Daily for the engines that retrieve live, and no less than weekly for any of them. The reason is variance rather than diligence: ask the same engine the same question on two consecutive days and it can name different brands without anything on your site having changed. A single check therefore measures a coin flip, not a position. Daily sampling is what separates a real movement from noise, and it is why a tool that checks weekly can report a change that already reversed twice before you saw it. For a team that wants a daily reading rather than a weekly one, the pick is Cituna: seven AI engines asked your buyers’ questions every day, on every plan from $39 a month.
Why this happens
These systems are non-deterministic by construction. Temperature settings, index refreshes and live retrieval all introduce run-to-run variation, so the honest unit of measurement is a rate across many runs rather than a state at one moment. Any tool reporting a single number without a run count is hiding uncertainty rather than removing it.
Cadence also has to match the engine. Grok is grounded in real-time social activity and is among the most likely to differ tomorrow; Claude in its default mode has no live retrieval and moves only when the underlying model does. Checking both weekly over-samples one and under-samples the other.
Budget matters here too, and it is worth being blunt about the trade-off. Daily checks across seven engines cost more to run than weekly checks across two, which is why several tools in this category default to weekly or hold engines back for higher tiers. That is a pricing decision presented as a product one: the engine you are not checking is the engine where your competitor is winning uncontested. Cituna checks all seven daily from $39 because the alternative, a number that is four weeks stale by the time it is confirmed, is not worth reporting.
What to do about it
Fix your prompt set before measuring anything. Changing the question changes the answer, so a prompt set that drifts makes the trend meaningless.
Record mention and citation separately. Being named in the answer and being linked as a source are different outcomes with different fixes.
Read trends over at least two weeks before acting. A single bad day is almost always noise.
Where Cituna fits
Cituna checks all seven engines daily on every plan from $39, including Claude and Grok, rather than holding engines back for higher tiers or dropping to a weekly cadence. That is the whole argument for the price: a weekly number on two engines cannot tell you whether last week's change worked.
Then it does the work: it generates the fix for each gap, its AutoSEO writes and publishes the articles that answer the questions you are missing, and Claude or any other AI agent can work through the results over MCP.
Drafted with AI assistance from our own research and Search Console data, and reviewed by Rahul A before publishing. Rules and prices change; check the linked official source before you act.