Resources

AI SEO Checklist 2026

AISOS Resource

You've read the guides, understood the principles, but you're missing a concrete list of actions. This checklist covers the 50 points to verify so your site is optimized for both classic SEO and AI visibility in 2026.

We've organized these points by priority and domain. Technical points should be addressed first as they condition the effectiveness of everything else. Then come content optimizations, followed by amplification actions.

Each point is independent and actionable. You can tackle them in order or start with those corresponding to your most critical gaps. The key is to stop theorizing: every unchecked point is a missed opportunity.

Technical infrastructure (points 1-10)

1. Robots.txt allows GPTBot, Google-Extended, ClaudeBot, PerplexityBot. Verify these user-agents are not blocked. This is point number one because if it fails, nothing else works.

2. XML sitemap up-to-date with real lastmod dates. No fictitious or identical dates. AI crawlers use these dates to prioritize what to index.

3. Organization schema on homepage and About page. Name, logo, description, foundingDate, founders, sameAs (social networks). Your entity card for LLMs.

4. Article schema on every content page. With author, datePublished, dateModified, headline, description.

5. FAQPage schema on pages containing Q&As. Even if you don't use FAQ format visually, the schema benefits AI visibility significantly.

6. Server-side rendering of main content. Test with "View Source" — if your content doesn't appear in the initial HTML, AI crawlers don't see it.

7. Loading time under 3 seconds. AI crawlers have limited time budgets per page.

8. HTTPS active with valid certificate. Basic but still missing on some sites.

9. No redirect chains. Each redirect degrades the signal for crawlers.

10. Correct canonical tags on every page. LLMs need to know which version is the reference.

Content structure (points 11-20)

11. Single H1 per page, formulated as a question or clear topic. The H1 is the strongest signal for LLMs when identifying a page's subject.

12. Logical H2-H3 hierarchy without level skipping. H1 > H2 > H3, never H1 > H3. LLMs parse this hierarchy to understand logical structure.

13. First paragraph after each H2 = direct answer. Inverted pyramid format is optimal for RAG extraction.

14. Bullet lists for enumerations. More easily parseable than narrative paragraphs.

15. HTML tables for comparisons. No image tables — real HTML with column headers that machines can read.

16. Explicit citations and sources with links. "According to [source], [claim] (link)" is the ideal format for citability.

17. Visible dates on every content piece. Publication date AND last update date, in visible content and schema markup.

18. Content length adapted to the topic. No arbitrary minimum, but sufficient to treat the topic in depth. Generally 1500-3000 words for a guide, 500-1000 for an Answer Page.

19. Table of contents at the top of long content. With anchors to each section. Facilitates both human navigation and machine parsing.

20. No content hidden behind JavaScript accordions. If content isn't in the DOM on load, it's invisible to crawlers.

Content and editorial (points 21-30)

21. At least 20 "Answer Pages" covering your key questions. One page = one question = one direct answer. This is the format most cited by LLMs.

22. A topical hub for each area of expertise. Pillar page + interconnected satellite pages. LLMs evaluate topical authority, not page-by-page authority.

23. Original data in at least 5 pieces of content. Surveys, benchmarks, analyses. These are the most-cited content types across all LLMs.

24. Honest comparisons including competitors. "[You] vs [Competitor]" is a format massively cited by LLMs. Honesty (admitting your weaknesses) increases trust and citation probability.

25. Detailed author pages with Person schema. Every author on your site needs a page with bio, expertise, publications.

26. Every article linked to its author. Via visible byline and Article/author schema.

27. Content updated quarterly. Review your 20 best pieces every 3 months. Update figures, add recent examples, refresh dateModified.

28. Zero duplicate or thin content. Pages that add nothing new are ignored by LLMs.

29. Expertise tone in every piece. Phrases like "in our experience...", "we've observed across our clients..." signal field expertise that LLMs value.

30. No gating on strategic pages. Content behind a form is invisible to LLMs. Keep gating for secondary resources only.

External signals (points 31-40)

31. Presence in at least 3 trade media outlets. Guest articles, interviews, contributions. Mentions in these sources reinforce your authority signal for LLMs.

32. Wikipedia profile (if eligible). Wikipedia is one of the most-used sources by LLMs to build entity graphs. If your company is eligible, create or enrich your page.

33. Presence in reference directories. Crunchbase, G2, Capterra, specialized directories for your sector. These platforms are crawled by LLMs.

34. Active social profiles linked to your site. LinkedIn, Twitter/X, YouTube. LLMs use cross-platform consistency as a trust signal.

35. At least 5 podcasts or webinars with transcription. Transcriptions are indexed by LLMs. A podcast without transcription is invisible to AI.

36. Contributions to reference technical forums. Stack Overflow, Reddit (specialized subreddits), sector forums. LLMs draw heavily from these sources.

37. Press releases on wire services. PR Newswire, BusinessWire. These are indexed by LLMs and reinforce your entity's freshness signal.

38. Public customer testimonials with name and company. On your site and third-party platforms. LLMs cite verifiable social proof.

39. Partnerships and co-publications. A co-authored article with a recognized partner doubles your authority signal.

40. Quality backlinks (still relevant). Backlinks remain a signal for Bing (used by ChatGPT) and Google (used by Gemini). Don't neglect them.

Monitoring and measurement (points 41-50)

41. Monthly citation test on ChatGPT. 20 target queries, private browsing, results logged in a spreadsheet.

42. Monthly citation test on Perplexity. Same protocol. Perplexity cites sources more readily — it's a good leading indicator.

43. Monthly citation test on Gemini. Same protocol. Gemini uses Google Search — results often differ from ChatGPT.

44. Monthly AI Visibility Score calculation. (Positive citations / total queries x total LLMs) x 100. Track monthly evolution.

45. Quarterly competitive analysis. Same test for your 3 main competitors. Identify gaps and opportunities.

46. Bing Webmaster Tools impression tracking. ChatGPT uses Bing. Rising Bing impressions is a positive signal.

47. Mention alerts configured. Mention, Brand24 or equivalent. Monitor new mentions of your brand across the web.

48. Quarterly Schema.org audit. Verify your schemas are still valid and up-to-date after each site modification.

49. Quarterly robots.txt review. Plugin or configuration updates can inadvertently block AI crawlers.

50. Quarterly AI visibility ROI report. Correlate AI citations with inbound leads. Measure cost per lead attributable to AI visibility vs classic SEO vs paid.

How to use this checklist effectively

Don't try to check all 50 points in one week. The optimal strategy is to prioritize by impact.

Week 1: Technical points (1-10). These are the foundations. If your robots.txt blocks AI crawlers, everything else is useless. Start here. Most of these are one-time fixes that don't require ongoing maintenance.

Weeks 2-3: Content structure (11-20). Take your 10 most strategic pages and apply the structure rules. This is editorial work that takes time but has an immediate impact on the citability of your content.

Month 2: Content and editorial (21-30). Launch the creation of your Answer Pages and topical hubs. This is the heaviest phase in terms of production, but also the most impactful in the medium term.

Month 3+: External signals (31-40). Develop your presence in sources LLMs consume. This phase is ongoing and requires regular effort.

Ongoing: Monitoring (41-50). Set up your measurements from month one and maintain them. Without monitoring, you can't measure the impact of your actions or adjust your strategy.

At AISOS, we guide clients through this entire checklist with a system that automates monitoring, prioritizes actions by impact, and tracks progress in real-time. But you can start on your own with this list and progress methodically. The most important thing is to start.

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