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Everything we know about GEO, written down.

The GEO Guide

Generative Engine Optimization is the practice of making sure large language models cite, recommend and accurately represent your brand in AI-generated answers. This is the short version.

  1. 01Why AI answers are a distribution channel4 min
  2. 02The dimensions of GEO7 min
  3. 03Machine access: robots.txt, llms.txt, rendering6 min
  4. 04Answerability and structured content8 min
  5. 05Entity consistency and the knowledge graph5 min
  6. 06Citations, reviews and third-party authority6 min
  7. 07Measuring share of voice against competitors5 min
  8. 08Building a 90-day GEO roadmap6 min

Blog

Field notes on AI search

Research

We asked 5 models 'best CRM for a small team' 300 times. Here is what happened.

Aug 2026 · 9 min read

Technical

Your pricing page is probably invisible to ChatGPT. Here is the fix.

Aug 2026 · 5 min read

Technical

llms.txt, explained: what to put in it and why it matters

Jul 2026 · 6 min read

Strategy

Share of voice is the only GEO metric your CEO will remember

Jul 2026 · 4 min read

Case studies

Before and after

Northwind

Analytics

547192 days

From invisible to shortlisted on every model.

Halcyon Labs

DevTools

476988 days

Prompt evidence got engineering to prioritise it.

Cedar & Vine

DTC

617890 days

Doubled our AI-assisted revenue in a quarter.

FAQ

Common questions

Weighted dimensions — AI Visibility, Brand Prominence, Recommendation Performance, Competitive Position, Citation Visibility, Authority & Trust, Technical GEO and Entity Consistency — each scored 0–100 and calibrated against a benchmark set. The exact set of dimensions comes from the audit backend.
ChatGPT (GPT-4o), Claude, Perplexity, Google AI Overviews / Gemini and Microsoft Copilot, depending on which providers the audit backend is configured to run. Each prompt is run multiple times per model and aggregated.
You can run a free audit and see your score without signing up. An account is used to save audits and track progress over time.
SEO optimises for ranked links on a results page. GEO optimises for being cited, recommended and represented accurately inside an AI-generated answer, where there is often no list of links at all.
Typically 1–4 minutes. The processing screen shows live status while the backend crawls your site and probes the configured AI engines.
Yes. Re-running produces a fresh score against the current state of your site and the models.

Documentation

How the audit works

phazeAi measures how large language models and AI answer engines perceive, retrieve and represent a brand. It combines live model probing, citation extraction and a technical crawl.

  • Prompts

    Buyer-intent prompts derived from keyword research and interviews

  • Models

    The AI engines the audit backend is configured to run

  • Runs

    Each prompt run multiple times per model and aggregated

  • Crawl

    Your site fetched both rendered and raw-HTML

  • Scoring

    Weighted dimensions, 0–100, calibrated against a benchmark set