Google Project Mariner vs Multion (2026)

Updated March 10, 2026

Overview

Rating

10.0 / 10

Rating

10.0 / 10

Best For

—

Best For

Developers and businesses who want AI agents that can navigate and complete tasks on any website

Product Summary

Google Project Mariner brings agentic browsing directly into Chrome, powered by Gemini. It can understand and interact with web pages — reading content, clicking buttons, filling forms, and navigating across sites. As a native Chrome feature for AI subscribers, Project Mariner represents the shift of browser agents from standalone tools to built-in browser capabilities, leveraging Google's unmatched understanding of web structure.

Product Summary

MultiOn builds AI agents that can autonomously use any website on behalf of users. Their browser agents can navigate complex web interfaces, fill out forms, complete purchases, manage accounts, and perform research across multiple websites. MultiOn provides both a consumer browser extension and an API for developers building web automation.

Starting Price

$249.99Per monthly

Starting Price

$0Per month

Free Trial

Yes

Free Version

Website

deepmind.google

Website

multion.ai

Key features

Core capabilities each platform advertises.

Google Project Mariner

Data not available

Multion

AI web browsing agent
Natural language task execution
Multi-tab browsing capability
Vision-based page understanding
API for automation

Strengths and tradeoffs

What each tool does well, and the limitations to keep in mind.

Google Project Mariner

Pros

Multimodal understanding allows parsing of text, images, buttons, forms, and code on web pages
Teach & Repeat feature enables learning custom workflows by demonstration
Can execute up to 10 parallel tasks for comparing prices or gathering data from multiple sources
Powered by Gemini 2.0, providing advanced AI capabilities and reasoning
Integration with Google's ecosystem provides access to additional tools and features

Cons

Premium pricing at $249.99/month is significantly higher than most consumer AI subscriptions
Currently limited to US users, though expanding to more countries
Still experimental with slow performance and prone to roadblocks like CAPTCHA or login issues
Cannot fill out credit card numbers, billing information, accept cookies, or sign terms of service
Requires significant computational resources with virtual machine architecture

Multion

Pros

Autonomous agents can complete complex online tasks independently
Significantly faster task execution compared to manual processes
Strong backing from Amazon Alexa Fund and prominent investors
Early mover advantage in the agentic AI space

Cons

Safety and privacy considerations require careful controls
Showcasing full capabilities remains a challenge for adoption
Relatively new technology with evolving use cases

Google Project or Multion — which should you choose?

Choose Google Project if you wantChoose if you want

Data not available

Choose Multion if you wantChoose if you want

Autonomous web task completion
Form filling and data entry
Web research automation
E-commerce automation
Multi-site workflow automation

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