Performance08 February 2026 · 9 min read

Performance without the vanity

Why we measure CAC efficiency by cohort, not by channel — and why most performance dashboards are designed to lose.

Priya Mahajan

Halftone Studio

Most performance dashboards are designed to make the marketer look good. Channel-level CPA. Optimised attribution windows. Ratios from before deduplication.

We measure cohort efficiency in your warehouse, on your data, with a model your CFO can defend. Most clients see CAC fall 30% just from rebuilding the measurement layer — before we touch a creative.

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