Original research across 25,069 successful AI answers, 28,467 query fan-outs, and 45,780 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
25,069
Citation inclusion
79%
Fan-out multiplier
23.31x
Top cited domain
youtube.com
These figures describe the complete anonymized report sample and the discovery behavior observed around it.
AI answers analyzed
25,069
Foglift analyzed 25,069 successful AI answers across five engines.
Cite this statistic
Foglift analyzed 25,069 successful AI answers across five engines. Source: Foglift Research, GEO Statistics Report 2026 (n=25,069 AI answers). https://foglift.io/research/generative-engine-optimization-statistics#ai-answers-analyzed
Answers with citations
79%
79% of measured AI answers included at least one surfaced citation.
Cite this statistic
79% of measured AI answers included at least one surfaced citation. Source: Foglift Research, GEO Statistics Report 2026 (n=25,069 AI answers). https://foglift.io/research/generative-engine-optimization-statistics#citation-inclusion-overall
Average citations per answer
5.73
AI answers surfaced 5.73 citations on average.
Cite this statistic
AI answers surfaced 5.73 citations on average. Source: Foglift Research, GEO Statistics Report 2026 (n=25,069 AI answers). https://foglift.io/research/generative-engine-optimization-statistics#citations-per-answer-overall
Query fan-out multiplier
23.31x
Each tracked source query produced 23.31 distinct query fan-outs on average.
Cite this statistic
Each tracked source query produced 23.31 distinct query fan-outs on average. Source: Foglift Research, GEO Statistics Report 2026 (n=1,221 workspace-scoped source queries and 28,467 distinct fan-outs). https://foglift.io/research/generative-engine-optimization-statistics#query-fanout-multiplier
Largest cited-domain share
2.8%
youtube.com was the most-cited domain, accounting for 2.8% of all surfaced citations.
Cite this statistic
youtube.com was the most-cited domain, accounting for 2.8% of all surfaced citations. Source: Foglift Research, GEO Statistics Report 2026 (n=143,644 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
4,715
Foglift measured 4,715 successful ChatGPT answers.
Cite this statistic
Foglift measured 4,715 successful ChatGPT answers. Source: Foglift Research, GEO Statistics Report 2026 (n=4,715 ChatGPT answers). https://foglift.io/research/generative-engine-optimization-statistics#chatgpt-answer-volume
ChatGPT citation inclusion rate
88.6%
88.6% of measured ChatGPT answers included at least one surfaced citation.
Cite this statistic
88.6% of measured ChatGPT answers included at least one surfaced citation. Source: Foglift Research, GEO Statistics Report 2026 (n=4,715 ChatGPT answers). https://foglift.io/research/generative-engine-optimization-statistics#chatgpt-citation-rate
ChatGPT average citations
2.94
ChatGPT surfaced 2.94 citations per answer on average.
Cite this statistic
ChatGPT surfaced 2.94 citations per answer on average. Source: Foglift Research, GEO Statistics Report 2026 (n=4,715 ChatGPT answers). https://foglift.io/research/generative-engine-optimization-statistics#chatgpt-average-citations
Claude answer sample
4,856
Foglift measured 4,856 successful Claude answers.
Cite this statistic
Foglift measured 4,856 successful Claude answers. Source: Foglift Research, GEO Statistics Report 2026 (n=4,856 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=4,856 Claude answers). https://foglift.io/research/generative-engine-optimization-statistics#claude-citation-rate
Claude average citations
2.29
Claude surfaced 2.29 citations per answer on average.
Cite this statistic
Claude surfaced 2.29 citations per answer on average. Source: Foglift Research, GEO Statistics Report 2026 (n=4,856 Claude answers). https://foglift.io/research/generative-engine-optimization-statistics#claude-average-citations
Perplexity answer sample
4,312
Foglift measured 4,312 successful Perplexity answers.
Cite this statistic
Foglift measured 4,312 successful Perplexity answers. Source: Foglift Research, GEO Statistics Report 2026 (n=4,312 Perplexity answers). https://foglift.io/research/generative-engine-optimization-statistics#perplexity-answer-volume
Perplexity citation inclusion rate
83.9%
83.9% of measured Perplexity answers included at least one surfaced citation.
Cite this statistic
83.9% of measured Perplexity answers included at least one surfaced citation. Source: Foglift Research, GEO Statistics Report 2026 (n=4,312 Perplexity answers). https://foglift.io/research/generative-engine-optimization-statistics#perplexity-citation-rate
Perplexity average citations
8.49
Perplexity surfaced 8.49 citations per answer on average.
Cite this statistic
Perplexity surfaced 8.49 citations per answer on average. Source: Foglift Research, GEO Statistics Report 2026 (n=4,312 Perplexity answers). https://foglift.io/research/generative-engine-optimization-statistics#perplexity-average-citations
Gemini answer sample
4,809
Foglift measured 4,809 successful Gemini answers.
Cite this statistic
Foglift measured 4,809 successful Gemini answers. Source: Foglift Research, GEO Statistics Report 2026 (n=4,809 Gemini answers). https://foglift.io/research/generative-engine-optimization-statistics#gemini-answer-volume
Gemini citation inclusion rate
77.8%
77.8% of measured Gemini answers included at least one surfaced citation.
Cite this statistic
77.8% of measured Gemini answers included at least one surfaced citation. Source: Foglift Research, GEO Statistics Report 2026 (n=4,809 Gemini answers). https://foglift.io/research/generative-engine-optimization-statistics#gemini-citation-rate
Gemini average citations
7.29
Gemini surfaced 7.29 citations per answer on average.
Cite this statistic
Gemini surfaced 7.29 citations per answer on average. Source: Foglift Research, GEO Statistics Report 2026 (n=4,809 Gemini answers). https://foglift.io/research/generative-engine-optimization-statistics#gemini-average-citations
Google AI Overview answer sample
6,377
Foglift measured 6,377 successful Google AI Overview answers.
Cite this statistic
Foglift measured 6,377 successful Google AI Overview answers. Source: Foglift Research, GEO Statistics Report 2026 (n=6,377 Google AI Overview answers). https://foglift.io/research/generative-engine-optimization-statistics#google-ai-overview-answer-volume
Google AI Overview citation inclusion rate
83.4%
83.4% of measured Google AI Overview answers included at least one surfaced citation.
Cite this statistic
83.4% of measured Google AI Overview answers included at least one surfaced citation. Source: Foglift Research, GEO Statistics Report 2026 (n=6,377 Google AI Overview answers). https://foglift.io/research/generative-engine-optimization-statistics#google-ai-overview-citation-rate
Google AI Overview average citations
7.37
Google AI Overview surfaced 7.37 citations per answer on average.
Cite this statistic
Google AI Overview surfaced 7.37 citations per answer on average. Source: Foglift Research, GEO Statistics Report 2026 (n=6,377 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
54%
54% of crawler requests classified as training, indexing, or user-fetch activity were training.
Cite this statistic
54% of crawler requests classified as training, indexing, or user-fetch activity were training. Source: Foglift Research, GEO Statistics Report 2026 (n=45,780 classified crawler requests). https://foglift.io/research/generative-engine-optimization-statistics#crawler-training-share
Indexing crawler share
30.8%
30.8% of crawler requests classified as training, indexing, or user-fetch activity were indexing.
Cite this statistic
30.8% of crawler requests classified as training, indexing, or user-fetch activity were indexing. Source: Foglift Research, GEO Statistics Report 2026 (n=45,780 classified crawler requests). https://foglift.io/research/generative-engine-optimization-statistics#crawler-indexing-share
User-triggered fetch crawler share
15.2%
15.2% of crawler requests classified as training, indexing, or user-fetch activity were user-fetch.
Cite this statistic
15.2% of crawler requests classified as training, indexing, or user-fetch activity were user-fetch. Source: Foglift Research, GEO Statistics Report 2026 (n=45,780 classified crawler requests). https://foglift.io/research/generative-engine-optimization-statistics#crawler-user-fetch-share
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