Project Mariner vs Notion Agent
Project Mariner and Notion Agent are both Productivity tools in our directory. This side-by-side comparison covers pricing, user ratings, supported platforms, key features and open-source status so you can decide which one fits your needs.
Side-by-side comparison
| Attribute | Project Mariner | Notion Agent |
|---|---|---|
| Vendor | Google DeepMind | Notion |
| Rating | ★ 4.4 | ★ 4.5 |
| Pricing | Paid | Paid |
| Platforms | Web, Chrome | Web, Desktop, Mobile |
| Key features | Browser agent in Chrome, Clicks and types on the live page, Gemini-powered computer use | Multi-step agent over Notion pages, Database updates in place, Research plus write in the wiki |
| Headquarters | Mountain View, USA | San Francisco, USA |
| Founded | 2024 | 2025 |
| Open source | No | No |
Key differences
- Notion Agent has a higher user rating (4.5★ vs 4.4★).
- Both Project Mariner and Notion Agent use a Paid model.
- Project Mariner runs on Web, Chrome; Notion Agent runs on Web, Desktop, Mobile.
Frequently asked questions
Is Project Mariner or Notion Agent better?
By user rating, Notion Agent scores higher (4.5★ vs 4.4★). Both are capable Productivity tools, so review the feature comparison for your use case.
Which is cheaper, Project Mariner or Notion Agent?
Both Project Mariner and Notion Agent use a Paid pricing model.
Are Project Mariner and Notion Agent open source?
No — neither Project Mariner nor Notion Agent is open source.