These are the best marketing agents

If you’ve been dabbling in AI agents, here’s the truth:

Most agents are just toys.
They look cool. They demo well. But they don’t drive revenue.

These ones do:

The CRO Scientist
Finds your biggest drop-offs, scores test ideas by impact, confidence, and ease (ICE), then runs the winners. This one got us 5 tests in 1 night—with projected revenue lifts before we even hit go.

The Webinar Producer
B2B goldmine. Finds hot topics, writes the invites, builds the decks, follows up post-event. We’ve shipped high-converting webinars with less than 10% human input.

The ABM Orchestrator
No more manual list building or ad personalization. This one builds your ICP list, spins up custom ads, and optimizes daily. A full-funnel hunter.

The Persona Refiner
Clusters high-LTV customers, rewrites your messaging, and redefines your ideal customer profile every week—so your paid strategy stops guessing.

I just dropped a video with 12 of my highest-leverage agents. Check it out to see what else we’re using at Single Grain. These are the marketing agents actually worth building.

To building smarter,
Eric Siu