simonsfoundation.org 71 B
🛡️ SEO 58 🤖 GEO 89 ⚡ Perf 39 🏗️ Arch 88

simonsfoundation.org — Global SEODiff Score 71/100

simonsfoundation.org
📊

Registering an exceptional 89/100 on the AI-Crawler Reality Index, simonsfoundation.org sits in the highest tier of AI extractability among indexed domains. In the education sector, simonsfoundation.org outperforms the average (57), suggesting strong competitive positioning in AI search. Its server-rendered architecture ensures AI crawlers receive complete HTML on first request, a key advantage for extractability. A 5.0× bloat ratio is typical for sites in this tech tier — not wasteful, but streamlining could further boost extractability. Only 1 schema block is present — adding Organization, WebSite, and Breadcrumb schemas would significantly improve structured data coverage. Robots.txt grants unrestricted access to the key AI user-agents, which is the strongest starting position for AI visibility.

71
B — Global SEODiff Score
Comprehensive search visibility assessment
Strong foundations, but Performance (39) is your bottleneck.
🎯 Top Fix: Fix title tag length → +3 pts
🔬 Automated SEODiff Assessment · Snapshot: Feb 26, 2026 · 📋 API
Does your site score higher than simonsfoundation.org?
Run the same 40-signal audit on your own domain — free, instant results.
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🧮 Score Transparency — How is this calculated?
🛡️ Traditional SEO (25% weight)58 × 0.25 = 14.5
🤖 AI Readiness / GEO (40% weight)89 × 0.40 = 35.6
⚡ Performance (20% weight)39 × 0.20 = 7.8
🏗️ Architecture & Trust (15% weight)88 × 0.15 = 13.2
Weighted sum = 14.5 + 35.6 + 7.8 + 13.2
Global SEODiff Score = 71 (B)
📊 ACRI Sub-Scores (AI Readiness Detail)
100
Bot Access
avg 92
100
Rendering
avg 93
98
Structure
avg 35
42
Schema
avg 10
85
Tech Stack
avg 64
🔀
Visibility Delta: Google vs AI
Google (Tranco)
Top 8%
Rank #82278
-7 pts
Gap
AI (ACRI)
Top 1%
Score 89/100

simonsfoundation.org is more visible to Google than to AI models. There's room to improve AI discoverability to match your search reputation. ACRI measures technical crawler readiness. Read the methodology →

Why simonsfoundation.org ranks here

Tech stackWordPress
Industryeducation
RenderingSSR
Schema coverage1 blocks
Token bloat5.0×

Fastest improvements

  • Reduce token bloat (navigation/footer/code) so agents reach your main content faster (see Token Bloat).
  • Create an llms.txt file so AI crawlers can discover your content structure without heavy crawling. Generate llms.txt →
  • Run a full entropy audit to find which DOM regions waste the most tokens. Run Entropy Audit →
🧪

JavaScript Rendering Check

We check what AI crawlers miss when they skip JavaScript execution.

Running headless browser to simulate AI extraction…
🛡️

Traditional SEO

58/100 25 % of Global Score 🟢 High Confidence

📝 Title Tag

71 chars
Too long

Optimal range: 30–60 characters for SERP display.

📋 Meta Description

200 chars
Too long

Optimal range: 120–160 characters for snippet control.

🔤 Heading Hierarchy

  • ✓ Exactly 1 <h1> tag — found 1
  • ✓ Has <h2> headings — found 3
  • ✓ <h2> not before <h1>

🔍 Indexability

  • ✓ Canonical tag present → https://www.simonsfoundation.org/
  • ✓ No noindex directive
  • ✓ Meta viewport set
  • ✓ HTML lang attribute → en-US
  • ✗ Hreflang tags
  • ✓ Googlebot allowed by robots.txt

🌐 Social / OpenGraph

  • ✓ og:title — Advancing Research in Basic Science and Mathematics | Simons Foundation
  • ✓ og:description — The Simons Foundation’s mission is to advance the frontiers of research in mathematics and the basic sciences. We sponsor a range of programs that aim to promote a deeper understanding of our world.
  • ✓ og:image — preview
  • ✓ twitter:card — summary_large_image
📐 How the SEO Pillar score is calculated

SEO Pillar = Title (20 pts) + Meta Desc (20 pts) + Heading Hierarchy (20 pts) + Indexability (20 pts) + Social/OG (20 pts)

Each sub-score is derived from the checks above. Canonical tag, lang attribute, og:image, and a single H1 are the highest-impact items.

🤖

AI Readiness / GEO

89/100 40 % of Global Score 🟢 High Confidence

This pillar aggregates citation share, hallucination risk, bot access, schema health, and content extractability. The individual diagnostic sections below contribute to this score.

🔗

Citation Alternatives

Research
💡
Insight: In the education sector, educationdirectory.com.au (ACRI: 86) currently has stronger AI extractability. AI models tend to prefer sources with higher semantic structure and schema coverage. Domains with ACRI < 40 see 3.5× more hallucinations. Read the research →
simonsfoundation.org
78
Your ACRI Score
86
Industry Peer ACRI
AI models prioritize pages with strong semantic structure and schema coverage. educationdirectory.com.au has schema coverage of 4 blocks and uses Custom / Proprietary. Improve your score by implementing the remediation patches below.
📊 Side-by-Side Comparison →
🚨

Hallucination Risk

Research

Is AI lying about your brand? This panel measures how likely LLMs are to hallucinate facts when extracting information from your page.

Analyzing hallucination risk…

🤖 Bot Access Matrix

GPTBot (OpenAI)
Allowed
ClaudeBot (Anthropic)
Allowed
CCBot (Common Crawl)
Allowed
Google-Extended
Allowed
Googlebot
Allowed

👻 Rendering (Ghost Ratio) Docs

Ghost Ratio 0%
0% — Safe 50% 100% — Risk
Status Server-Side Rendered (Safe)
Rendering Type SSR

📊 Structure & Information Density Docs

Structure Grade 98/100 — Excellent
Structured Elements 424 elements (424 lists, 0 rows, 0 headers)
Total Words1461
Raw Density29.0%

🏷️ Schema Health Docs

Organization Schema ✅ Present
Product / Service Schema ⚠️ Not Found
Total Schema Blocks1 block(s) — Basic (low value for AI)

Schema Coverage Map

2/7 schema types detected
✅ Organization
❌ Product/Service
❌ Breadcrumb
❌ FAQ
❌ Article
✅ WebSite
💡Product / Service schema missing. AI models don't know this is a SaaS product. Add Product or SoftwareApplication schema so AI understands what you offer and can surface pricing/features.
💡BreadcrumbList schema missing. AI cannot understand your site hierarchy or how pages relate to each other.
💡FAQ schema missing. Adding FAQPage schema lets AI models directly extract Q&A pairs for Featured Snippets and chatbot answers.

📐 AI Efficiency Metrics Docs

85
AI Extractability
Low
Crawl Cost
None
Blocklist Risk
Extractability85/100 — AI models can easily extract answers from this page
Crawl CostLow (30/100) — efficient for AI crawlers to process
Blocklist RiskNone — 0 of 5 AI crawlers blocked

Token Bloat Research

20%
🗑️ 80%
Useful Content (34.8 KB)Bloat (140.5 KB)
Token Bloat Ratio5.0× — Lean

Multimodal Readiness

Visual Context73% Optimized for Vision
Image Alt Coverage8 / 11 images have alt text

TDM Rights

TDM-Reservation HeaderNot set
X-Robots-Tag: noaiNot set

🔥 Structural Entropy Check Research

0 Entropy
Poor Token Bloat: High
Noise Ratio: 80.2% · SNR: 0.25 · Signal: 8904 / Noise: 35969 tokens

🔬 AI-Crawler Simulation

See your website the way AI crawlers do. CSS stripped, structure labeled, content chunked.

🌐
This is what humans see — styled, branded, visual.
Toggle to "AI Agent View" to see what GPTBot, ClaudeBot, and other AI crawlers actually extract from this page.
🤖

AI Answer Preview

NEW

See how AI models summarize your site. Left: your actual content. Right: what the LLM extracts and says about you.

Simulating AI extraction…
🧠

The LLM Interpretation

AI-VERIFIED

A local LLM (mlx-community/Qwen2.5-7B-Instruct-4bit) analyzed the extracted content of simonsfoundation.org and produced this structured business intelligence. Fields marked SEMANTIC VOID indicate information the AI could not find — a critical gap in your site’s machine-readability.

Core Offering
Advancing research in mathematics and basic sciences
Target Audience
Researchers and scientific communities
Pricing Model
Funding and sponsorship
Model: mlx-community/Qwen2.5-7B-Instruct-4bit · Analyzed: 2026-02-26 · Data extracted from the site’s main content via strict JSON prompting.

🔧 Tech Stack

FrameworkWordPress
AI-Readiness Score85/100
Servercloudflare
CDNcloudflare
HTTP Status200
Load Time1134 ms
Raw HTML Size175.3 KB
Visible Text Size34.8 KB

Performance & Speed

39/100 20 % of Global Score 🟢 High Confidence

⏱️ Time to First Byte

1134 ms
Slow — bots may time out or deprioritise

Google considers <200 ms "good". AI crawlers may have even shorter timeouts.

📦 Page Weight

1937
DOM nodes
175 KB
HTML payload
Moderate weight — acceptable for most scenarios

🗄️ Cache & CDN

  • ✓ Cache-Control header → s-maxage=31536000, max-age=60
  • ✓ CDN cache status → HIT
  • ✓ CDN detected → cloudflare

🔬 Tracker Tax

0
tracker scripts
0
third-party domains
0.0%
token overhead
Minimal tracker load — clean signal for bots
📐 How the Performance Pillar score is calculated

Perf Pillar = TTFB (35 pts) + Page Weight (25 pts) + Cache/CDN (20 pts) + Tracker Tax (20 pts)

TTFB <200 ms = full marks. DOM >3000 or payload >300 KB incurs heavy penalties. Tracker scripts beyond 5 reduce score.

🏗️

Architecture & Trust

88/100 15 % of Global Score 🟢 High Confidence

🗺️ Sitemap & Robots

  • ✓ Sitemap declared in robots.txt → https://www.simonsfoundation.org/sitemap.xml
  • ✓ Googlebot allowed
  • ✓ GPTBot allowed
  • ✓ ClaudeBot allowed

🔗 Linking

379
internal links
19
external links
Good internal linking — helps crawlers discover content

🔒 Security & Trust

  • ✓ HSTS header (Strict-Transport-Security)
  • ✗ Content-Security-Policy header
  • ✓ HTTP status 200 OK (got 200)

♿ Accessibility Signals

  • ✓ HTML lang attribute → en-US
  • ✓ Meta viewport for mobile
  • ✓ Single H1 for screen readers
📐 How the Architecture Pillar score is calculated

Arch Pillar = Sitemap & Robots (30 pts) + Linking (25 pts) + Security (25 pts) + Accessibility (20 pts)

Having a valid sitemap, allowing AI bots, HSTS, and a good internal link count are the highest-impact items.

🏅 AI-Verified Trust Badge

Your site scores 78/100. Reach 80+ to unlock the green "AI-Verified" badge. Fix the issues below to improve your score.

AI-Verified badge for simonsfoundation.org
Pending Audit — score below 80 threshold
<a href="https://seodiff.io/radar/domains/simonsfoundation.org" rel="noopener"><img src="https://seodiff.io/api/v1/badge?domain=simonsfoundation.org" alt="AI-Verified by SEODiff" width="280" height="52"></a>

💡 Paste in your site footer, GitHub README, or email signature. Badge updates automatically as your score changes.

� Deep Crawl Analysis 43 pages · Deep-10

Homepage ACRI
78
Single-page score
-31
Severe hidden bloat
Δ delta
Site-Wide ACRI
48
Avg across 43 pages · Range 47–57
🔍
Hidden Bloat Detected

Homepage scores 78, but internal pages average only 48 — a -31-point gap. Blogs, docs, and legacy content are dragging down AI readability site-wide.

Topical Cohesion
3%
Topical Drift
TF-IDF cosine similarity
Total Words
5441
Avg Bloat
236.2×
Ext. Citations
11
Page Type ACRI Token Bloat Words Status
https://simonsfoundation.org/about
About
about 57 95.6× 321
https://www.simonsfoundation.org/people/jawole-willa-jo-zollar/
Jawole Willa Jo Zollar
other 57 122.5× 221
https://www.simonsfoundation.org/series/biology-folding-the-future/
Biology: Folding the Future: The Structural Biology Revolution
other 57 79.3× 363
https://www.simonsfoundation.org/people/hayk-hakobyan/
Hayk Hakobyan
other 57 137.2× 202
https://simonsfoundation.org/contact
Contact
support 47 239.9× 112
https://www.simonsfoundation.org/job/flatiron-research-fellow-developmental-dynamics-ccb-2/
Flatiron Research Fellow, Developmental Dynamics, CCB
careers 47 269.8× 101
https://www.simonsfoundation.org/job/summer-research-interns-icc-2/
Summer Research Interns, ICC
careers 47 264.8× 101
https://www.simonsfoundation.org/job/summer-research-interns-ccn-2/
Summer Research Interns, CCN
careers 47 273.9× 99
https://www.simonsfoundation.org/job/summer-research-interns-ccm/
Summer Research Interns, CCM
careers 47 273.4× 99
https://www.simonsfoundation.org/job/summer-internts-ccq/
Summer Research Assistant/Associate, CCQ
careers 47 273.3× 100
https://www.simonsfoundation.org/job/flatiron-research-fellow-biophysical-modeling-genomics-ccb/
Flatiron Research Fellow, Biophysical Modeling & Genomics, CCB
careers 47 264.9× 103
https://www.simonsfoundation.org/job/flatiron-research-fellow-biological-transport-networks-ccb-2/
Flatiron Research Fellow, Biological Transport Networks, CCB
careers 47 267.4× 102
https://www.simonsfoundation.org/job/associate-research-scientist-machine-learning-ccm-joint-with-with-cooper-union/
Associate Research Scientist - Machine Learning, CCM (Joint with with Cooper Union)
careers 47 254.8× 107
https://www.simonsfoundation.org/job/associate-research-scientist-ccq-and-icc/
Associate Research Scientist, CCQ and ICC
careers 47 268.3× 102
https://www.simonsfoundation.org/job/research-scientist-research-scientist-software-open-rank-ccm/
Research Scientist/Research Scientist - Software (Open Rank), CCM
careers 47 264.1× 103
https://www.simonsfoundation.org/job/flatiron-research-fellow-icc-2/
Flatiron Research Fellow, ICC
careers 47 264.8× 101
https://www.simonsfoundation.org/job/associate-research-scientist-research-scientist-open-rank-icc/
Associate Research Scientist/Research Scientist (Open Rank), ICC
careers 47 258.3× 104
https://www.simonsfoundation.org/job/flatiron-research-fellow-software-ccq/
Flatiron Research Fellow-Software, CCQ
careers 47 273.6× 100
https://www.simonsfoundation.org/job/senior-software-engineer-project-lead-genomics-ccb/
Senior Software Engineer & Project Lead Genomics, CCB
careers 47 264.6× 103
https://www.simonsfoundation.org/job/network-engineer-intern-scc/
Network Engineer Intern, SCC
careers 47 273.9× 98
https://www.simonsfoundation.org/job/flatiron-research-fellow-ccq-2/
Flatiron Research Fellow, CCQ
careers 47 273.3× 100
https://www.simonsfoundation.org/job/associate-research-scientist-ccq-2/
Associate Research Scientist, CCQ
careers 47 273.4× 100
https://www.simonsfoundation.org/job/flatiron-research-fellow-ccm-4/
Flatiron Research Fellow, CCM
careers 47 273.5× 99
https://www.simonsfoundation.org/job/pre-doctoral-researcher/
Pre-Doctoral Researcher, CCQ
careers 47 276.0× 99
https://www.simonsfoundation.org/job/visiting-scholar-ccq-joint-with-cuny-graduate-center-faculty-position/
Visiting Scholar, CCQ joint with CUNY Graduate Center Faculty Position
careers 47 259.1× 106
https://www.simonsfoundation.org/job/visiting-scholar-ccn-joint-cuny/
Visiting Scholar, CCN Joint with CUNY Graduate Center
careers 47 263.7× 103
https://www.simonsfoundation.org/job/software-engineer-intern-2/
Software Engineer Intern, SCC
careers 47 273.9× 98
https://www.simonsfoundation.org/job/database-and-automated-testing-intern-for-high-performance-computing-and-machine-learning-benchmarks/
Database and Automated Testing Intern (for High Performance Computing and Machine Learning Benchmarks), SCC
careers 47 251.0× 108
https://www.simonsfoundation.org/job/high-performance-computing-intern/
High Performance Computing Intern, SCC
careers 47 271.4× 99
https://www.simonsfoundation.org/job/scientific-visual-exploration-software-intern/
Scientific Visual Exploration Software Intern, SCC
careers 47 269.1× 100
https://www.simonsfoundation.org/people/wisdom-boinde/
Wisdom Boinde
other 47 216.4× 125
https://www.simonsfoundation.org/people/xavier-evans/
Xavier Evans
other 47 216.4× 125
https://www.simonsfoundation.org/video/aaron-smith-ionizing-radiation-nebular-emission-and-lyman-alpha-feedback-in-the-high-redshift-universe/
Aaron Smith: Ionizing Radiation, Nebular Emission, and Lyman-alpha Feedback in the High-Redshift Universe
meta 47 232.0× 120
https://www.simonsfoundation.org/video/eva-laplace-how-the-last-evolutionary-stages-shape-the-explosive-deaths-of-massive-stars/
Eva Laplace: How the Last Evolutionary Stages Shape the Explosive Deaths of Massive Stars
other 47 229.5× 121
https://www.simonsfoundation.org/people/jack-dunham/
Jack Dunham
other 47 150.9× 183
https://www.simonsfoundation.org/video/greg-bryan-galaxies-and-stars-a-love-story-with-feedback/
Greg Bryan: Galaxies and stars: a love story (with feedback)
meta 47 261.5× 110
https://www.simonsfoundation.org/people/trinity-taylor/
Trinity Taylor
other 47 218.2× 124
https://www.simonsfoundation.org/people/omokhuwele-umoru/
Omokhuwele Umoru
other 47 218.3× 124
https://www.simonsfoundation.org/people/nathaniel-oyeka/
Nathaniel Oyeka
other 47 218.2× 124
https://www.simonsfoundation.org/people/lucie-afko/
Lucie Afko
other 47 218.0× 124
https://www.simonsfoundation.org/people/logan-white/
Logan White
other 47 218.0× 124
https://www.simonsfoundation.org/people/katelyn-shelton/
Katelyn Shelton
other 47 218.2× 124
https://www.simonsfoundation.org/people/ruo-yu-shang/
Ruo-Yu Shang
other 47 172.6× 159
🔗
Outbound External Citations
11 unique external domains cited across 43 pages
sfari.org ×43
sam.simonsfoundation.org ×43
instagram.com ×43
agingbrain.simonsfoundation.org ×43
youtube.com ×43
bsky.app ×43
twitter.com ×43
ui.adsabs.harvard.edu ×43
🔄 Re-Crawl & Update 📡 Track this Domain

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🔌 API Access

Pull this data programmatically. All sub-page metrics are available via our public API.

curl https://seodiff.io/api/v1/deep10/domain/simonsfoundation.org

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🩹

Remediation Patches

COPY-PASTE

Auto-generated code fixes tailored to simonsfoundation.org. Copy and paste these into your codebase to improve AI visibility. These patches are mathematically proven to increase extraction accuracy →

Add FAQ Schema
Medium Impact ⏱ 10 min
FAQ schema lets AI models directly extract Q&A pairs. This is the easiest way to get featured in AI responses.
html
<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "FAQPage",
  "mainEntity": [
    {
      "@type": "Question",
      "name": "What is Simonsfoundation?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Add your answer here — describe what Simonsfoundation does in 1-2 sentences."
      }
    },
    {
      "@type": "Question",
      "name": "How does Simonsfoundation work?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Explain the key features and how users interact with Simonsfoundation."
      }
    }
  ]
}
</script>
📈

Projected Impact

ROI EST.

If you apply the patches above, here's the estimated improvement for simonsfoundation.org:

Current Score
89
Projected Score
95
Improvement
+6 pts
Reduce token bloat +3 pts
Add FAQ schema +3 pts

*Estimates based on SEODiff's scoring model. Actual results depend on implementation quality.

📋 Data Export

Download scores and metadata for audits, client reports, or CI/CD pipelines. Exports contain computed metrics only (no copyrighted content).

All data is generated automatically and updated with each crawl. JSON exports contain scores and metadata only (no copyrighted content).

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🧭 Self-Diffing (Private Layer)

For owned domains, combine this world snapshot with private drift + regression history.
Template Drift
Track in My Site
Drift → Traffic Impact
In development coming soon
Regression Incidents
Track in My Site
Internal Linking
Deep Audit graph
Semantic Structure
GEO view in Deep Audit
Content Quality
Thin/duplicate tracking

🕒 History

Score over timeAvailable in My Site history
Drift eventsTemplate timeline + incidents
Drift → Revenue AttributionComing soon
Schema/rendering/extractability changesTracked per scan in project history