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

21%

21% -- average unique domains cited per response change for ChatGPT (2026-03)

Name: Average Unique Domains Cited Per Response Change Statistics
Creator: Lighthouse Intelligence
Published: 2026-10-04

2026-03 · BetterAISearch

Average unique domains cited per response in ChatGPT fell by 21% following the GPT-5.3 update in March 2026.

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Attribution: BetterAISearch View source

Lighthouse Research Team

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

Source verified Evidence graded

Value

21%

Unit

Percentage

Data Vintage

2026-03

Entity

ChatGPT

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

BetterAISearch Primary Tier C

https://betteraisearch.com/platforms/chatgpt ↗

Confidence: 48/100 Vintage: 2026-03 Channel: Common Crawl

Source Article

Ranking in ChatGPT — Evidence

Original Research

BetterAISearch · Original study ↗

Methodology

Platform behavior analysis by BetterAISearch; methodology not stated. Decline attributed to GPT-5.3 transition.

Methodology documented

Segmentation

IndustryAI & Machine Learning RoleAll marketers Channelmulti-channel

Cite this stat

Plain Text

ChatGPT: 21% average unique domains cited per response change. Source: BetterAISearch (2026-03). Via Lighthouse Intelligence -- https://lighthousedata.io/data/chatgpt-unique-domains-cited-decline-2026

HTML Embed

<blockquote cite="https://lighthousedata.io/data/chatgpt-unique-domains-cited-decline-2026" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>21%</strong> -- average unique domains cited per response change for ChatGPT<br><small>Source: BetterAISearch (2026-03) · <a href="https://lighthousedata.io/data/chatgpt-unique-domains-cited-decline-2026" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>

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