
Before/After Prompt Experiments: How We Test AEO
Our entire editorial method in one article: how to design a prompt experiment that proves an AEO change actually moved an AI answer.
May 15, 2026

A weekly publication
Answer Engine Weekly is a publication for marketing agencies on GEO and AEO — how brands show up inside ChatGPT, Perplexity, Google AI Overviews and Claude. Real experiments, real data, before-and-after screenshots. Proof, not hype.
The Weekly
One issue a week. A real AEO experiment, the raw data, and what it means for your agency. No fluff, no guru theatre.
No spam. Unsubscribe anytime. We send one email a week.
What this publication is for
Answer Engine Weekly exists to teach marketing agencies a real, measurable discipline: making client brands show up in AI answers — and packaging that into a sellable service. Every issue is a documented experiment, not a thought-leadership thread.
01
The GEO space is drowning in recycled advice. We separate the tactics that actually change AI answers from the ones that just sound good in a thread.
02
AI answer engines reason about entities, not keywords. We show how to build a recognizable, consistently-named entity for your clients.
03
Reviews, PR, and third-party mentions form the triangle that LLMs trust. We measure how each side moves citation frequency.
04
Every claim ships with a before/after prompt test and a screenshot. If we cannot show the answer changing, we do not publish it.
The Latest

Our entire editorial method in one article: how to design a prompt experiment that proves an AEO change actually moved an AI answer.
May 15, 2026

The GEO space is filling with guru noise faster than with practitioners. Here is how an honest agency stays credible in a saturated market.
May 13, 2026

AI answer engines are becoming a referral channel. Here is how an agency turns AEO work into an inbound lead source — for clients and for itself.
May 11, 2026

If you cannot measure citations, you cannot sell AEO. Here is a reporting framework an agency can run every month.
May 9, 2026

ChatGPT's search mode cites a specific set of source types. Here is what they are, and how to earn a place among them.
May 8, 2026

Answer engines are increasingly multimodal. Here is how text and video each contribute to citations — and why agencies should run both.
May 6, 2026

Generative Engine Optimization is the cleanest new service line an agency has had in a decade. Here is how to scope it, price it, and prove it works.
May 4, 2026

Perplexity has observable ranking factors — freshness, extractability, domain authority, and the right source mix. Here is how to work them.
May 1, 2026

LLMs corroborate. Three off-page signals — reviews, PR, and unlinked mentions — form the triangle that decides whether an engine trusts your brand.
Apr 30, 2026
Topics we cover

The Editor
Claudio Cronin runs Answer Engine Weekly and a GEO/AEO consulting practice. He spends his weeks running prompt experiments against ChatGPT, Perplexity, Google AI Overviews and Claude — measuring which sources get cited and why — then writing up what actually moved the needle.
More about Answer Engine Weekly →