What probably matters to youSection of the release
What
The guidance for writing plugin evals now names the fields that actually exist: suite.plugins for checking the plugin loaded, and costUsd for the cost figure in aggregate-result.json. It previously said plugins and cost_usd.
Evidence
The pilot's top-level \costUsd\ in \aggregate-result.json\``
Strings lifted out of the shipped bundle, so the claim above can be checked against them.