Project Mariner vs Browserbase
A side-by-side look at scores, pricing and features — with RECATOOLS' ASEAN-aware verdict for each.
Project Mariner
Google DeepMind's browser-agent prototype, shut down 4 May 2026
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Browserbase
Cloud browsers, web APIs and agent tooling for AI agents
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| RECATOOLS Score | 4.2 / 10 | 7.6 / 10 |
| Capability | ||
| Value for money | ||
| Ease of use | ||
| ASEAN readiness | ||
| API quality | ||
| Pricing | Subscription | Freemium |
| Free tier | None. The service ended on 4 May 2026; early access was an invite-only tester programme | Free plan: 3 concurrent browsers, 1 browser hour, 3 agent runs, 1,000 search and 1,000 fetch calls and $5 of model tokens |
| Paid from | Discontinued, last sold within Google AI Ultra at $249.99/mo (US, 2025) | $20/month (Developer, 100 browser hours, then $0.12/hour); Startup $99/month |
| Has API | ✗ | ✓ |
| Open source | ✗ | ✗ |
| Free to use | ✗ | ✓ |
| Users | — | — |
| Founded | 2024 | 2024 |
| Maker | Google DeepMind (Alphabet) | — |
| Verdict | Project Mariner was Google DeepMind's research prototype for an agent that drives a web browser, and Google shut it down on 4 May 2026. There is nothing left to sign up for: the Labs page carries only a notice pointing t... |
Browserbase takes a genuinely painful job, running and unblocking browser fleets for agents, and turns it into an API with good debugging: live view, session replay and logs. Stagehand, its MIT-licensed framework, is act... |
| Full review → | Full review → |
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Comparisons cover up to 4 tools. Scores are RECATOOLS editorial assessments; verify current pricing on each vendor's site.