Comparisons
Four honest reads, one per product a founder actually weighs this against.
Two rules hold on every page here. Each claim about the other product comes from their own public page and carries the date it was read, and no figure of any kind is attributed to them, because a number pinned to a named company is a claim about a business whose books we do not have. Each page also opens with what they do better, because a table where one column is all ticks is an advertisement.
Cluster is infrastructure for an agent you already run. Sales as Code is the revenue org you run before you hire one. Which half of go-to-market you need decides it.
Pick Cluster if: Your pipeline is empty and your next job is filling it. Buy them, and come back when the accounts need working.
Clay builds the list and enriches it. Sales as Code works the accounts once you have them, across nine roles, on a schedule.
Pick Clay if: Your problem is building and enriching lists, and you have somebody whose job is to sit in the tool.
Apollo is a contact database with sequences and a dialer on top. Sales as Code is nine scheduled roles that work the accounts you already have.
Pick Apollo if: You need contacts and a way to work through them at volume, and the roles past the first meeting are already covered by people.
An AI SDR plays one role and mostly sends on its own. Sales as Code plays nine and sends nothing without your click.
Pick an AI SDR if: Top of funnel volume is the only thing you are short of, and you have somebody who will read the outbox.