Every GEO claim, cross-checked against a receipt.
A living reference for Generative Engine Optimization. No hot takes, no vendor spin — each fact links to primary research so you can verify before you cite.
Filter and view the GEO matrix
GEO Matrix — myths versus receipt-backed facts
Emerging tactics we're monitoring
These have no industry consensus yet. Impact scores are baseline hypotheses, not verified benchmarks — treat them as experiments, watch how the community moves, then decide.
Vercel, Anthropic docs, and Stripe docs ship .md variants for agent consumption. Community anecdote is positive for agent workflows; no controlled citation-lift study yet.
Publishers (Anthropic, Cloudflare, Vercel) ship llms.txt as a courtesy index. No AI vendor has confirmed retrieval weight; independent tests show zero measurable citation lift.
Vendors floating the idea (a few AEO tool marketers) vs. established webmaster guidelines that treat bot/human divergence as cloaking. Consensus: risky until an engine explicitly permits it.
Get new receipts as they land.
Every time a claim is added, updated, or corrected, you'll hear about it — plus a Friday digest of what moved.