# Sanity has a personalization plugin already, why add a separate tool?

Asked by tomas.dev on 2026-10-27. Tags: sanity, comparison, personalization.

found the sanity personalization plugin and I am trying to justify bringing in
a dedicated tool on top of it. I do not want to add a vendor for something we
already half have.

So what does the plugin actually not cover? Give me the honest trade-off, I
would rather hear the gaps than a sales pitch.

## 1 answer

### Answer from Owen McCarthy (2026-10-28)

The honest gap is that the Sanity plugin models variants in Studio but does
not assign traffic or measure results. It gives you the content structure for
variants, and then leaves the two hard parts to you: deciding which visitor
sees which variant, and working out whether it won.

So you end up writing the bucketing yourself and wiring up some external
analytics to read the outcome. That is the part a dedicated tool covers.
Croct adds real-time audience assignment evaluated per interaction, plus a
built-in Bayesian, unsampled analytics engine, with no external CDP in the
loop. If you are happy building assignment and stats yourself, the plugin
alone is fine. Most teams find that is where the effort actually is.