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# How to Measure Google-Extended

Google-Extended is a robots.txt token for Gemini training, not a second Googlebot. Measure Googlebot crawls separately and do not expect a Google-Extended ads pixel.

Source: https://usehardal.com/blog/how-to-measure-google-extended-traffic
Published: 2026-08-15
Updated: 2026-08-15
Author: Ecem Bircan
Category: Marketing

---

**Google-Extended** is the robots.txt product token Google uses so you can opt out of Gemini / generative-AI training **without** opting out of Search.

Google has been explicit that Search crawling stays on Googlebot, and AI Overviews and AI Mode still ride that search crawl. Blocking Google-Extended does not remove you from Search, and it does not create a "Gemini Ads" conversion API.

If your log dashboard has a line named Google-Extended, read it as "training-control token / related hits," not as a campaign. The crawl you already know how to measure is [Googlebot](https://usehardal.com/blog/how-to-measure-googlebot-traffic).

## What "measuring" it means

1. **Policy:** Is `User-agent: Google-Extended` present in robots.txt, with an explicit `Allow` or `Disallow`? Ambiguous blocks get ignored.
2. **Search crawl:** Googlebot volume and Coverage in Search Console, unchanged by the Extended token.
3. **Hardal:** [AI Visibility](https://usehardal.com/ai-visibility) lists Google-Extended among named agents so you do not dump it into a generic bot bucket. Use it to confirm the training opt-out is the one you intended.

Do not look for Google-Extended in GA4 acquisition. There is no pageview to find.

## robots.txt

Opt out of Gemini training, keep Search:

```
User-agent: Google-Extended
Disallow: /
```

Leave Googlebot allowed. Disallowing Googlebot does nothing about Gemini. It removes you from Search.

This is the rare clean split in the AI bot list. [GPTBot](https://usehardal.com/blog/how-to-measure-gptbot-traffic) vs [OAI-SearchBot](https://usehardal.com/blog/how-to-measure-oai-searchbot-traffic) is a similar idea at OpenAI. Google just happens to reuse Googlebot for search-shaped AI features, so the training switch is a token rather than a second spider you will see as often as GPTBot.

## What not to build

- A "Google-Extended Conversions API" guide. There isn't one.
- A ChatGPT Ads clone with the name swapped. Paid Google measurement is still gclid, Enhanced Conversions, offline imports, and server-side GA4 / Ads, which Hardal already treats as destinations, not as this token.

For ChatGPT paid media, start at [How to measure ChatGPT Ads](https://usehardal.com/blog/how-to-measure-chatgpt-ads).