What percentage of AI answers include citations?

63.2% of AI answers to commercial buying prompts include at least one citation, measured across 1,380 sampled answers from 3 model providers in Rank.ai's published benchmark.

How many sources does an AI answer cite on average?

When a model cites at all, it returns 6.5 cited URLs per answer on average, based on 5,652 citation observations.

How concentrated are AI citations?

The 10 most-cited domains capture 12% of all citation observations, out of 2,463 unique domains cited.

Where does this data come from?

Rank.ai puts a fixed set of buying questions to the OpenAI, Anthropic and Google model APIs, with Rank.ai's own web search, re-running about one category a day in rotation. It records the returned citations URL by URL and publishes each snapshot that passes its checks, with the method and a page for every cited domain.

AI search statistics

Name: AI search statistics
Creator: Rank.ai
License: https://www.rank.ai/methodology
Keywords: AI search statistics, AI citations, LLM citation rate, generative engine optimization, AI answer citations

6.5

URLs cited per answer on average, when a model cites at all.

5,652 citation observations over 872 cited answers.

#citations-per-answer

2,463

unique domains cited across 4,556 distinct URLs in the current benchmark.

Across 460 tracked buying prompts in 31 categories.

#unique-domains

12%

of all AI answer citations go to the 10 most-cited domains.

reddit.com leads with 146 citation observations.

#concentration

93%

of Gemini's answers cite sources, the highest rate of any tracked provider.

460 answers, 1,659 unique domains cited.

#provider-citation-rate

1,380

answers in the latest snapshots, across 3 providers.

One answer per question and model API in each snapshot that passes its checks.

#benchmark-size

Provider	Model versions	Answers	Cited answers	Citation rate	Citations / cited answer	Unique domains
Gemini	google/gemini-2.5-flash · google/gemini-3.1-flash-lite	460	426	92.6%	7.1	1,659
OpenAI	openai/gpt-4o-mini · openai/gpt-6-luna	460	414	90.0%	6.0	1,380
Anthropic	anthropic/claude-haiku-4-5 · anthropic/claude-haiku-5.5	460	32	7.0%	4.8	114

See how often AI names you.

Enter your website. In about two minutes, Rank.ai asks ChatGPT, Claude and Gemini 12 questions your customers ask and grades how often they name you.

Your grade out of 100How often AI names you, cites your site, and how high it ranks you.
Who gets namedEvery competitor in the answers, most named first.
The pages AI readsThe sources behind each answer.
Three fixesWhat to fix first, with a brief for the first article.

AI search statistics

How often AI answers cite sources

Citation rates by model provider

See how often AI names you.