One question, put to the two AI engines that hand back the pages they opened.
The question, as it was asked
“What are the best learning management systems for corporate training, compliance, and employee onboarding?”
asked Sep 18, 2026 · Perplexity and Google AI Overviews · US English
These are not the leaderboard's engines. The leaderboard and the debate ask ChatGPT, Claude and Gemini. This page asks Perplexity and Google, because they are the two that disclose what they read. What an engine reads here does not explain a rank there.
The companies each engine's answer named, in the order it first mentioned them. Order of mention is not a rank — neither engine ranked anything.
Ranked here, named by no engine
15 brands on our leaderboard were named by no engine that answered.
Named here, not on our leaderboard
1 company the engines named is not on our leaderboard at all.
Every page each engine retrieved while answering. Retrieved is not the same as relied on — the engines report the pages they pulled back, and no engine tells anyone which of them changed its answer.
Most-read sites
Every page retrieved
Most-read sites
Every page retrieved
Every company either engine named, plus every brand on our leaderboard. Across: how many engines opened the company's own site. Up: how many engines named it. Being read and being recommended turn out to be two different things.
engines that opened its site →
This is the first check for this category, so there is nothing to count across weeks yet. From the next one, each site carries how many of the last 5 checks it was retrieved in.
This page is about one question, not about the category. It says: when a buyer asks this exact question, here is what each engine retrieved and who each one named. It does not say these are the pages AI reads about this category — measured, one question finds only about a third of the sites the engines keep returning to across a whole market.
When an engine returns nothing — the call fails, Perplexity answers without searching, or Google shows no overview — it is asked again, up to 3 times in all. Whatever the last attempt gave is what is published, with the number of attempts beside it.
We do not open the retrieved pages. Everything here comes from what the engines themselves handed back. Both engines are asked from the United States, in English.
These are not the leaderboard's engines. The leaderboard and the debate ask ChatGPT, Claude and Gemini. This page asks Perplexity and Google, because they are the two that disclose what they read. What an engine reads here does not explain a rank there.
Methodology version 1.0.0Read the full methodology →
This is the first check for this category, so there are no earlier weeks to link to yet. From the next one, each week's check is kept on that week's archive page.