure this: Semantic Coverage
3. Entity Signals
Google trusts backlinks as authority signals.
AI trusts entity signals: customer logos, analyst mentions, certifications, case studies with real names.
If AI can't verify your claims through recognized entities, it's less likely to cite you.
4. Content Clarity
Google can rank pages with buried information if the overall SEO is strong.
AI struggles with ambiguity. If your pricing is hidden, your features are vague, or your value prop requires interpretation, AI will cite a competitor who was clearer.
What Still Matters for Both
Not everything changed. These factors help in both paradigms:
| Factor | Why It Still Matters |
|---|---|
| Structured data (Schema.org) | Helps AI understand page context |
| Clear headings | Both Google and AI use heading structure |
| Fast page loads | AI crawlers have timeouts too |
| Crawlability | If it can't be crawled, it can't be cited |
| Authority signals | Both systems reward credibility |
What to Do About It
If you're starting from zero
Focus on AI search first. The requirements are stricter, and meeting them will also improve your traditional SEO.
- Make every key claim specific and extractable
- Cover the semantic concepts your category requires
- Add entity signals (customers, certifications, integrations)
- Structure content with clear headings and schema markup
If you already have strong SEO
Audit your content for AI extractability. Ask:
- Can AI quote specific facts from your pages?
- Do you cover the concepts AI expects?
- Are your claims backed by verifiable signals?
Use the AI Search Check to see how AI currently perceives your content.
The Bottom Line
Traditional SEO optimizes for algorithms.
AI search requires content that can be understood, extracted, and cited.
Both matter. But the skills are different.
Companies that adapt early will own the AI search results in their category. Everyone else will wonder why their traffic dropped despite "good SEO."
See How Real Companies Score
We analyze AI visibility for leading SaaS companies:
Want your site analyzed? Request an AI Visibility Analysis.