Chrome Extension | GEO Inspector for ChatGPT | Promptwatch
Track query fanouts directly in OpenAI ChatGPT with the free Promptwatch Chrome extension
See what ChatGPT actually searched: every fanout query, fetched vs cited sources, and the full reasoning trail. Free, 100% local, and works even when you're not signed in.
4.7/5 stars on G2
chatgpt.com
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Citations
6 of 12 sources cited
Gg2.com
Rreddit.com
Ccapterra.com
Hhubspot.com
Ttechcrunch.com
Updates
What's new in the Promptwatch GEO Inspector extension for ChatGPT.
v1.1.0 August 10, 2026
- Opens this changelog page when the extension is installed or updated, so you always see what changed
v1.0.0 August 4, 2026
- Fanout: every sub-query ChatGPT generated from your prompt, deduped, with site: and official badges
- Citations: the sources the answer actually cited, and how many were fetched but ignored
- Sources: every page ChatGPT fetched, grouped by host, marked cited or fetched-only
- Trail: the full reasoning trail from prompt to thinking, search, fetch, and answer
- Export captures as CSV, Markdown, or JSON
- Works signed in or anonymous — 100% local, nothing leaves your browser
Frequently Asked Questions
What does the Promptwatch Chrome extension do?
It's a free GEO inspector for ChatGPT. While you chat, it reveals what ChatGPT actually did behind the answer: every fanout query it searched, which web pages it fetched, which of those were actually cited, the model used, and the full reasoning trail from prompt to answer.
What is query fanout and why does it matter?
When ChatGPT searches the web, it doesn't run your prompt as-is — it fans it out into multiple rewritten search queries. Those queries decide which pages can even compete to be cited. The extension shows you every fanout query, including site: and official-source variants, so you know exactly what to rank for.
What's the difference between fetched and cited sources?
ChatGPT often fetches many more pages than it actually cites in its answer. The extension shows both: every source it retrieved, grouped by domain, and which ones made it into the final answer — including a 'X of Y sources cited' breakdown. That gap is where most GEO opportunities hide.
Is my data sent to Promptwatch servers?
No. Everything runs 100% locally in your browser. The extension makes no network requests of its own — it only reads the responses ChatGPT already sends to your browser tab. There's no telemetry, no analytics, and captures are kept in memory only; closing the tab discards them.
Do I need a Promptwatch account or a ChatGPT subscription?
Neither. The extension is completely standalone — no Promptwatch sign-up, no login. It works with any ChatGPT session, including free accounts, and even when you're not signed in to ChatGPT at all.
What permissions does the extension require?
The bare minimum: it requests no browser permissions at all, only access to chatgpt.com and chat.openai.com. It can't read other tabs, your browsing history, or any other website.
Does it work on Perplexity, Claude, or Gemini?
Not yet — the extension currently supports ChatGPT (chatgpt.com and chat.openai.com) only. To track your brand's visibility across ChatGPT, Claude, Gemini, Perplexity, and AI Overviews at scale, use the full Promptwatch platform.
Can I export or share what the extension captures?
Yes. You can download all fetched and cited sources as CSV, copy a formatted Markdown summary (great for sharing with your team or clients), or copy the full capture as JSON for deeper analysis.
How much does the extension cost?
It's completely free, with no usage limits, paywalls, or account requirements. It's our way of making AI search behavior transparent for everyone working on GEO.
Which browsers are supported?
The extension is built for Chrome using Manifest V3. Chromium-based browsers like Edge, Brave, and Arc that install from the Chrome Web Store generally work too, though Chrome is the officially supported browser.