perplexity comet alternatives beyond your browser

the short version

browser assistant versus a bot with a computer

plan access is as of 12 november 2026. downloading a free browser does not mean browser agent queries are included on the free plan. no browser speed or task-success test is included.

put the browser in the right place

comet is a chromium-based browser with a built-in assistant that can browse, research and act on pages.¹ it fits the question "can an assistant help where i am already browsing?" its docs say you can import from other browsers and use most chrome extensions.¹

dusk asks you to organise work around bots. on dusk cloud, each bot gets a desktop. a bot on your own server can have a private desktop there, and on a mac you can deliberately give a bot your own screen.⁶ that is useful when you want to separate the bot's work area from the browser you use yourself. see ai that controls a computer for that broader way of working.

free download and agent access are different

as of 12 november 2026, perplexity's plan help page says the free plan has no browser agent queries. pro and max have monthly limits.⁴ check perplexity's site for the current pro price.

dusk's free personal desktop use still involves whatever your ai provider charges. dusk cloud pays for a computer that stays on, with plus at $20/month and pro at $50/month; the ai bill remains separate.⁸⁹ compare the total arrangement you need, rather than the word "free" on either download. if you choose a signed-in ai for dusk, check the provider's current terms too.

page text can try to steer an agent

brave disclosed an indirect prompt-injection vulnerability in comet page summarisation on 20 august 2025 and reported it to perplexity.¹³ that is a dated disclosure, not evidence from a current exploit test. we haven't checked whether it's fixed.

when evaluating either tool, separate the material it reads from instructions you actually gave it. for dusk, you can watch the bot's screen, take control for sign-ins and stop it. sending in your name has its own approval setting. a bot on Full access with no sending rule of its own may send up to 25 a day without asking, so set full-access bots to Ask every time.⁶ none of this makes a bot immune to tricky page text. the computer-control safety guide explains what to think through before giving access.

try a research handoff with a clear stopping point

a bounded instruction to try is: "read these product pages and write a shortlist. keep a link beside every claim, separate missing information from confirmed facts, and stop before submitting forms." check the links and the shortlist yourself.

if you are also weighing the chatgpt option, openai has replaced chatgpt agent with chatgpt work; chatgpt agent alternatives covers that. browser assistants and desktop agents overlap, so choose based on the job and the access you want to give, not the category name.

how we checked

we make dusk bot. the comet column uses perplexity's own pages, read on 12 november 2026, and the safety note uses brave's dated disclosure. we did not run identical tasks, test browsing performance or retest the disclosed vulnerability. this is a comparison of working environments and documented access, not a current security certification for either product.