I think metered pricing makes sense for a service that's $10/mo (which the base Kagi w/ AI features is).
However, Kagi search unlimited is $5/mo. And, especially because of the whole "payment providers taking their cut" thing, I'd argue for services that are $5/mo or under, metered pricing doesn't really make sense.
Finally, I'd argue that this approach has other advantages over metering, even for higher-cost services:
* It's easier for devs to implement. Just one search needs to be recorded a month for an audit trail, rather than all search history.
* Keeping a search history for users is not needed at all, really (or, again, at most, one search per month). It's much better for user privacy.
* Most countries/states would have much more luck passing legislation forcing companies to implement this than metering, as well as enforcing it.