Highlights
- The dataset: This report draws on over 550,000 AI source citations, collected with prompts specific to the online education industry. The underlying AI responses, from four AI models, were gathered in 12 countries throughout Q2 2026.
- Reddit held #1 start to finish: The one genuinely stable signal while the ranking beneath it reshuffled.
- Reddit alone makes up 19% of ChatGPT's citations: The most concentrated single source of any model.
- 51% of Google AI Overview's citations are from commercial domains: Vendor and platform pages, making Google AI Overview the most commercial model.
- ~13% average overlap between any two models: Any two of the four share only about an eighth of their top-20 cited online-education domains.
- 89% of Microsoft Copilot's Swedish citations are local: Microsoft Copilot cites local .se domains 89% of the time on Swedish prompts, Grok just 64%.
Which sources should you target to get cited as an online education brand?
Each model's top-cited domains tell their own story.
| Model | Top sources | Citation character |
|---|---|---|
| ChatGPT | reddit.com (18.8%), techradar.com, coderhouse.com, coursera.org, en.wikipedia.org | Community + reference |
| Microsoft Copilot | utbildningslistan.se (3.0%), screenapp.io, deutschlandtest.de, pracskills.com.au, straight.com | Local ranking & comparison sites |
| Google AI Overview | youtube.com (3.6%), reddit.com, ispring.com, pracskills.com.au, coursera.org | Video + commercial platforms |
| Grok | reddit.com (4.7%), youtube.com, coursera.org, linkedin.com, ispring.com | Social + course aggregators |
Reddit, YouTube, and Coursera are the closest thing to common ground, they appear across several models' top tiers, but their weight varies wildly, from 18.8% of ChatGPT's citations to under 2% of Google AI Overview's. Microsoft Copilot shares almost none of this: its most-cited source is a Swedish course directory.
How have AI source rankings changed over time in the online education industry?
We split the observation window at its midpoint (early May 2026) and compared the most-cited domains in each half. The ranking is far from static; the reliable signal is relative rank by within-half share, not raw volume, and we read the movement as directional rather than definitive.
Reddit held the top spot throughout, the one genuinely stable signal. Beneath it, social and Q&A domains (quora.com, linkedin.com) slid down the ranking, while comparison pages (techradar.com, coderhouse.com, thinkmedia.de) rose. We read the reshuffle as directional, not proof that these sources gained or lost favor. Track the current picture in the live AI visibility rankings.
What type of content do AI models cite for online education?
The models differ not just on which domains but on what type of content they trust. We classified every cited source into content categories.
Google AI Overview is the commercial-platform engine: more than half its citations go to vendor and platform pages (51%), the highest of any model. ChatGPT is the most community-driven, sending nearly a quarter of its citations to user-generated content (24%), overwhelmingly Reddit. Microsoft Copilot is the most editorial, leaning on ranking and comparison sites (24%) and the most reference-heavy of the four. Grok sits in between, but its sheer volume means it cites more of everything.
Do AI models cite local-language content for online education?
Outside English-speaking markets, models vary sharply in how often they cite local-country domains. Using country-code top-level domains as a proxy for local-language sourcing, the local-domain citation rate ranges from 68% (Swedish) down to 30% (Spanish). English prompts are excluded, English content overwhelmingly lives on generic domains.
Sweden and the Netherlands stand out, well over half of cited sources sit on local domains, reflecting mature local course-directory ecosystems (utbildningslistan.se, soofos.nl). Spanish is the least localized at 30%, unsurprising given that Spanish-language prompts span three markets (Spain, Mexico, Argentina) whose content sprawls across generic domains.
Which AI model relies most on local sources for online education?
The localization gap between models is large and consistent. Microsoft Copilot cites local-country domains far more often than Grok in nearly every language tested, a direct consequence of its reliance on country-specific directories.
Microsoft Copilot leans local in every market, it cites Swedish (.se) sources in 89% of Swedish-prompt citations. Google AI Overview relies on local sources strongly in Dutch and Swedish but produced no French-language coverage in this window (marked n/a). Grok and ChatGPT sit lower and flatter. For a platform competing in Sweden, the Netherlands, or Germany, local-language web presence pays off most on Microsoft Copilot and Google AI Overview, and comparatively little on ChatGPT or Grok.
Should online-education platforms optimize for each AI model separately?
Yes, almost entirely. When the four models answer the same online-education questions, their top-cited domains barely converge. We compared the 20 most-cited domains for each model and measured how much they share.
Grok and Microsoft Copilot are the most divergent pair, sharing barely 3% of their top sources, Microsoft Copilot's top tier is dominated by country-specific ranking and comparison sites (utbildningslistan.se, deutschlandtest.de, ugef.fr) that scarcely register for any other model. Optimizing for one model's citation surface leaves a brand almost entirely invisible on the others.
How many sources does each AI model cite per answer?
The models disagree even on how many sources to cite per answer.
Context
This analysis draws from Temso's AI visibility monitoring platform, which tracks how brands appear in AI model responses across ChatGPT, Microsoft Copilot, Grok, and Google AI Overview. The dataset covers online-education prompts ("best online course platforms," "best e-learning sites in [country/field]") across 12 countries and 7 languages over roughly sixteen weeks (March–June 2026).
It measures what AI models cite, not the underlying quality of any course or platform. These findings describe citation behavior for online-education prompts in the monitored markets, and may not generalize to all platforms, prompt types, or other industry verticals.
Methodology
How we measured this
We tracked four AI models responding to online-education prompts in local languages across 12 countries. Each response was parsed to extract source citations: the URLs, domains, and metadata referenced. Domain categories (editorial, commercial, UGC, reference, institutional) were assigned from a global domain registry. Cross-model overlap was measured using Jaccard similarity on each model pair's top-20 most-cited domains. Temporal analysis split the observation period at its midpoint and compared domain rankings in each half.
The analysis covers over 550,000 cited sources from 52,841 AI responses. Sample sizes exceeded recommended thresholds for every reported finding. Localization is measured by a country-code-domain proxy (the source records carry no detected content language), so those figures are directional and exclude English-language prompts, which sit overwhelmingly on generic domains. Model coverage varied across the observation window, so ranking movement is reported as relative ranks within each half.
Frequently asked questions
Do AI models cite different sources for online-education recommendations?
Yes, dramatically so. Any two of the four models share only about 13% of their top-20 cited online-education domains, so roughly seven in eight sources differ. Grok and Microsoft Copilot overlap the least, at just 3%.
Which AI model cites the most sources per answer for online education?
Grok, by a wide margin, about 27 cited sources per answer, versus roughly 11 for Google AI Overview and about 7 each for ChatGPT and Microsoft Copilot. That is a 3.8× gap between the most and least source-hungry models.
What kinds of websites do AI models cite for online education?
It varies sharply by model. Google AI Overview is the most commercial (51% of citations go to vendor and platform pages); ChatGPT is the most community-driven (24% user-generated content, mostly Reddit); Microsoft Copilot is the most editorial, leaning on ranking and comparison directories (24%).
Which single source matters most for AI visibility in online education?
Reddit. It is ChatGPT's single most-cited domain (18.8% of everything ChatGPT cites), appears in Grok's and Google AI Overview's top tiers, and held the #1 overall rank across the entire window. A strong Reddit presence is the closest thing to a cross-model bet in this sector.
Do online-education platforms need local-language web content for AI visibility?
For some models, yes. Microsoft Copilot cites local-country domains heavily (up to 89% on Swedish prompts) and Google AI Overview relies on local sources strongly in Dutch and Swedish, so local-language presence helps there. ChatGPT and Grok cite local sources less consistently, favoring English-language social and aggregator content.
Which AI model relies most on local sources for online education?
Microsoft Copilot. It cites local-country domains more than any other model in nearly every language tested, 45–89%, because its top sources are country-specific course directories and comparison sites. Grok relies on local sources least.
Is one AI ranking enough to optimize for in online education?
No. Because the models share only about 13% of their top sources and weight them very differently, Google AI Overview favors commercial platforms, ChatGPT favors Reddit, Microsoft Copilot favors local directories, visibility on one model does not transfer to the others. An AI-visibility strategy for online education has to be built model by model, and market by market outside English.
