OpenAI Operator vs Project Mariner
Two of the most-asked-about agents in the autonomous space. Here's how they actually stack up.
OpenAI Operator
OpenAI's autonomous browser agent for completing tasks on the web
From $200/mo
Read full review →Project Mariner
Google DeepMind's experimental browser agent for completing web tasks
From $20/mo
Read full review →Side-by-side comparison
| OpenAI Operator | Project Mariner | |
|---|---|---|
| Tagline | OpenAI's autonomous browser agent for completing tasks on the web | Google DeepMind's experimental browser agent for completing web tasks |
| Pricing | From $200/mo | From $20/mo |
| Categories | autonomous, browser-agent | autonomous, browser-agent, research |
| Made by | OpenAI | Google DeepMind |
| Launched | 2025-01 | 2024-12 |
| Platforms | Web | Chrome browser |
| Status | active | active |
OpenAI Operator highlights
- + Sandboxed virtual browser hosted by OpenAI
- + Human-in-the-loop takeover at any point during a task
- + Multi-step task planning and autonomous execution
- + Powered by GPT-5 with computer-use specialization
- + Saved tasks and memory across sessions
Project Mariner highlights
- + Chrome extension that takes over the active browser tab to complete multi-step tasks
- + Gemini 2.0 multimodal brain reads pixels, web elements, text, forms, and images simultaneously
- + Sandboxed execution: agent is limited to the currently active tab and cannot access other tabs or local files
- + Human-in-the-loop confirmation gates for sensitive actions such as purchases or form submissions
- + 83.5% score on the WebVoyager benchmark for end-to-end web task completion
Frequently Asked Questions
Which is better, OpenAI Operator or Project Mariner?
Neither is universally better. OpenAI Operator (From $200/mo) leans into autonomous, while Project Mariner (From $20/mo) is closer to autonomous. Pick based on which workflow you actually do every day.
What is the price difference between OpenAI Operator and Project Mariner?
OpenAI Operator is from $200/mo. Project Mariner is from $20/mo. See the pricing row in the comparison table.
Can I use OpenAI Operator and Project Mariner together?
In most cases, yes. They serve overlapping but distinct needs, so running them side by side is common until you decide which fits your workflow.