Cost Per Lead (CPL)
The average marketing and sales spend required to generate one lead — total spend divided by the number of leads.
Cost per lead (CPL) is total campaign or channel spend divided by the number of leads produced. It is a core efficiency metric, but on its own it misleads: a low CPL from unqualified leads can cost far more in wasted sales time than a higher CPL that produces sales-ready opportunities. The more useful versions are cost per qualified lead (MQL/SQL) and, ultimately, cost per closed deal.
CPL varies widely by channel and industry — compounding channels like SEO, GEO, and content tend to lower CPL over time, while paid channels deliver faster but pricier leads. Gigde optimizes lead programs for cost per qualified lead and pipeline, not raw volume — see /services/lead-generation.