Pick Dia if
arc / The Browser Company users who want tab-aware chat and will pay for AI.
Read the Dia pageDia vs Perplexity Comet
Our take
Pick Dia if arc / The Browser Company users who want tab-aware chat and will pay for AI. Pick Perplexity Comet if people who already use Perplexity Search and want the same assistant inside the browser. Skip Dia if people who want a $0 AI browser (Perplexity Comet) or who refuse a second Chromium. Skip Perplexity Comet if teams that cannot leave Chrome, or users who only need cited search on the web app (Perplexity).
Best for
Dia A browser with tab-aware answers
Perplexity Comet Browse with Perplexity in the chrome
Free plan
Dia $0 · no AI. Profiles, tab groups, split-view, blocker, sync
Perplexity Comet $0 · free to download worldwide (Oct 2, 2025 launch post)
Lowest paid
Dia Better Answers $10/mo
Perplexity Comet Comet Plus $5/mo
Next step up
Dia Usage top-ups $20
Perplexity Comet Perplexity Pro $17/mo yearly
Watch out
Dia Free has no AI
Perplexity Comet Comet Plus is news access, not more assistant IQ
Last checked
Dia 2026-10-22 · diabrowser.com
Perplexity Comet 2026-10-22 · perplexity.ai/pro
Which one, then?
Pick Perplexity Comet if
people who already use Perplexity Search and want the same assistant inside the browser.
Read the Perplexity Comet page