Project Mariner vs Grain
Project Mariner and Grain 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 | Grain |
|---|---|---|
| Vendor | Google DeepMind | Grain |
| Rating | ★ 4.4 | ★ 4.5 |
| Pricing | Paid | Freemium |
| Platforms | Web, Chrome | Web, Zoom, Meet, Teams |
| Key features | Browser agent in Chrome, Clicks and types on the live page, Gemini-powered computer use | Recorded meetings to shareable clips, AI titles on the moments, CRM notes from the call |
| Headquarters | Mountain View, USA | Indianapolis, USA |
| Founded | 2024 | 2018 |
| Open source | No | No |
Key differences
- Grain has a higher user rating (4.5★ vs 4.4★).
- Project Mariner is Paid, while Grain is Freemium.
- Project Mariner runs on Web, Chrome; Grain runs on Web, Zoom, Meet, Teams.
Frequently asked questions
Is Project Mariner or Grain better?
By user rating, Grain 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 Grain?
Project Mariner is Paid and Grain is Freemium. Check each product page for current plan details.
Are Project Mariner and Grain open source?
No — neither Project Mariner nor Grain is open source.