B Evidence Grade B Graded accuracy verified by the review judge Safe to Cite Current

4% -- source overlap with google organic results for GPT-4o (2026-01)

Name: Source Overlap With Google Organic Results Statistics
Creator: Lighthouse Intelligence
Published: 2026-10-04

2026-01 · Peer-reviewed comparative analysis (unnamed)

GPT-4o draws from a source pool that overlaps with Google's organic results by 4.0%.

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Attribution: Peer-reviewed comparative analysis (unnamed) View source

Lighthouse Research Team

Last verified: 2026-10-04 · How we verify data →

Source verified Evidence graded

Value

Unit

Percentage

Data Vintage

2026-01

Entity

GPT-4o

Geography

Global

Evidence Quality

Strong, reliable evidence

Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.

61/100 confidence

Single source - not yet corroborated

Score breakdown

Extraction

Source Trust

Citation Chain

Independence

Methodology

Freshness

Source

Peer-reviewed comparative analysis (unnamed) Primary Tier B

https://betteraisearch.com/blog/geo-vs-seo-source-overlap ↗

Confidence: 31/100 Vintage: 2026-01 Channel: Common Crawl

Source Article

GPT-4o and Google share only 4% of the same sources. Your SEO strategy is addressing a fraction of AI search.

Original Research

Peer-reviewed comparative analysis (unnamed) · Original study ↗

Methodology

Peer-reviewed comparative analysis tracking source selection across four AI platforms, measured via Spearman correlation against Google organic results

Methodology documented

Segmentation

IndustryAI RegionGlobal RoleAll marketers Channelsearch

Cite this stat

Plain Text

GPT-4o: 4% source overlap with google organic results. Source: Peer-reviewed comparative analysis (unnamed) (2026-01). Via Lighthouse Intelligence -- https://lighthousedata.io/data/gpt4o-google-source-overlap-4pct

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<blockquote cite="https://lighthousedata.io/data/gpt4o-google-source-overlap-4pct" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>4%</strong> -- source overlap with google organic results for GPT-4o<br><small>Source: Peer-reviewed comparative analysis (unnamed) (2026-01) · <a href="https://lighthousedata.io/data/gpt4o-google-source-overlap-4pct" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>

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