# Compare VWO experiment variants

> Let the Kalman tag read VWO experiment variants so Funnel and Traffic can compare them by leads, purchases and approvals.

Updated 2026-11-10 · Analytics · https://kalmananalytics.com/support/vwo-experiments/

If you run A/B tests with VWO, Kalman can show how each variant performed on outcomes VWO never sees: leads, purchases and provider approvals.

## Turn it on

1. Go to **Integrations** and find the **VWO** card. It shows **off** until you turn it on.
2. Click **Turn on**. This opens **Integrations** → **Tracking**.
3. Under **Privacy settings**, check **Read VWO experiments**.
4. Click **Save privacy settings**.

You need to be an owner or admin. The VWO card then shows **reading**. The switch is off by default, and each site has its own setting.

## What the tag reads

With the switch on, the tag reads VWO's own first-party cookies on your site, and only for the experiment id and the variant number. It reads at most 10 experiments per visit. It reads no other cookie, page content or form field. Kalman checks the same rules again on its servers and stores variants only while the switch is on.

Each visit (session) keeps the first variant seen for each experiment.

## Use the Experiment panel

Open **Funnel** or **Traffic**. When visits in the chosen period carried a VWO experiment, an **Experiment** panel appears.

1. In the panel's list, pick an experiment (shown as **Experiment** followed by its VWO id).
2. Compare the variants by **Sessions**, **Leads**, **Purchases** and **Approvals**.

A visitor counts toward the first variant they saw. If no visits in the period carried an experiment, the panel doesn't appear. If the panel is missing after you turn the switch on, check that VWO is running on the pages your visitors reach, then widen the date range.

## What Kalman never sends

Nothing is sent to VWO. Kalman only reads VWO's experiment and variant ids. Your leads, purchases and approvals stay in Kalman.

Still stuck? Log in and open a request: https://app.kalmananalytics.com/support