Pick Dia if
arc / The Browser Company users who want tab-aware chat and will pay for AI.
Read the Dia pageDia vs Rill
Our take
Pick Dia if arc / The Browser Company users who want tab-aware chat and will pay for AI. Pick Rill if mac developers on Apple silicon (macOS 14+) who already pay Claude Code or Codex and will stay on Rill Free $0 while they send a first ⌘E task — not teams on Intel Macs, and not people hunting the rilldata BI repo. Skip Dia if people who want a $0 AI browser (Perplexity Comet) or who refuse a second Chromium.
Best for
Dia A browser with tab-aware answers
Rill Keep browsing while your coding agent works in the same window
Free plan
Dia $0 · no AI. Profiles, tab groups, split-view, blocker, sync
Rill $0 · ). “Runs on the Claude Code or Codex plan you already have.”
Lowest paid
Dia Better Answers $10/mo
Rill Not published by the vendor
Next step up
Dia Usage top-ups $20
Rill
Coding agent
Dia
Rill Claude Code
Watch out
Dia Free has no AI
Rill Mac-only, Apple silicon, macOS 14+
Last checked
Dia 2026-10-22 · diabrowser.com
Rill 2026-10-23 · rill.love
Which one, then?
Pick Rill if
mac developers on Apple silicon (macOS 14+) who already pay Claude Code or Codex and will stay on Rill Free $0 while they send a first ⌘E task — not teams on Intel Macs, and not people hunting the rilldata BI repo.
Read the Rill page