# Turn on automatic testing

Experiments → Settings: turn on automatic testing, choose whether Darwin starts new tests or leaves them to you or your AI assistant, choose whether winners apply themselves, run a check now, set test limits, pick pages tested on their own and leave out your own visits.

This is the Markdown version of https://www.meetdarwin.ai/help/experiments/automatic-testing, published by Darwin and generated on 23 October 2026.

Find it in Darwin: Experiments → Settings (https://app.meetdarwin.ai/admin/experiments/settings). Updated Oct 16, 2026.

With automatic testing on, Darwin checks your tests, starts new ones and applies winners without you lifting a finger.

_Screenshot: Experiments Settings in a demonstration workspace, with automatic testing switches, Last check and the traffic and concurrent-test limits._

1. **Turn on automatic testing**

   In **Experiments → Settings**, switch on **Run tests automatically**. You can also use **Automatic testing** on the main Experiments lists. The switch saves as soon as you flip it. Only owners and admins can change testing settings.

2. **Check that it's running**

   The badge next to **Run tests automatically** shows where things stand: **On** or **Checking** when it's working, **Starting** before the first check, and **Off** when it's switched off. **Needs attention**, **Retrying** or **Not connected** mean checks aren't getting through; your current openings stay in place, and you can contact support.

3. **Choose who starts new tests**

   With **Darwin starts new tests** on, Darwin writes new openings and starts tests on its own. Turn it off to start every test yourself, in Experiments or with your own AI assistant or code: Darwin still shows and scores every test, and still applies winners if **Apply winners for me** is on. See [Run opening tests with your own AI assistant](https://docs.meetdarwin.ai/api-reference/recipes#run-opening-tests-with-your-own-ai-assistant).

4. **Choose how winners go live**

   With **Apply winners for me** on, a winning opening goes live on its pages straight away. Turn it off to approve each winner yourself; Darwin keeps testing, and winners wait for you in **History → Needs review**.

5. **Decide whether to learn from other Darwin sites**

   **Learn from other Darwin sites** starts your new tests from the kinds of openings that did best on similar pages. Only anonymous counts are shared. Turning it off asks you to confirm, and removes your counts.

6. **Run a check now**

   **Last check** shows when Darwin last went through your tests and when it looks next. Darwin checks every few hours, and at least once a day. Select **Check now** to check results and start eligible tests straight away.

7. **Set the limits**

   **Views before a page gets its own test** is how many opening views a page needs in 28 days to be tested alone (at least 10). Quieter pages share a test. **Tests running at once** caps how many tests run together (up to 20); the busiest pages start first. Use **−** and **+**, or type a number, then select **Save changes** in the floating bar.

8. **Test an important page on its own**

   **Pages tested on their own** lists pages that always get their own test, whatever their traffic. Select **Choose a page to test** to pick one from your pages.

9. **Leave out your own visits**

   Your own clicks would teach a test the wrong lesson. Under **Your own visits**, open the **Mark a browser as yours** link once in each browser you and your team use. For an office with a fixed internet address, select **Add my current address** or type an address and select **Add**.

## Good to know

- Turning automatic testing off stops new checks. Tests already running keep collecting data; pause one from its page.
- **Check now** works even when automatic testing is off.
- Keep **Run tests automatically** on when your own assistant runs the tests: it is what scores them. Switch off **Darwin starts new tests** instead.
- Waiting is normal. A quiet page can go many checks without a result.
- New workspaces start with **Apply winners for me** and **Learn from other Darwin sites** on, 200 views before a page gets its own test, and 6 tests at once.

- [See what each page is showing](https://www.meetdarwin.ai/help/experiments/page-openings): Find a page and start a test on it.
- [Experiments aren't running](https://www.meetdarwin.ai/help/fix-a-problem/experiments-not-moving): What to check when no test starts.