About

Who publishes SI Plugins, how it stays independent, and how to reach us.

Search last measured Nov 7, 2026Catalog compiled Nov 7, 2026

Publisher

SI Plugins (Superintelligence Plugins) is published by Legitimate LLC as a sibling of SuperIndex, which ranks frontier AI models. SuperIndex asks which model is best; SI Plugins asks which tools make an agent better.

Independence

  • No affiliate links, no sponsors, no paid placement. Vendors are linked plainly to their own sites.
  • We paid list price, or used public free tiers, for every API we measured. No vendor saw results before publication.
  • Where we haven't measured something, the page says so, and a catalog order is never presented as a score.

Corrections and contact

If a number is wrong, a price has changed, or you run a tool we should measure, write to [email protected]. Corrections are dated on the page they change.