[Launch options](https://cdpfleet.com/docs/options)

# `channel`

Release channel of the browser build.

**Use it for:** QA teams checking a site against the next browser release before users get it (beta, dev), and scrapers that want to see a change coming.

**Browsers:** [Google Chrome](https://cdpfleet.com/docs/browsers/chrome#opt-channel), [Microsoft Edge](https://cdpfleet.com/docs/browsers/edge#opt-channel), [Brave](https://cdpfleet.com/docs/browsers/brave#opt-channel), [Opera](https://cdpfleet.com/docs/browsers/opera#opt-channel), [Naver Whale](https://cdpfleet.com/docs/browsers/whale#opt-channel), [Yandex Browser](https://cdpfleet.com/docs/browsers/yandex#opt-channel).

## Details

-   **Type:** `"stable" | "beta" | "dev" | "developer"`
-   **Default:** stable
-   **Example:** `{"channel":"beta"}`

Omit it (or send `"stable"`) for the stable build, or pick a pre-release channel. The browser's page lists each channel's current version; a channel the browser doesn't have returns `400 invalid_channel` with its channels in `message`. Servers update on their own schedule, so the exact stable version can differ by one release between sessions.

Opera calls its dev channel `developer`. `browser.version()` reports the underlying Chromium version; for Brave, Opera, Whale and Yandex that differs from the product version listed here.

## Used in

-   [Case 3: Stable, beta, dev and an older major: four Chromes side by side](https://cdpfleet.com/docs/cases/chrome-versions)
-   [Google Chrome, beta channel](https://cdpfleet.com/docs/examples#chrome-beta)
-   [Microsoft Edge, beta channel](https://cdpfleet.com/docs/examples#edge-beta)
-   [Opera, developer channel](https://cdpfleet.com/docs/examples#opera-developer)

All options: [launch options](https://cdpfleet.com/docs/options).

---
Source: https://cdpfleet.com/docs/options/channel · Markdown: https://cdpfleet.com/docs/options/channel.md · All docs for AI tools: https://cdpfleet.com/llms.txt