Marketing Science

Before you buy the AI marketing agent, learn the funnel math

"One conversation replaces a $10,000/month marketing team." Maybe. But whether ANY tool — human or AI — makes money is decided by four conversion rates and one cost line. Master those first; the tool decision becomes arithmetic.

The funnel simulator

Drag to orbit the funnel. Each disc is a stage; its size tracks how many people survive to it. Tune the rates and watch customer acquisition cost (CAC) react — this is the whole game.

Drag to rotate · wheel/pinch to zoom

300Leads
75Trials
15Customers
$200CAC

What an AI agent genuinely automates — and what it can't

Realistic today

  • Drafting positioning docs, ad variants, and landing-page copy in hours, not weeks
  • Repurposing one piece of content into 10 platform-specific formats
  • Producing video/image ad creative at near-zero marginal cost
  • A/B test setup and reporting summaries
  • Consistent brand tone across hundreds of assets

Still on you

  • Knowing your customer well enough to judge which message is true
  • Distribution: an agent can write posts, not earn an audience
  • Strategy under constraint — what NOT to do this quarter
  • Accountability when claims are wrong or off-brand
  • The conversion rates themselves — tools produce assets, customers decide

The 5-question test for any "AI marketing team"

  1. Which funnel number does it claim to move? If the pitch can't name a stage (visitors, lead rate, trial rate, close rate), it's selling activity, not outcomes.
  2. What's the counterfactual cost? Compare against a freelancer or your own 5 hours — not against a $10k/month agency you were never going to hire.
  3. Can you measure it in 30 days? Run it on one channel with a holdout. If CAC doesn't improve, the demo was the product.
  4. Who reviews output before publishing? Unreviewed AI marketing at scale is a brand-risk generator.
  5. Does it lock in your data? Prompts, audiences, and creative history should export freely.
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