> ## Documentation Index
> Fetch the complete documentation index at: https://docs.get3rd.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Welcome to 3RD

> Be the answer AI gives. 3RD shows how your brand appears across ChatGPT, Claude, Gemini, and Perplexity, and exactly what to do to show up more.

Your audience isn't only searching Google anymore. They're asking **ChatGPT** for product recommendations, researching with **Perplexity**, comparing options in **Google AI Overviews**, and getting answers from **Gemini**, **Claude**, **Copilot**, and **Grok**. When those assistants answer a buyer's question, your brand is either part of the answer — or it isn't.

The marketing funnel is collapsing into a single prompt. Someone asks "what's the best running shoe for me?" and the model answers with three names. If you're one of them, you're in the buyer's consideration set. If you're not, you were never in the room — and unlike search, there are no rankings to check and no analytics behind the answer.

## What 3RD does

Most tools stop at a visibility score — a chart that trends up or down, and no clear next move. 3RD goes three steps:

<CardGroup cols={3}>
  <Card title="Track" icon="radar">
    Monitor how you show up across AI engines, every day — visibility, sentiment, position, and the sources behind every answer.
  </Card>

  <Card title="Diagnose" icon="stethoscope">
    Understand *why* the model chooses one brand over another — your content, your citations, the sources models actually trust.
  </Card>

  <Card title="Act" icon="bolt">
    Get a specific plan: which pages to fix, which sources to reach out to, what to write, and how to structure it.
  </Card>
</CardGroup>

## Five metrics tell the whole story

Instead of traditional search rankings, 3RD measures what actually matters in AI answers:

* **[Are you mentioned?](/metrics/visibility)** — *Visibility*: the share of AI answers that name your brand.
* **[Are you cited?](/metrics/citation-share)** — *Citation Share*: how often AI answers cite your own pages as sources.
* **[How are you described?](/metrics/sentiment)** — *Sentiment*: whether AI portrays you positively, neutrally, or negatively.
* **[Where do you appear?](/metrics/position)** — *Position*: where your mentions land within an answer compared to your competitors. Being number 1 often means you're the AI model's preferred choice.
* **[How do you compare?](/metrics/rank)** — *Rank*: your standing against tracked competitors, as "X of Y."

Filter any metric by **model**, **market** (a geography + language pairing, e.g. *Denmark – Danish*), **topic**, and **audience** to compare segments — US vs. UK, or awareness vs. purchase-intent prompts.

## How it works

<Steps>
  <Step title="You define the questions">
    3RD suggests prompts based on your topics — designed to reflect how real people actually use AI assistants, grounded in research covering hundreds of millions of users. Accept the good ones, add your own — "what's the best CRM for small teams?", "is Acme reliable?" — organized into topics and tiered by commercial value.
  </Step>

  <Step title="3RD runs them every day">
    Each prompt is sent across your selected AI models on a schedule. 3RD reads every answer — detecting where you're mentioned, how you're described, where you rank, and which sources the model cited.
  </Step>

  <Step title="You get a plan, not just a dashboard">
    Results roll up into your Overview and Leaderboard — but 3RD doesn't stop at the score. Diagnostics explains *why* you're not being chosen, and Playbooks turn that into concrete, prioritized deliverables: content briefs for the pages you're missing (with the exact queries to target), technical fixes for what's blocking AI from reading your site, and the specific third-party sources worth reaching out to — all tracked on a kanban board next to the visibility trend that proves whether it worked.
  </Step>
</Steps>

## Your first week with 3RD

* **Day 1** — Set up your brand, markets, competitors, topics, and first prompts. The [Quickstart](/quickstart) walks you through it; answers start streaming in immediately.
* **The first 24–48 hours** — Focus on patterns, not individual answers. AI models are probabilistic — the same prompt can get different answers on different days — so more answers means clearer patterns. As runs accumulate, your visibility, sentiment, position, and citation picture firms up.
* **By end of week** — You've run Diagnostics on your biggest gaps, created your first Playbook, and completed a few tasks that improve your visibility and preferability.

## Find your way around

<CardGroup cols={2}>
  <Card title="Quickstart" icon="rocket" href="/quickstart">
    From sign-up to your first insights in under 10 minutes.
  </Card>

  <Card title="Setting up your prompts" icon="message-question" href="/setup/prompts">
    Prompts are the foundation of everything 3RD tracks. Learn to write good ones.
  </Card>

  <Card title="Overview & Leaderboard" icon="chart-line" href="/results/overview-and-leaderboard">
    Read your dashboards with confidence.
  </Card>

  <Card title="Playbooks" icon="map" href="/actions/playbooks">
    Turn your visibility gaps into a prioritized plan of action.
  </Card>
</CardGroup>

<Tip>
  The single highest-leverage thing you can do is write prompts that mirror how real buyers talk to AI. Start with [Setting up your prompts](/setup/prompts) before anything else.
</Tip>