Original research across 38,570 successful AI answers, 52,463 query fan-outs, and 87,127 classified crawler requests. Every finding below includes its sample, date window, methodology, and a copy-ready citation.
Methodology
Foglift Research aggregates anonymized production monitoring evidence. Successful answers have no provider error and contain nonblank answer text. Citation metrics deduplicate cited domains within each answer. Query fan-outs are distinct within each workspace and source query. Crawler-purpose shares use only requests classified as training, indexing, or user-triggered fetch activity. No customer, workspace, prompt, answer text, or individual URL is published.
AI answers
38,570
Citation inclusion
81%
Fan-out multiplier
24.38x
Top cited domain
youtube.com
These figures describe the complete anonymized report sample and the discovery behavior observed around it.
AI answers analyzed
38,570
Foglift analyzed 38,570 successful AI answers across five engines.
Cite this statistic
Foglift analyzed 38,570 successful AI answers across five engines. Source: Foglift Research, GEO Statistics Report 2026 (n=38,570 AI answers). https://foglift.io/research/generative-engine-optimization-statistics#ai-answers-analyzed
Answers with citations
81%
81% of measured AI answers included at least one surfaced citation.
Cite this statistic
81% of measured AI answers included at least one surfaced citation. Source: Foglift Research, GEO Statistics Report 2026 (n=38,570 AI answers). https://foglift.io/research/generative-engine-optimization-statistics#citation-inclusion-overall
Average citations per answer
6.16
AI answers surfaced 6.16 citations on average.
Cite this statistic
AI answers surfaced 6.16 citations on average. Source: Foglift Research, GEO Statistics Report 2026 (n=38,570 AI answers). https://foglift.io/research/generative-engine-optimization-statistics#citations-per-answer-overall
Query fan-out multiplier
24.38x
Each tracked source query produced 24.38 distinct query fan-outs on average.
Cite this statistic
Each tracked source query produced 24.38 distinct query fan-outs on average. Source: Foglift Research, GEO Statistics Report 2026 (n=2,152 workspace-scoped source queries and 52,463 distinct fan-outs). https://foglift.io/research/generative-engine-optimization-statistics#query-fanout-multiplier
Largest cited-domain share
2.6%
youtube.com was the most-cited domain, accounting for 2.6% of all surfaced citations.
Cite this statistic
youtube.com was the most-cited domain, accounting for 2.6% of all surfaced citations. Source: Foglift Research, GEO Statistics Report 2026 (n=237,540 citations). https://foglift.io/research/generative-engine-optimization-statistics#citation-domain-concentration
Each engine has three independently citable measures: answer sample, citation inclusion rate, and average surfaced citations.
ChatGPT answer sample
7,296
Foglift measured 7,296 successful ChatGPT answers.
Cite this statistic
Foglift measured 7,296 successful ChatGPT answers. Source: Foglift Research, GEO Statistics Report 2026 (n=7,296 ChatGPT answers). https://foglift.io/research/generative-engine-optimization-statistics#chatgpt-answer-volume
ChatGPT citation inclusion rate
91.3%
91.3% of measured ChatGPT answers included at least one surfaced citation.
Cite this statistic
91.3% of measured ChatGPT answers included at least one surfaced citation. Source: Foglift Research, GEO Statistics Report 2026 (n=7,296 ChatGPT answers). https://foglift.io/research/generative-engine-optimization-statistics#chatgpt-citation-rate
ChatGPT average citations
3.16
ChatGPT surfaced 3.16 citations per answer on average.
Cite this statistic
ChatGPT surfaced 3.16 citations per answer on average. Source: Foglift Research, GEO Statistics Report 2026 (n=7,296 ChatGPT answers). https://foglift.io/research/generative-engine-optimization-statistics#chatgpt-average-citations
Claude answer sample
6,788
Foglift measured 6,788 successful Claude answers.
Cite this statistic
Foglift measured 6,788 successful Claude answers. Source: Foglift Research, GEO Statistics Report 2026 (n=6,788 Claude answers). https://foglift.io/research/generative-engine-optimization-statistics#claude-answer-volume
Claude citation inclusion rate
60.6%
60.6% of measured Claude answers included at least one surfaced citation.
Cite this statistic
60.6% of measured Claude answers included at least one surfaced citation. Source: Foglift Research, GEO Statistics Report 2026 (n=6,788 Claude answers). https://foglift.io/research/generative-engine-optimization-statistics#claude-citation-rate
Claude average citations
2.31
Claude surfaced 2.31 citations per answer on average.
Cite this statistic
Claude surfaced 2.31 citations per answer on average. Source: Foglift Research, GEO Statistics Report 2026 (n=6,788 Claude answers). https://foglift.io/research/generative-engine-optimization-statistics#claude-average-citations
Perplexity answer sample
7,052
Foglift measured 7,052 successful Perplexity answers.
Cite this statistic
Foglift measured 7,052 successful Perplexity answers. Source: Foglift Research, GEO Statistics Report 2026 (n=7,052 Perplexity answers). https://foglift.io/research/generative-engine-optimization-statistics#perplexity-answer-volume
Perplexity citation inclusion rate
90.2%
90.2% of measured Perplexity answers included at least one surfaced citation.
Cite this statistic
90.2% of measured Perplexity answers included at least one surfaced citation. Source: Foglift Research, GEO Statistics Report 2026 (n=7,052 Perplexity answers). https://foglift.io/research/generative-engine-optimization-statistics#perplexity-citation-rate
Perplexity average citations
9.94
Perplexity surfaced 9.94 citations per answer on average.
Cite this statistic
Perplexity surfaced 9.94 citations per answer on average. Source: Foglift Research, GEO Statistics Report 2026 (n=7,052 Perplexity answers). https://foglift.io/research/generative-engine-optimization-statistics#perplexity-average-citations
Gemini answer sample
7,403
Foglift measured 7,403 successful Gemini answers.
Cite this statistic
Foglift measured 7,403 successful Gemini answers. Source: Foglift Research, GEO Statistics Report 2026 (n=7,403 Gemini answers). https://foglift.io/research/generative-engine-optimization-statistics#gemini-answer-volume
Gemini citation inclusion rate
78.8%
78.8% of measured Gemini answers included at least one surfaced citation.
Cite this statistic
78.8% of measured Gemini answers included at least one surfaced citation. Source: Foglift Research, GEO Statistics Report 2026 (n=7,403 Gemini answers). https://foglift.io/research/generative-engine-optimization-statistics#gemini-citation-rate
Gemini average citations
7.36
Gemini surfaced 7.36 citations per answer on average.
Cite this statistic
Gemini surfaced 7.36 citations per answer on average. Source: Foglift Research, GEO Statistics Report 2026 (n=7,403 Gemini answers). https://foglift.io/research/generative-engine-optimization-statistics#gemini-average-citations
Google AI Overview answer sample
10,031
Foglift measured 10,031 successful Google AI Overview answers.
Cite this statistic
Foglift measured 10,031 successful Google AI Overview answers. Source: Foglift Research, GEO Statistics Report 2026 (n=10,031 Google AI Overview answers). https://foglift.io/research/generative-engine-optimization-statistics#google-ai-overview-answer-volume
Google AI Overview citation inclusion rate
82.5%
82.5% of measured Google AI Overview answers included at least one surfaced citation.
Cite this statistic
82.5% of measured Google AI Overview answers included at least one surfaced citation. Source: Foglift Research, GEO Statistics Report 2026 (n=10,031 Google AI Overview answers). https://foglift.io/research/generative-engine-optimization-statistics#google-ai-overview-citation-rate
Google AI Overview average citations
7.41
Google AI Overview surfaced 7.41 citations per answer on average.
Cite this statistic
Google AI Overview surfaced 7.41 citations per answer on average. Source: Foglift Research, GEO Statistics Report 2026 (n=10,031 Google AI Overview answers). https://foglift.io/research/generative-engine-optimization-statistics#google-ai-overview-average-citations
These shares use the latest 60-day window and a denominator restricted to the three stated crawler purposes.
Training crawler share
46.4%
46.4% of crawler requests classified as training, indexing, or user-fetch activity were training.
Cite this statistic
46.4% of crawler requests classified as training, indexing, or user-fetch activity were training. Source: Foglift Research, GEO Statistics Report 2026 (n=87,127 classified crawler requests). https://foglift.io/research/generative-engine-optimization-statistics#crawler-training-share
Indexing crawler share
35.9%
35.9% of crawler requests classified as training, indexing, or user-fetch activity were indexing.
Cite this statistic
35.9% of crawler requests classified as training, indexing, or user-fetch activity were indexing. Source: Foglift Research, GEO Statistics Report 2026 (n=87,127 classified crawler requests). https://foglift.io/research/generative-engine-optimization-statistics#crawler-indexing-share
User-triggered fetch crawler share
17.7%
17.7% of crawler requests classified as training, indexing, or user-fetch activity were user-fetch.
Cite this statistic
17.7% of crawler requests classified as training, indexing, or user-fetch activity were user-fetch. Source: Foglift Research, GEO Statistics Report 2026 (n=87,127 classified crawler requests). https://foglift.io/research/generative-engine-optimization-statistics#crawler-user-fetch-share
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