Definition
Time to first citation (TTFC) is the elapsed time between publishing a page and the first time an AI search engine cites that page as a source in a generated answer. It is the AI search counterpart to time-to-index in traditional SEO, and it answers a question every content team asks: how long before this page starts showing up?
Public measurements are still thin, so treat any benchmark as context. The most transparent one is Semrush's December 2025 experiment: 81 FAQ-style pages published in September 2025 on its own high-authority blog, tracked daily for 30 days. Google AI Mode cited 29 pages (36%) within a day of publication and peaked at 48 pages around day six, but only 21 were still cited on day 30. ChatGPT search started slower, citing 8 pages on day one, 14 after a week and 34 (42%) by day 30, and it mostly kept the citations it gave. Many pages were never cited by either engine. The lesson is that TTFC differs by engine, that a fast first citation can be short-lived, and that a strong domain is a best case rather than a typical one.
TTFC breaks into stages you can diagnose separately:
- Crawl: an AI crawler or Googlebot or Bingbot fetches the page. AI crawler logs show the first fetch per bot.
- Index: the page enters a retrievable index. Bing says it reads submitted sitemaps at least daily, and IndexNow notifies it of individual changes.
- Retrieval: the page comes back for one of the sub-queries the engine runs for a relevant prompt.
- Selection: the engine chooses to cite it over competing pages.
A page uncrawled after two weeks has a discovery problem, which XML sitemaps, IndexNow and internal linking from frequently crawled pages address. A page crawled on day one but uncited on day thirty has a retrieval or selection problem, which points at content, structure or authority.
To measure TTFC you need daily answer data for prompts the page should win, and the first date any tracked answer cites the URL. Report it per cohort, for example all pages published in a month, as a median plus a 75th or 90th percentile, because the distribution has a long tail. Count pages that are never cited explicitly instead of dropping them, or the median will look better than reality. In Promptwatch, the Citation Trends view shows when each page was first cited in the trailing 90 days and how many days it took to reach its peak citation share.
TTFC is the start of a page's citation life, not the whole of it. Pair it with citation decay: a content half-life study found that of the landing pages ChatGPT cited on the study's first day, 78% were still cited 30 days later, while half of the news pages had dropped out after 36 days. A page that is cited fast and dropped fast may be worth less than one that takes three weeks and stays.
Examples of Time to First Citation
- A SaaS team logs the first citation date for each of the 40 help articles it published in March. The cohort median is 9 days, the 90th percentile is 41 days, and 11 pages are still uncited at day 60, which it reports as a separate line.
- Crawler logs show OAI-SearchBot fetched a new comparison page within hours of publishing, yet no tracked ChatGPT answer cites it for three weeks. The team treats it as a selection problem and rewrites the page around the sub-queries in its query fan-outs.
- A publisher adds IndexNow pings to its CMS publish hook and compares the median TTFC in Copilot answers for the next month's articles with the month before.
- An analyst sees a page cited in Google AI Mode the day after launch and gone by day 20, and reports both its TTFC and how many days the citation lasted.
