I'd like to suggest Kagi consider a tiered pricing model based strictly on recognition.
It seems to me that Kagi has a lot of very dedicated fans, and many users who want to see it grow. Offering users of higher means or higher will the ability to pay more could help Kagi offset the costs of running the service and could delay or eliminate the need to raise rates in the future.
Just to lay out a rough example, a base rate would exist for Kagi Search. Then a second tier at twice the base rate could include search and the knowledge that a user is putting extra resources towards Kagi. A third tier at five times the base rate could include recognition on a VIP page and a little crown next to a subscribers username on Kagi, in Discord, or on this site.
Assuming a $10/mo base rate, the tiers in my example would be:
Kagi Search: $10/mo
Kagi Search & Help Support Kagi: $20/mo
Kagi Search, Help Support Kagi, & VIP Recognition: $50/mo
Again, this is just a rough idea and further thought should be put into these details.