Original research across 62,679 successful AI answers, 95,232 query fan-outs, and 342,774 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
62,679
Citation inclusion
77.6%
Fan-out multiplier
29.35x
Top cited domain
youtube.com
These figures describe the complete anonymized report sample and the discovery behavior observed around it.
AI answers analyzed
62,679
Foglift analyzed 62,679 successful AI answers across five engines.
Cite this statistic
Foglift analyzed 62,679 successful AI answers across five engines. Source: Foglift Research, GEO Statistics Report 2026 (n=62,679 AI answers). https://foglift.io/research/generative-engine-optimization-statistics#ai-answers-analyzed
Answers with citations
77.6%
77.6% of measured AI answers included at least one surfaced citation.
Cite this statistic
77.6% of measured AI answers included at least one surfaced citation. Source: Foglift Research, GEO Statistics Report 2026 (n=62,679 AI answers). https://foglift.io/research/generative-engine-optimization-statistics#citation-inclusion-overall
Average citations per answer
5.98
AI answers surfaced 5.98 citations on average.
Cite this statistic
AI answers surfaced 5.98 citations on average. Source: Foglift Research, GEO Statistics Report 2026 (n=62,679 AI answers). https://foglift.io/research/generative-engine-optimization-statistics#citations-per-answer-overall
Query fan-out multiplier
29.35x
Each tracked source query produced 29.35 distinct query fan-outs on average.
Cite this statistic
Each tracked source query produced 29.35 distinct query fan-outs on average. Source: Foglift Research, GEO Statistics Report 2026 (n=3,245 workspace-scoped source queries and 95,232 distinct fan-outs). https://foglift.io/research/generative-engine-optimization-statistics#query-fanout-multiplier
Largest cited-domain share
1.8%
youtube.com was the most-cited domain, accounting for 1.8% of all surfaced citations.
Cite this statistic
youtube.com was the most-cited domain, accounting for 1.8% of all surfaced citations. Source: Foglift Research, GEO Statistics Report 2026 (n=374,786 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
11,082
Foglift measured 11,082 successful ChatGPT answers.
Cite this statistic
Foglift measured 11,082 successful ChatGPT answers. Source: Foglift Research, GEO Statistics Report 2026 (n=11,082 ChatGPT answers). https://foglift.io/research/generative-engine-optimization-statistics#chatgpt-answer-volume
ChatGPT citation inclusion rate
94%
94% of measured ChatGPT answers included at least one surfaced citation.
Cite this statistic
94% of measured ChatGPT answers included at least one surfaced citation. Source: Foglift Research, GEO Statistics Report 2026 (n=11,082 ChatGPT answers). https://foglift.io/research/generative-engine-optimization-statistics#chatgpt-citation-rate
ChatGPT average citations
3.29
ChatGPT surfaced 3.29 citations per answer on average.
Cite this statistic
ChatGPT surfaced 3.29 citations per answer on average. Source: Foglift Research, GEO Statistics Report 2026 (n=11,082 ChatGPT answers). https://foglift.io/research/generative-engine-optimization-statistics#chatgpt-average-citations
Claude answer sample
9,831
Foglift measured 9,831 successful Claude answers.
Cite this statistic
Foglift measured 9,831 successful Claude answers. Source: Foglift Research, GEO Statistics Report 2026 (n=9,831 Claude answers). https://foglift.io/research/generative-engine-optimization-statistics#claude-answer-volume
Claude citation inclusion rate
60.7%
60.7% of measured Claude answers included at least one surfaced citation.
Cite this statistic
60.7% of measured Claude answers included at least one surfaced citation. Source: Foglift Research, GEO Statistics Report 2026 (n=9,831 Claude answers). https://foglift.io/research/generative-engine-optimization-statistics#claude-citation-rate
Claude average citations
2.42
Claude surfaced 2.42 citations per answer on average.
Cite this statistic
Claude surfaced 2.42 citations per answer on average. Source: Foglift Research, GEO Statistics Report 2026 (n=9,831 Claude answers). https://foglift.io/research/generative-engine-optimization-statistics#claude-average-citations
Perplexity answer sample
15,949
Foglift measured 15,949 successful Perplexity answers.
Cite this statistic
Foglift measured 15,949 successful Perplexity answers. Source: Foglift Research, GEO Statistics Report 2026 (n=15,949 Perplexity answers). https://foglift.io/research/generative-engine-optimization-statistics#perplexity-answer-volume
Perplexity citation inclusion rate
88.9%
88.9% of measured Perplexity answers included at least one surfaced citation.
Cite this statistic
88.9% of measured Perplexity answers included at least one surfaced citation. Source: Foglift Research, GEO Statistics Report 2026 (n=15,949 Perplexity answers). https://foglift.io/research/generative-engine-optimization-statistics#perplexity-citation-rate
Perplexity average citations
9.45
Perplexity surfaced 9.45 citations per answer on average.
Cite this statistic
Perplexity surfaced 9.45 citations per answer on average. Source: Foglift Research, GEO Statistics Report 2026 (n=15,949 Perplexity answers). https://foglift.io/research/generative-engine-optimization-statistics#perplexity-average-citations
Gemini answer sample
11,541
Foglift measured 11,541 successful Gemini answers.
Cite this statistic
Foglift measured 11,541 successful Gemini answers. Source: Foglift Research, GEO Statistics Report 2026 (n=11,541 Gemini answers). https://foglift.io/research/generative-engine-optimization-statistics#gemini-answer-volume
Gemini citation inclusion rate
52.4%
52.4% of measured Gemini answers included at least one surfaced citation.
Cite this statistic
52.4% of measured Gemini answers included at least one surfaced citation. Source: Foglift Research, GEO Statistics Report 2026 (n=11,541 Gemini answers). https://foglift.io/research/generative-engine-optimization-statistics#gemini-citation-rate
Gemini average citations
4.9
Gemini surfaced 4.9 citations per answer on average.
Cite this statistic
Gemini surfaced 4.9 citations per answer on average. Source: Foglift Research, GEO Statistics Report 2026 (n=11,541 Gemini answers). https://foglift.io/research/generative-engine-optimization-statistics#gemini-average-citations
Google AI Overview answer sample
14,276
Foglift measured 14,276 successful Google AI Overview answers.
Cite this statistic
Foglift measured 14,276 successful Google AI Overview answers. Source: Foglift Research, GEO Statistics Report 2026 (n=14,276 Google AI Overview answers). https://foglift.io/research/generative-engine-optimization-statistics#google-ai-overview-answer-volume
Google AI Overview citation inclusion rate
84.2%
84.2% of measured Google AI Overview answers included at least one surfaced citation.
Cite this statistic
84.2% of measured Google AI Overview answers included at least one surfaced citation. Source: Foglift Research, GEO Statistics Report 2026 (n=14,276 Google AI Overview answers). https://foglift.io/research/generative-engine-optimization-statistics#google-ai-overview-citation-rate
Google AI Overview average citations
7.51
Google AI Overview surfaced 7.51 citations per answer on average.
Cite this statistic
Google AI Overview surfaced 7.51 citations per answer on average. Source: Foglift Research, GEO Statistics Report 2026 (n=14,276 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
50.8%
50.8% of crawler requests classified as training, indexing, or user-fetch activity were training.
Cite this statistic
50.8% of crawler requests classified as training, indexing, or user-fetch activity were training. Source: Foglift Research, GEO Statistics Report 2026 (n=342,774 classified crawler requests). https://foglift.io/research/generative-engine-optimization-statistics#crawler-training-share
Indexing crawler share
42.1%
42.1% of crawler requests classified as training, indexing, or user-fetch activity were indexing.
Cite this statistic
42.1% of crawler requests classified as training, indexing, or user-fetch activity were indexing. Source: Foglift Research, GEO Statistics Report 2026 (n=342,774 classified crawler requests). https://foglift.io/research/generative-engine-optimization-statistics#crawler-indexing-share
User-triggered fetch crawler share
7.1%
7.1% of crawler requests classified as training, indexing, or user-fetch activity were user-fetch.
Cite this statistic
7.1% of crawler requests classified as training, indexing, or user-fetch activity were user-fetch. Source: Foglift Research, GEO Statistics Report 2026 (n=342,774 classified crawler requests). https://foglift.io/research/generative-engine-optimization-statistics#crawler-user-fetch-share
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