Project Mariner

Google DeepMind

Google's experimental browser agent: a Gemini that clicks the page you see — Operator's Chrome-native cousin, still a research preview with a waitlist.

Product preview

Overview

Mariner is Google putting Gemini's hand on the mouse inside Chrome: not a remote VM like Operator, a helper on the page you already have open. Claude Computer Use is the API; Operator is ChatGPT's remote desktop; Mariner is the Chrome experiment.

It will misclick. It is waitlisted. For Gemini shops that live in Chrome it is the preview to watch. For unattended checkout it is not ready. Same warning as Operator: watch the confirmations.

Pros / Cons

Pros

Acts on the Chrome tab you already have
Gemini computer use without a remote VM
Research preview of Google's agent bet
Same-page helper, not a second desktop

Cons

Waitlisted research preview
Will misclick like every computer-use demo
Not unattended production

Who it's for

Clicking through a page you already opened

Gemini shops trying computer use in Chrome

Form filling under a watching eye

Comparing Operator's VM to an in-tab agent

Bottom line

Gemini's hand on the Chrome mouse — a waitlisted preview, not a bot you leave overnight.

Key Features

Browser agent in Chrome

Clicks and types on the live page

Gemini-powered computer use

Research preview / waitlist

Google account gated

Compare Project Mariner with alternatives

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Frequently asked questions

What is Project Mariner?

Project Mariner is a Productivity tool developed by Google DeepMind. The company was founded in 2024 and is headquartered in Mountain View, USA. Google's experimental browser agent: a Gemini that clicks the page you see — Operator's Chrome-native cousin, still a research preview with a waitlist.