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Which AI browser agent should I trust?

An AI that clicks and types in a browser to finish tasks. Last reviewed · Scored with the agent rubric

How to read this: scores are editorial estimates from public information and documented capabilities. We did not run these tools, so every score is labelled Docs-only. Prices are as reported and may be out of date.

Best pick Docs-only Agent

Perplexity Comet

78of 100

The best free route: Comet is free on Mac, Windows, iOS and Android. Paid tiers add deeper agent use.

Best for
Free browser-based research
Watch out
Check each action before it spends money or sends anything.
Price (as reported)
Reported: free; Pro and Max tiers add deeper agent features.
Links
Official site · Sources and details
Score breakdown
Task completion21/30
Useful autonomy13/15
Safety and approvals11/15
Cost predictability8/10
Setup effort9/10
Maturity and availability8/10
Integrations and reach8/10

Runners-up

#2 Docs-only Agent

Claude in Chrome

77of 100

Works inside your existing Chrome. Included with Claude plans at about $17 to $20/mo.

Best for
Existing Claude subscribers
Watch out
Needs a paid Claude plan.
Price (as reported)
Reported: included with Claude plans, about $17 to $20/mo.
Links
Official site · Sources and details
Score breakdown
Task completion22/30
Useful autonomy11/15
Safety and approvals13/15
Cost predictability8/10
Setup effort8/10
Maturity and availability8/10
Integrations and reach7/10
74of 100

Basic AI is free; autonomous Auto Browse needs Google AI Pro ($19.99/mo) and is US-only, per reports.

Best for
US Google AI Pro subscribers
Watch out
US-only and paid for the agent part.
Price (as reported)
Reported: Google AI Pro $19.99/mo for Auto Browse.
Links
Official site · Sources and details
US-only (reported)
Score breakdown
Task completion21/30
Useful autonomy11/15
Safety and approvals12/15
Cost predictability7/10
Setup effort8/10
Maturity and availability7/10
Integrations and reach8/10

Compared

#ToolScoreBest forEvidence
1Perplexity Comet78Free browser-based researchDocs-only
2Claude in Chrome77Existing Claude subscribersDocs-only
3Gemini in Chrome (Auto Browse)74US Google AI Pro subscribersDocs-only

Skip or no longer available

ChatGPT Atlas

Reported as retired; its agentic browser functions moved into ChatGPT's desktop browser and Chrome extension (per Fastio). We could not confirm this on OpenAI's own site. Source

Editor's note: AI browsers can be steered by hidden instructions on web pages (prompt injection). Do not give a browser agent access to accounts you cannot afford to have misused.

Sources