Generative Engine Optimization, primary research only.
We test what other publications copy. Reproducible methodology, open datasets, editorial wall — for the brands and operators who refuse to guess.
Latest
All articles →- technical · 25 May 2026Cornerstone
llms.txt: Spec, 100-Domain Adoption Audit, and Setup
We audited 100 top developer-tools and SaaS sites for an llms.txt file. Only 37 of them serve one at the apex — and the gap is concentrated in the places you might expect it not to be. The full spec, the audit, and a 10-minute setup.
- foundations · 17 May 2026Cornerstone
What is Generative Engine Optimization (GEO)?
An honest taxonomy of the discipline that is reshaping how the web is read — by both humans and machines.
Pillars
Foundations
Theory, mechanics, and history of AI search. How LLMs retrieve, rank, and cite.
Technical
Server-side, code-level, infra-level. llms.txt, robots, schema, structured data.
Content Engineering
Content format, structure, writing for LLM ingestion.
Measurement & Analytics
Tools, metrics, methodology. Reproducible benchmarks.
Brand & Behavior
User behavior in AI search. Brand strategy.
Case Studies
Brand-by-brand teardowns. Sector benchmarks.
Pulse
Newsroom: model releases, leaks, papers.
Cornerstone
- technical
llms.txt: Spec, 100-Domain Adoption Audit, and Setup
We audited 100 top developer-tools and SaaS sites for an llms.txt file. Only 37 of them serve one at the apex — and the gap is concentrated in the places you might expect it not to be. The full spec, the audit, and a 10-minute setup.
- foundations
What is Generative Engine Optimization (GEO)?
An honest taxonomy of the discipline that is reshaping how the web is read — by both humans and machines.