B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
5%
5% -- citation turnover rate for Claude (2026-02)
Claude's observed citation turnover rate is 5 to 10% per 48-hour monitoring cycle, concentrated in competitive queries.
- Observational data from external monitoring, not official disclosure
- Concentrated in competitive queries
Attribution:
View source
Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
5%
Unit
Percentage
Data Vintage
2026-02
Entity
Evidence Quality
B
Strong, reliable evidence
Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.
Single source - not yet corroborated
Score breakdown
Extraction
75
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
fogtrail.ai
Primary
Tier B
https://fogtrail.ai/blog/how-often-ai-search-engines-update-citations ↗
Source Article
How Often Do AI Search Engines Update Their Citations? (Our Data)
How Often Do AI Search Engines Update Their Citations? (Our Data)
AI search engines refresh their retrievable knowledge approximately every 48 hours, but "refresh" means very different things depending on the engine. As of February 2026, our monitoring data across ChatGPT, Perplexity, Gemini, Grok, …
Original Research
fogtrail.ai
· Original study ↗
Methodology
Range midpoint; concentrated in competitive queries
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
Claude: 5% citation turnover rate. Source: fogtrail.ai (2026-02). Via Lighthouse Intelligence -- https://lighthousedata.io/data/claude-citation-turnover-5-10pct
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<blockquote cite="https://lighthousedata.io/data/claude-citation-turnover-5-10pct" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>5%</strong> -- citation turnover rate for Claude<br><small>Source: fogtrail.ai (2026-02) · <a href="https://lighthousedata.io/data/claude-citation-turnover-5-10pct" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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