Dia

AI-native Chromium browser (from the makers of Arc) with AI chat built into every tab, not bolted on as a sidebar

What Dia does

  • AI-native Chromium browser (from the makers of Arc) with AI chat built into every tab, not bolted on as a sidebar
  • Free for light AI use; a Pro tier lifts the usage caps
  • Now backed by Atlassian after its 2026 acquisition of The Browser Company

Dia — straight answers

What is Dia?

Dia is listed under Browser Extensions & Copilots, in the AI Chat & Assistants category on Flocci AI Tools. AI-native Chromium browser (from the makers of Arc) with AI chat built into every tab, not bolted on as a sidebar. It is freemium — a usable free tier with paid plans above it, and it lives at diabrowser.com.

Is Dia free?

Dia is freemium: there is a free tier you can work in and paid plans above it. It is one of 391 freemium tools in the catalog, all labelled the same way so you are never surprised by a paywall.

What can Dia do?

Dia does 3 things the catalog singles out: Ai-native chromium browser (from the makers of arc) with ai chat built into every tab, not bolted on as a sidebar; free for light ai use; a pro tier lifts the usage caps; now backed by atlassian after its 2026 acquisition of the browser company.

What is the best free alternative to Dia?

Opera Browser AI (Aria) is the closest free alternative: it sits in the same Browser Extensions & Copilots sub-category and is free. Brave Leo, Harpa AI and MaxAI.me also start free. The full list is on the alternatives page.

See the full list →

Sider

Browser Extensions & Copilots
freemium
  • ChatGPT/Claude/Gemini in a browser sidebar
  • Summarize any page, PDF or YouTube video
  • Translate, rewrite and explain selections
  • Works across every website

Monica

Browser Extensions & Copilots
freemium
  • All-in-one AI copilot for the browser
  • Access to GPT, Claude & Gemini
  • Writing, translation and search tools
  • Desktop app and memo features

Merlin AI

Browser Extensions & Copilots
freemium
  • Works on any website
  • Summarize YouTube, articles and PDFs
  • Multiple frontier models in one place
  • Social-media reply generator

MaxAI.me

Browser Extensions & Copilots
freemium
  • One-click rewrite, reply and summarize
  • Chat with any page or image
  • Instant translation and grammar fixes
  • Prompt library built in

Harpa AI

Browser Extensions & Copilots
freemium
  • AI web automation and monitoring
  • Track prices and page changes
  • Scrape and summarize sites
  • Custom command workflows

Brave Leo

Browser Extensions & Copilots
freemium
  • Built directly into the Brave browser sidebar — no separate site, no account, no signup required for free tier
  • Access to Claude, Mixtral and Llama models without opening a separate chatbot site
  • Conversations never stored on Brave's servers and not used for model training

Head-to-head comparisons