The economics that should drive the decision
Channel choice controls cost more than effort does
Founders love to believe that working a channel harder is what lowers its cost. Sometimes it is. Far more often, the channel you chose set your unit economics before you sent a single email, and no amount of grinding moves it much. The cost gaps between B2B channels are wider than almost anyone assumes, and they are the first thing your decision should reckon with.
Start with cost per lead. Organic search is the cheapest channel in the mix at roughly 52 dollars per lead. Paid search runs about 187 dollars, more than three times as much. Account-based marketing sits at the top end around 241 dollars. Partner-sourced leads, the ones that come through referrals and integrations, land around 89 dollars and are one of the quiet bargains of the whole landscape. The spread here is not noise, it is the difference between a sustainable model and a treadmill.
Volume and conversion do not travel together
It would be convenient if the cheapest channel were also the biggest, but they rarely are, and you have to hold both numbers in your head at once. Paid search still drives the single largest share of B2B lead volume at 22 percent, which is why so many founders default to it. Worth noticing, though: that share has fallen three points since 2024, while partner-sourced leads have climbed to 9 percent of the mix. The centre of gravity is drifting toward the asset and relationship channels, not away from them.
The other half of the picture is what happens to those leads once they arrive, and that is where raw volume gets humbling. The median MQL-to-SQL conversion rate has fallen to about 9.8 percent, down from 13.1 percent in 2024. The leads the market is producing are getting weaker, not stronger. The encouraging counterpoint is that adding behavioural or intent signals lifts that figure back up to 16.4 percent. Quality and qualification now matter more than the sheer count of leads at the top.
Read the two numbers together
The move is to stop optimising for any single metric and read cost and conversion as a pair. A cheap channel that converts poorly can still beat an expensive one that converts well, or lose to it, and you cannot know which until you put both numbers side by side for your business.
This is also exactly why a paid-only stack is a trap. It buys you the largest volume share and the fastest start, but it has no compounding floor underneath it, so your blended cost can only hold flat or rise. Pairing a coupon channel with at least one asset channel is not a nice-to-have. It is the only structure where your economics improve over time instead of slowly bleeding.