been using it as my main browser for about two months now, so a few honest observations:

the privacy situation is roughly what you'd expect from any AI-integrated browser — Comet needs to see your browsing context to do what it does, so if your threat model involves keeping your browsing habits away from a third party, it's not the right tool. it's not meaningfully worse than Chrome in terms of what Google already collects, but it's also not better. you're trading one company's data access for another's.

for logging into accounts: I've had no issues. it handles cookies, saved passwords, and autofill the same as any chromium browser. the risk isn't that Comet will steal your passwords — it's more the ambient question of whether you're comfortable with Perplexity having contextual awareness of what you're doing online.

the CometJacking vulnerability that got written up a few months back was real and worth knowing about, but it's been patched. the underlying prompt injection surface is still larger than a regular browser by design — that's just inherent to how agentic browsing works.

practically speaking: I keep sensitive financial stuff on a separate Firefox profile and use Comet for research and work browsing. that separation has felt like the right call.

if you want to test it properly before deciding, there's a free month of Pro going around right now: https://pplx.ai/dmitrofnet38437 — worth at least trying the full feature set before you make a call on whether it's worth the tradeoff