Google closes Mariner Project and encourages the use of Gemini Agent

Google has closed Project Mariner its artificial intelligence agent for the browser, which was in the experimental phase, although the technology used in it has been incorporated into other company services.

The tech company shut down Mariner earlier this week, on Monday, May 4, and he announced this on his website with a thank you note to the people who had used it during its experimental phase, which was first picked up by Wired journalist Max Zeff.

NEW: Google quietly shut down Project Mariner yesterday, the web-browsing AI agent it highlighted onstage last year at Google IO.

I reported for WIRED, nearly 2 months ago, that Google had moved staffers off the Project Mariner team as it responded to OpenClaw-style agents. pic.twitter.com/WMBago74vr

— Max Zeff (@ZeffMax) May 6, 2026

Project Mariner, formerly known as Project Jarvis, appeared two years ago to offer artificial intelligence agents that help users perform complex taskswith the ability to understand and reason about the information that appears on the browser screen, be it text, code, images and forms.

When it was announced, it ran on Gemini 2.0 to take advantage of its improvements in multimodal, text, programming, video, and spatial understanding capabilities, as it had been designed specifically to power AI agents.

In its thank you note, Google reports that Mariner’s technology has been used in other company services and products, and urges those who use Gemini to perform complex tasks to contact Gemini Agentwhich is currently powered by Gemini 3.1 Pro.